TWI604664B - Multi-arm trap antenna - Google Patents

Description

Multi-arm trap antenna

The present invention relates to an antenna for a wireless communication device, and more particularly to a multi-arm trap antenna.

With wireless communication devices prevailing, these devices are light, thin, and versatile, but the space for accommodating antennas is getting smaller and smaller, and the bandwidth required for antennas is becoming wider and wider. Therefore, the technology of antenna reduction, multi-frequency and wide frequency has been continuously evolved in response to the market demand of wireless communication devices.

The multi-frequency antenna design of the existing wireless communication device is achieved by using the trapping component principle, such as Taiwan Patent Publication No. 201044695 "a multi-frequency single-path monopole antenna", that is, the multi-frequency operation is realized by the trapping component principle. However, using this design method, the antenna broadband requirements cannot be met.

At present, there is also a three-dimensional structure to achieve multi-frequency or wide-band operation, such as Taiwan Patent Publication No. 200929688 "a multi-frequency antenna", but using this design method will make the antenna itself occupy too much space and cannot effectively use the space. Install other components. In order to meet the antenna miniaturization, multi-frequency and broadband requirements of existing wireless communication devices, an improved antenna that can be used for wireless communication devices will be required.

The present invention provides a multi-arm trap antenna having characteristics of downsizing, multi-frequency, and wide frequency.

For the above purposes, the multi-arm trap antenna of the present invention comprises: at least two arms, the arm includes at least one arm segment; at least one trap assembly, the trap assembly includes an inductive component, and the electrical connection arm An arm feeding component for electrically connecting the positive electrode of the RF signal to at least one arm; a grounding component for electrically connecting the RF signal to the negative pole to provide grounding to form a monopole antenna for electrically connecting the negative electrode of the RF signal to The arm of the positive polarity electrical connection of the RF signal forms an inverted F antenna for electrically connecting the negative pole of the RF signal to at least one arm to form a coupled slot antenna.

The arm bends the wiring in a low posture close to the grounding element to reduce the height of the antenna, so that the multi-arm trap antenna can better adapt to the low space of the wireless communication device.

The multi-arm trap antenna of the present invention, wherein the length, width and shape of the arm segments can be adjusted according to characteristics and space requirements, can be formed by etching, printing or optical processes, and electrically connected into a continuous path via the trap assembly.

The multi-arm trap antenna of the present invention, wherein the inductive component of the trap assembly can be a lumped circuit component or an element formed using etching, printing or optical processes.

The multi-arm trap antenna of the present invention, wherein the trap component in the arm can adjust the capacitance increased due to the shortening of the antenna length, and also utilizes the trap component to have an approximate short-circuit characteristic at a low frequency, and at a high frequency It has an approximate open circuit characteristic, and uses antenna configurations such as single pole, inverted F, and coupled slot to make the multi-arm notch antenna have the characteristics of reduction, multi-frequency and wide frequency.

The following is a detailed description of the present invention and the detailed description of the various features and features of the present invention.

100‧‧‧Multi-arm trap antenna

200‧‧‧ arms

210‧‧‧arm fragment

220‧‧‧ arm segment

230‧‧‧ arm segment

240‧‧‧arm fragment

300‧‧‧ notch components

400‧‧‧ signal feed component

500‧‧‧ Grounding components

600‧‧‧ diode

The first picture is a conventional multi-frequency single-path monopole antenna, Taiwan Patent Publication No. 201044695.

The second figure shows the standing wave ratio (VSWR) of the multi-frequency single-path monopole antenna used in the first figure.

The third figure is a schematic diagram of a monopole antenna according to an embodiment of the present invention.

The fourth figure is a third diagram showing the standing wave ratio (VSWR) of a monopole antenna according to an embodiment of the present invention.

Figure 5 is a third diagram showing the radiation efficiency of a monopole antenna in accordance with an embodiment of the present invention.

The sixth figure is a comparison diagram of the standing wave ratio (VSWR) of the multi-frequency single-path monopole antenna test in the second figure and the standing wave ratio (VSWR) of the monopole antenna according to the fourth embodiment of the present invention.

FIG. 7 is a schematic diagram showing the inductance of a trapping component of a monopole antenna using etching, printing or optical processes according to an embodiment of the present invention.

