TW200824182A - Discontinuous transmission line structure - Google Patents

Abstract

A discontinuous transmission line structure includes an input transmission line, an output transmission line, a plurality of meandered inductors, coupled in series between the input transmission line and the output transmission line, and a plurality of shunted to grounded capacitors, coupled between the meandered inductors. The discontinuous transmission line structure has a high inductance and a high capacitance, and can effectively reduce the size by increasing the transmission line load impedance and capacitance while the characteristic impedance of the transmission line structure remains.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discontinuous transmission line structure, and more particularly to a discontinuous transmission line structure having alternating high inductance and high capacitance elements. [Prior Art] With the popularity of mobile communications, in order to properly communicate with mobile users, phased array antennas with beam scanning are more important. Similarly, in the Radio Frequency Identification RFID system, both the private storage system and the cargo inspection application on the conveyor belt can use the phase array antenna reader with beam scanning to enhance RF][D reading The working performance of the device. The Butler Matrix control circuit is applied to the phase array antenna, which can be used to accurately control the input signal size and phase to achieve a phase array antenna with beam seedlings. Therefore, the Butier Matrix is used in the system to improve its performance. w

The Butler Matrix phase array antenna control circuit includes a 3-dB branch line coupler, a 〇_dB crossover line (〇dB w〇ss〇Ver), and a transmission line for phase adjustment. The coupler has the functions of phase control and power distribution, so it is widely used in the design of chain wave circuits and is a key component of the Butler Matrix circuit. ^ The Butler Matrix phase array antenna control circuit is applied to the Rfid system. Since the RFID system operates at 900MHz, there is a disadvantage that the circuit area is too large. Therefore, the technology of the discontinuous transmission line structure can be used to reduce the electrical area =. According to the transmission line theory, the characteristic impedance, degree and guided wave wavelength of the lossless transmission line are 遂Z〇-/~(L/C) 5 200824182 W(LC) λ, /fc is the characteristic impedance of the transmission '[ is the unit of transmission line Length inductance value, phase velocity, f Α early bit length private valley value, % is the frequency of the electromagnetic wave of the electromagnetic wave on the transmission line in the transmission line 'λ is the guided wave wavelength of the electromagnetic wave. When the phase velocity will be increased, the component impedance of the component will increase, and the wavelength of the waveguide will be reduced. The ratio of the inductance and the capacitance of the electric transmission line can be increased, 100, 1 and ^~ 辞--the silk technique* continuous transmission line structure X, Chazen, two 5-way inductive components and high-capacitance components Interactive combination. This 120, ί = junction f _ consists of the input transmission line UG, the output transmission line, the element-from the inductance element L and a plurality of capacitive elements (such as Ci and c2), the part is made of metal on the substrate 101 Formed by the board, a plurality of electric PW-L series are connected in series between the input transmission line 110 and the output transmission line 12〇, and a pair of parallel grounded capacitive elements (such as ^ and Cy, and the pair of capacitive elements are connected to the inductor) Both sides of the component 1. The inductor element L is connected in series to the input transmission line 11〇 and the output transmission in a discontinuous manner, and the line length 120 can be combined with the unit length inductance value of the south transmission line structure 1 (10), and the capacitance elements are connected in parallel. The unit length capacitance value of the discontinuous transmission line structure 1〇〇 can be increased between the input transmission line 11〇 and the output transmission line 120. The inductance element and the capacitance element are alternately connected in series between the input transmission line Π0 and the output transmission line 120. If applied to a 900MHz RFID system, it has a 90 degree phase shift transmission line and must be 3〇.8mmx4mm. In a 4x4 Butler Matrix phase array antenna control circuit, it must be 20082 4182 The structure of the continuous transmission line of the crying line is said to be the crossover line of the branch line coupler and the two K 45 ^ degree transmission lines. Therefore, at least 34 sections and discontinuous transmission lines with phase shift of 90 degrees or 45 degrees are required. The size of the structure is too large, Jiang Bei, gave birth to R 苒 enemy right, this is not too large to transmit the volume of the transmission, to the easy two = ix phase array antenna consumption. ^ Qin not used in the women's clothing, and caused additional damage yuan: ί发力力不不均概^ Reduce the circuit size k under 'effectively reduce the phase speed for the purpose of the invention】 [Abstract] The need to provide a discontinuous transmission line structure, which has: 偻钤 值 value and high unit length capacitance value, It can effectively reduce the size by increasing the 'value and capacitance value' and can keep it from being transported, and the characteristic impedance of the other transmission line structure is unchanged. The human soil system provides a discontinuous transmission line structure, which encapsulates the transmission line; a curved inductive component, a parallel grounded capacitive component::=between the transmission lines; and a plurality of given characteristic impedances providing a discontinuous transmission line structure to include: an input signal via a delay. The discontinuous transmission line Constructing the discontinuous observation includes a transmission-acquisition-output signal, and an inductor-capacitor combination circuit, an input transmission line, an output transmission line, and a transmission circuit between the transmission line and the output transmission unit. A plurality of curved inductors 7 200824182 components, and a plurality of parallel grounded capacitors, _ between the inductive components of the f-curves, wherein the phase is determined by the inductive components of the f-curves and the parallel grounded capacitors. /Life and death, the continuous transmission line structure 'because of having multiple curved electric salt components and a sub-connected ground capacitance', therefore, this is not ^

By increasing the transmission line load inductance value and the capacitance value, the characteristic impedance of the discontinuous transmission line structure can be kept constant. change,

The non-continuous transmission line structure has a characteristic resistance value of a change in the recording size at a small size so that a high frequency noise signal of a wide frequency range can be suppressed. The above and other objects, features, and advantages of the present invention will become more apparent and understood. [Embodiment] FIG. 2A is an equivalent circuit diagram showing a discontinuous structure according to a first embodiment of the present invention. The continuous transmission line structure includes an inductor-capacitor combination circuit including a plurality of inductance elements ^, ^, L3, L4, L5, and a plurality of parallel ground capacitance elements Cpu, Cpi2, c_,

Cp3i, Cp32, Cp4h cp42. A plurality of inductance elements L1, L2, L3 are connected in series between the input terminal vIN and the output terminal v〇ut. A pair of parallel grounding capacitors 5 components Cpll and Cpu are connected between the two inductive components ^ and ". Similarly, a pair of grounding capacitive components Wu Cp22 are connected between the inductors = L2 and L3, and the turtle sensing elements Ls and L4 A pair of grounded capacitive components Cpsi and CP32 are connected; a pair of grounded capacitive components cp4^cp42 are connected between the inductive components L4 and Ls. Parallel grounded capacitive components Cpn, Cpi2, Cp2i, Cp22, c_, CP32, Cp41, Cp42 The end is connected to the corresponding inductive component Li, L l5, and the other end is grounded. 8 200824182 Ink, Fig. 2B, according to the first embodiment of the present invention, the discontinuous transmission line structure is designed according to the equivalent circuit diagram according to the figure. 2〇〇. On a substrate ^ with a metal plate to form the inductance element Μ, h, L4, ^ and electricity

CplU Cpl2'Cp2b Cp22'Cp3h cp325 cp41? Cp42 ° ^ Line structure · including input transfer line 21 (), output transmission line 22 〇, electric Ll, kL, L4, L5 connected in series to the input transmission line 210 and the wheel ΪΪ 'Ϊ 220 between. Each of the inductance elements L1, L2, L3, L4, and L5 is tied to the bow 1, and is therefore referred to as an inductive element. A symmetric connection between each two inductive components - a pair of parallel grounded capacitive components, each pair of parallel grounded capacitive components = 金属 is a metal plate. According to the specific embodiment of the present invention, the input transmission wheel 1 〇 /, the output transmission line 220 is a microstrip line (4) (10) system, the inductance element ^^1'1^, 1^, 1^4, 1^5 is utilized The curved metal wire is composed, so 1 cpll, cpl2, cp21, cp22vcP3; P32, P41, CP42 are made up of a large area of metal plate, the capacitive element pi = P12, Cpn' CP22, CpM, CP32, Cpw , the metal of CP42 ^ = the curved metal wire of Li, L2, L3, L4, L5, and the other electrode plate of the substrate 2〇1 : ' as the capacitor element to improve the capacitance element 2 in the reverse 2〇1 The other side covers the grounded metal plate to form the ground end of the substrate 201. According to the invention, according to the first embodiment, the metal structure of the f-curve is used: "the larger inductance value is obtained, and the area of the discontinuous transmission of the large-area electrode plate is mixed." The second embodiment of the present invention includes the inductive capacitance combination 200824182, the c-inductance c element Li, L2, L3, L4, l is grounded pl" p21? Cp22>Cp3i> Cp3-cp-° ^ VIN is connected in series with the wheel-out terminal vGUT with multiple inductance elements L1, L2, t: L5, two cuckoos, two: sensing element Ll* L2 connection-to-parallel grounding ° Similarly, the capacitive element Cp21 is connected between the inductive component Μ L3 and the inductive component ^