Figure 8 is a schematic view showing the use of a wafer type inductor for a trap assembly of a monopole antenna according to an embodiment of the present invention.

The ninth embodiment is a monopole antenna according to an embodiment of the present invention, wherein a part of the arms only has a schematic diagram of one arm segment.

The tenth figure is a schematic diagram of the electrical connection between the monopole antenna arms via the trap assembly according to an embodiment of the present invention, and the dotted line can be laid around the block.

The eleventh and twelfth drawings are schematic diagrams of switching between the monopole antenna arms via the diode switch according to the embodiment of the present invention.

Figure 13 is a schematic view showing the bending height reduction of a monopole antenna arm according to an embodiment of the present invention.

Fourteenth and fifteenth drawings are schematic views of a plurality of trap components of a monopole antenna according to an embodiment of the invention.

Figure 16 is a schematic diagram of an inverted F antenna according to an embodiment of the present invention.

Figure 17 is a schematic diagram of a coupled slot antenna in accordance with an embodiment of the present invention.

Figure 18 is a schematic view showing the size of the coupling slot antenna arm bent and reduced according to an embodiment of the present invention.

Figure 19 is a schematic view showing three arms of a coupled slot antenna according to an embodiment of the present invention.

Figure 20 is a schematic diagram of a coupled slot antenna according to an embodiment of the present invention, wherein a portion of the arm includes only one arm segment.

Referring to the third figure, the multi-arm trap antenna 100 of the present invention comprises: two arms 200, the arm 200 includes arm segments 210, 220; two trap assemblies 300, and the trap assembly 300 includes an inductor The component is electrically connected to the arm segments 210 and 220 of the arm 200; the signal feeding component 400 can be an RF connector, a metal dome, a coaxial cable or a microstrip transmission line, etc., for electrically connecting the positive electrode of the RF signal to two branches. The arm 200 can be electrically connected by etching, printing or optical processes for the convenience of operation; a grounding component 500 is used for electrically connecting the RF signal negative electrode to provide grounding to form a monopole antenna. The length, width and shape of the arm segments 210 and 220 can be adjusted according to characteristics and space requirements, and can be formed by etching, printing or optical processes, electrically connected into a continuous path via the trap assembly 300, and bent in a low posture. The grounding element 500 is used to reduce the antenna height. The arm segment 210 path resonates to a high frequency, and the total length of the arm segments 210 and 220 resonates to a low frequency.

Referring to the seventh embodiment, an embodiment of a multi-arm trapped monopole antenna uses two arms 200 and two trap assemblies 300. The trap assembly 300 includes an inductive component. The inductive component is electrically connected to the arm segments 210, 220 of the arm 200 using etching, printing or optical processes to form a monopole antenna.

Referring to the eighth embodiment, an embodiment of a multi-arm trapped monopole antenna uses two arms 200 and two trap assemblies 300. The trap assembly 300 includes an inductive component. The inductive component forms a monopole antenna using the arm segments 210, 220 of the chip inductor electrical connection arm 200.

Referring to the ninth embodiment, an embodiment of a multi-arm trapped monopole antenna uses two arms 200 (one of the arms 200 includes only one arm segment 210, the path Resonating another separate frequency) and a notch assembly 300, the notch assembly 300 includes an inductive component that uses the die inductively connect the arm segments 210, 220 of the arm 200 to form a monopole antenna.

Referring to FIG. 10, an embodiment of a multi-arm trapped monopole antenna 100 uses two arms 200 and three trap assemblies 300. The trap assembly 300 includes an inductive component. Two notch assemblies 300 are electrically connected to the arm segments 210, 220 of the arm 200, wherein one of the trap assemblies 300 is electrically connected between the two arms 200 for wire inductance, and the dotted line can be laid around the block. The conductive material forms a monopole antenna.

Referring to FIG. 11 , an embodiment of a multi-arm trapped monopole antenna 100 uses two arms 200 and two trap assemblies 300 and is provided by a diode 600. The switch switching arm 200 adjusts the bandwidth to form a monopole antenna.

Referring to FIG. 12, an embodiment of a multi-arm trapped monopole antenna using three arms 200 (two of which comprise only one arm segment 210) And a trap assembly 300, and the switching arm 200 is adjusted by the diode 600 switch to adjust the frequency to form a monopole antenna.