: Vt is connected to the capacitive elements Cp31 and CP32; and a pair of parallel grounded capacitive elements c c 42 are connected between the inductors L4 and L5. , the ground, the ground, the components Cpll, Cpl2, Cp2i, Cp22, the CP42 is connected to the corresponding inductive component Li, l2, ", u, and the other end is grounded. According to the second embodiment of the present invention, the inductor The capacitor combination circuit further includes a series capacitor element Cgl, Cg2, Cg3, Cg4, Cg5, Cg6. On both sides of the inductor TO piece L2, a pair of series capacitor elements cgi and Cf are symmetrically connected and a parallel circuit is formed with the inductance element L2. This structure has the effect of low-pass chopping f, and the series capacitive elements Cgl and Cg2 can provide a rejection with L2 (^&11(1) transmission zero point (dense 111^〇112^〇) for The frequency selectivity of the circuit is improved, and the excellent frequency selectivity can further suppress the passage of the high frequency noise signal. Similarly, the inductance element is connected in parallel to the series capacitor elements Cg3 and Cg4, and the viewing element L4 is connected in parallel. For series capacitor elements Cg5 and Cg6. Referring to FIG. 3B, a practical design diagram of the discontinuous transmission line structure 300 is shown in accordance with a second embodiment of the present invention. Similar to the second embodiment of the present invention, the second embodiment Example on the substrate 3〇1 The input transmission line 310, the wheel transmission line 320, the curved series inductance elements L, L2, h, U, Ls and the parallel ground capacitance elements Cpll, C=2, 200824182 c p21 are formed by metal plates.

Cp22, Cp3i, Cp32, Cp41, Cp42. In the second embodiment, each pair of parallel grounded capacitive elements Cp11, CpI2, Cp2i, CPU, Cp3i, CP32, Cpw, CP42 has a 'T shape, a plurality of curved elements L2] L3, L4 Between a plurality of "turns". In more detail, each of the series inductance elements L2, L3, L4 is disposed between two "I" shapes. Thus, the parallel ground capacitance trees Cpll, Cpl2, &&, Cp3i, I, Cangzhou, Cp42, the capacitance value, combined with the series inductance of the curved line, IS reduces the phase velocity 'and reduces the discontinuous transmission line structure circuit 3 f ground capacitance Cgl, Cg2, Cg3' Cg4, Cg5, ^ is formed by substrate 301 f. In the actual process, 'series grounding capacitors Cgl, rg2, g4; Cg5, Cg6 can be connected by adjacent parallel grounded capacitive elements Cpl 1, J 亓iTr 2, Cp31, Cp32, Cp41, Cp42 are lightly combined. For example, the metal plates of pU /, Cp21 form two series capacitors ci = 牛 = 301 and air together as the 'electrode, the electric component pc31's H" is tandem capacitor ploughing Q two of the two Cg5 electrodes, electric J1 yuan, 31 f is the wire wire • the coupling capacitor element The two plates of the component cg2, the metal plate of the cP22 becomes a metal plate of the metal plate of the tandem capacitor element cj and the Cp22 and Cp32 in series, and the capacitor plate c and the C(10) capacitor Cgl, Cg2 , C3, CC 仵Cg6 two electrodes. These series electric boosting circuits 8 frequency/selection can provide a reject band transmission zero point, which contributes to the parallel grounding capacitor element.

Cp32 > Cp41 . CP^ CP- ' ' CP31 ' The combination of the above methods, because ~e ^ L1, L2, L3, L4, L5 according to the degree, reduce the discontinuous transfer line structure can reduce the phase velocity 200824182 G3; FIG. 4A is an equivalent circuit diagram showing a discontinuous transmission line structure according to a third embodiment of the present invention. The circuit diagram is the same as the equivalent circuit diagram of the second embodiment, but in FIG. 4B, An actual operational leaf diagram of the discontinuous transmission line structure 4A of the third embodiment of the present invention is shown. Compared with the second embodiment, in the third embodiment, the two ends of the parallel-shaped parallel grounding capacitor are formed by the finger insertion shown in FIG. 4B. The input transmission line 41 is formed on the substrate 401 by a metal plate. 〇, turn-out transmission line 4 plus a plurality of curved series inductance elements, parallel ground capacitance elements C nc cP2i, cp22, cp31, cp32, cp41, cp42 and series capacitance elements ccc ' Cg4, Cg5, Cg6, wherein the inductance elements, parallel Grounding capacitive element ^ I! ^ Cp21, Cp22, Cp3i, Cp32, CP41, Cp42 and series capacitive element. c Q Cg4, Cg5, Cg0 are the same as the previous embodiment. Compared with the second embodiment, In the third embodiment, the two ends of the two adjacent 'T' shapes are connected by a finger insertion as shown in FIG. 4A. The finger insertion forms a series capacitor element cgl, cg2, Cg3, Cg4. , Cg5, Cg6, interlaced with each other to increase the electrode plate area of the capacitor element, thereby increasing the electric six value of the series capacitor element. This design can improve the circuit with a rejection and enable, and also contributes a little to parallel=capacitance. Please read 5A, which is based on the fourth embodiment of the present invention. For example, the equivalent transmission diagram of the transmission line structure. The fourth embodiment of the continuous transmission line structure comprises an inductor-capacitor combination circuit comprising a plurality of Thai sensing elements 1^1, 1^2, 丄3, parallel grounded capacitive elements (;: c ^ ,, ^ electric valley piece '^" between the input end and the wheel end, "the evening feel 7L pieces L!, L2, L3 'in two inductance elements Li and L = parallel - Similarly, a pair of grounded capacitive elements Cpll# Cpl2; in parallel, a pair of grounded capacitive elements Cp2々c are connected in parallel with each other. Each & and ^ 12 200824182 pieces l丨儿Γ凡Γ 3 'Jp: 2, Cp21, One end of Cp22 is connected to the corresponding inductor element embodiment, and the third element L = is grounded; the fourth concrete side of the invention is symmetrically connected with a pair of series capacitor elements (/: g2 mountain', external capacitor element~ Connect the capacitive component CPU disk end and sub-connected to the inductance component l2, the series capacitance component C: the car coupling Cp22 has one end connected in parallel to the inductance component 1:, and the string supply carrier ^ gV, 'the resonance formed by the inductance component L2 The device can increase the circuit frequency selectivity. X, refer to Figure SB' is the fourth device according to the present invention. In the embodiment, the actual design of the transmission line structure 500 is shown; ^ =; the combination of the third embodiment. The transmission line 51 is wheeled in the substrate, the transmission line 52 is rotated, and the series inductances 1, L2, L3 are bent. Parallel grounding capacitive components Cpll, cpl2, Cp21: 联. 2 two Tif burial grounding capacitive components - side refers to the insertion to form a series 电 P electrical components CP " and Cp2i metal plate becomes a series capacitor element of the electrode, and The metal plate in which the substrate 501 and the air are collectively referred to as two +L pl2# Cp22 serves as a series capacitor element (: (2). The fourth embodiment of the present invention is similar to the third embodiment of the present invention, the fourth embodiment of the present invention, the inductance elements L1, L2 are "three curved" metal wires, and each of the three embodiments is increased compared to the third embodiment.佶, the tortuosity of lit' effectively increases the inductance of each inductive component. The area of the metal plate of the large-scale electric grid component is increased to increase the value of the capacitive component by the value of the discontinuous transmission line structure and the capacitance value. Reduce the size of the discontinuous transmission line structure. Door operation Please refer to Fig. 6, which is a (four) circuit diagram of the discontinuous transmission of the fifth embodiment of the present invention. In the fifth (four) implementation, the discontinuous transmission line structure includes two inductor-capacitor combination circuits 'which include a plurality of curved inductor elements Li, L2, 3, and a parallel grounded capacitance element Cpi, Cp2, Cp3, cp4, cp5, cp6 : cp7, cp8, c", Ci2, c", and series capacitor cvc2. The inductive components Li, L2, L3 are connected in series between the wheel terminal and the input (four) of the discontinuous transmission line structure. The two ends are respectively connected to the *Asian _ two pairs of parallel grounded capacitive components Cp wide cp3, Cp5, Cp7 and Cp2, cp4, cp6, c series capacitors. Between the parallel grounding capacitors Cpl, cp2, the series capacitor is = Ϊ = ρ34ρ4 = 'and the coupling capacitors Ci, C2 are read parallel to the curved inductor L2, and are placed, and are formed by the finger insertion ends of the sub-coupling capacitive elements. Parallel ground capacitance elements C:, C:, C 7P and cp4 〇 Cpi c;2. c;3. Cp;; one end of P5, CP6, CP7 and cp8 is coupled to the curved inductive component L2, and to the ground end. The curved inductor element is bent to represent the parasitic capacitance value. :卩诙也电谷c", c!2, Cu, CH. Parallel grounding capacitor / 2, 7, and Cp8 are small Parallel plate capacitors, which are parallel to the sub-coupling capacitors Cpl, cp2, cp3, and Cp4. No, the vehicle implementation is a type of discontinuous transmission line structure. This ϊΐ: ϊ ϊ ϊϊ 包含 contains multiple Lc circuits, each LC circuit has The valley value makes the signal pass through the discontinuous transmission line, and the phase delay of the signal can be determined by adjusting the number of combinations of the LC circuit (4). The phase delay of the signal. Discontinuous transmission line structure, can be used for private, feedback lines, unbalanced to balanced conversion lines, special 14 200824182 别 ^ 电路 电路 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要 要The high frequency is dilute to reduce the size of the component. The curved inductive component disclosed in the specific embodiment may be a zigzag line & read component 'inductive component of each segment of the segment includes, the present invention has been disclosed above, However, it is possible to make some changes and refinements without departing from the spirit of the present invention. Therefore, the accompanying application of the present invention is dependent on the application. y'° [Simple description] Πίίΐίί芑 'and 'the more twists and turns' The zigzag line segment gets higher ^ capacitance value south (four) sense value. The metal (four) area can be increased as shown in Figure 1. According to the prior art, a discontinuous transmission line design is shown. Actual FIG. 2A of the structure is an equivalent circuit diagram of a transmission line structure according to a first embodiment of the present invention. 1§, discontinuous diagram 2B is the first according to the present invention. DETAILED DESCRIPTION OF THE INVENTION The actual design of the discontinuous transmission line structure is shown. 3A is an equivalent circuit diagram showing the structure of the discontinuous transmission line in accordance with the second embodiment of the present invention. *, 、, 巧图 According to a second embodiment of the present invention, li shows the actual design of the discontinuous transmission line structure. m. Fig. 4A shows an equivalent circuit diagram of a discontinuous transmission line structure in accordance with a third embodiment of the present invention. Figure 4B is a diagram showing the actual design of a discontinuous transmission line structure in accordance with a third embodiment of the present invention. #,, 15 152424182 Figure 5A is an equivalent circuit diagram showing the structure of a discontinuous transmission line in accordance with a fourth embodiment of the present invention. Figure 5B is a diagram showing the actual design of a discontinuous transmission line structure in accordance with a fourth embodiment of the present invention. Figure 6 is an equivalent circuit diagram showing the structure of a discontinuous transmission line in accordance with a fifth embodiment of the present invention. [Main component symbol description] L!, L2, L3, L4, L5: Bent inductive components

Cpil, Cpi2, Cp2i, Cp22, Cp31, Cp32, Cp4i, Cp42, Cpi, Cp2

Cp3, Cp4, Cp5, Cp6, Cp7, Cp8: Parallel grounding capacitors Cgi, Cg2, Cg3, Cg4, Cg5, Cg6, Cj, C2: series capacitor Vin: input terminal Vout: output terminals 200, 300, 400, 500: no Continuous transmission line structure 201, 3 (U, 401, 501: substrate 210, 310, 410, 510: input transmission line 220, 320, 420, 520: output transmission line 16

Claims (1)

200824182 X. Patent application scope: 1. A discontinuous transmission line structure, comprising: an input transmission line; an output transmission line; 70 pieces of inductance of the evening circuit, (4) minus between the input transmission line and the output transmission line; And the grounding electrical components of the ear, Momax is connected between the curved inductive components. The discontinuous transmission line described in 2·ί月, further comprises an inductance of a plurality of series capacitors, the parallel groundings, and parallel to the curved continuous transmission line structures, wherein - the grounding of the parallel grounds The two sides of the curved inductive component, each of which is connected in parallel:: the surface is connected to the i-connected = to the curved, inductive component, which is - 'material mode, 纟__ ground transmission line structure, where For the parallel grounding power 7:=5, the two structures further comprise a plurality of series electrical components, wherein the plurality of series electrical components are connected in parallel with the curved inductors. ~ Strings such as electric valleys are formed by two adjacent turns, and the two corresponding ends of the shape are shaped as inserts. 15 contiguous transmission line structure, wherein the "I"-shaped end is between the valleys and is sub-connected to the curved inductor elements 17 200824182, wherein the series capacitors are inserted by two adjacent fingers The end is formed. The discontinuous transmission line structure of claim 1, further comprising: a substrate for placing the input transmission line, the output transmission line, the curved inductive component and the parallel grounded capacitive component; and a grounding plate disposed on Below the substrate. 11. A discontinuous transmission line structure having a phase delay function, an input signal sharply obtaining an output signal via the discontinuous transmission line, the discontinuous transmission line comprising An input transmission line; an output transmission line; and an inductor-capacitor combination circuit connected between the input transmission line and the output transmission line, wherein the inductor-capacitor combination circuit comprises a plurality of curved inductance elements and a plurality of parallel ground capacitances coupled Between the curved inductive components, wherein 'the phase delay is determined by the curved inductive components and the parallel grounded capacitors. The discontinuous transmission line structure described in claim 11 further includes a plurality of series grid elements coupled between the parallel ground capacitance elements and connected in parallel to the curved inductance elements. 13. The discontinuous transmission line structure according to Item 11, wherein a pair of the coupling capacitor elements are located in the (fourth) t-sensing element, and each of the plurality of grounding capacitance elements is One of the curved inductive components, the other end is coupled to the ground. The discontinuous transmission line structure of 14f, wherein the appearance of the spliced grid element is a flat plate. ^ The discontinuous transmission structure described in the above, wherein the appearance of the pair of parallel grounded turtles is "I,". The discontinuous transmission line structure described in Yuedong 15 is the curved electric 18 200824182 The sensing element is located between the "i" shapes. 17. The discontinuous capacitance described in claim 15 is connected to the parallel configuration of the parallel grounding electrical J: further comprising a plurality of series electrical inductive components, wherein The series capacitors are formed by two (four). The two corresponding ends of the 1 shape of the ^ are discontinuously spread as indicated by the request item! 5, and the end of the singularity is more than one. Two corresponding finger insertions electrically connected in series to the electric curvature of the plurality of ridges 19. The discontinuous transmission line structure of claim 18, each coupled between the parallel grounded capacitors and the parallel coupling element, wherein the series capacitance is formed by two adjacent 'τ' ends. 20. The discontinuous transmission line structure of claim η, further comprising: a substrate for placing the input transmission line, the wheeled transmission line, the woven inductor element and the parallel grounded capacitor element; and a person $1 ground plate 'Set under the substrate. _ 19