Referring to FIG. 13 , an embodiment of a multi-arm trapped monopole antenna 100 uses two arms 200 and two trap assemblies 300, and the arms 200 are bent as needed. At different angles to reduce the height, the trap assembly 300 includes an inductive component that uses the wafer inductor to electrically connect the arm segments 210, 220 of the arm 200 to form a monopole antenna.

Please refer to the fourteenth figure, an embodiment of a multi-arm trapped monopole antenna, which is more The arm trap antenna 100 uses two arms 200 and four notch assemblies 300. The trap assembly 300 includes an inductive component that is formed using the arm segments 210, 220, 230 of the chip inductive electrical connection arm 200. Monopole antenna.

Referring to FIG. 15 , an embodiment of a multi-arm trapped monopole antenna 100 uses three arms 200 and seven notch assemblies 300, and the trap assembly 300 includes an inductor. An element that forms a monopole antenna using the arm segments 210, 220, 230, 240 of the chip inductor electrical connection arm 200.

Referring to FIG. 16 , an embodiment of the multi-arm trap antenna 100 is substantially the same as the embodiment of the third embodiment. The grounding component 500 is used for electrically connecting the negative electrode of the RF signal. The arm 200 to the positive electrical connection of the RF signal forms an inverted F antenna. Other examples of the multi-arm notch inverted F antenna can be referred to the other examples of the multi-arm trapped monopole antenna described above, and the grounding element 500 is used to electrically connect the negative electrode of the RF signal to the arm 200 of the positive electrode of the RF signal. The arm is notched and the F antenna is inverted. The arm segment 210 path resonates to a high frequency, and the total length of the arm segments 210 and 220 resonates to a low frequency.

Referring to FIG. 17, an embodiment of a multi-arm trap antenna includes: two arms 200, and the arm 200 includes arm segments 210 and 220; two notches The component 300, the trap assembly 300 includes an inductive component, electrically connecting the arm segments 210, 220 of the arm 200; a signal feeding component 400, which can be an RF connector, a metal dome, a coaxial cable or a microstrip transmission line, etc. To electrically connect the positive electrode of the RF signal to an arm 200; a grounding element 500 for electrically connecting the negative electrode of the RF signal to an arm 200 to form the coupled slot antenna 100. The length, width and shape of the arm segments 210 and 220 can be adjusted according to characteristics and space requirements, and can be formed by etching, printing or optical processes, and electrically connected through the trap assembly 300 into a continuous path in a low posture. The bent wiring is adjacent to the grounding element 500 for reducing the antenna height. The arm segment 210 path resonates to a high frequency, and the total length of the arm segments 210 and 220 resonates to a low frequency.

Referring to FIG. 18, an embodiment of a multi-arm trap coupled slot antenna uses two arms 200 (one of which is bent to reduce the size) and two The trap assemblies 300 form a coupled slot antenna.

Referring to FIG. 19, an embodiment of a multi-arm trap coupled slot antenna 100 uses three arms 200 and three notch assemblies 300 to form a coupled slot antenna.

Referring to the twentieth diagram, an embodiment of a multi-arm trap coupled slot antenna uses three arms 200 (one of which includes only one arm segment 210). And two notch assemblies 300 form a coupled slot antenna.

The multi-arm trapped monopole antenna embodiment can also be implemented on the multi-arm notch inverted F antenna and the multi-arm trap coupling slot. antenna.

Referring to the graphs of the fourth to sixth graphs, the operation and performance of the present invention are compared. The data shown in the graphs can be used to understand that the multi-arm trap antenna of the present invention is reduced in size, multi-frequency, and broadband. The effect, and not seen in public use, is in line with the provisions of the Patent Law, and it is a matter of granting a patent.

The above embodiments of the present invention are provided for convenience of explanation only. When the meaning of the case cannot be limited, the various transformation designs according to the scope of the listed patent application should be included in the patent scope of the present application.

100‧‧‧Multi-arm trap antenna

200‧‧‧ arms

210‧‧‧arm fragment

220‧‧‧ arm segment

300‧‧‧ notch components

400‧‧‧ signal feed component

500‧‧‧ Grounding components

Claims (10)

A multi-arm trap antenna comprising: at least two arms, the arm comprising at least one arm segment; at least one trap assembly, the trap assembly comprising an inductive component, the trap assembly electrically connecting the arm An arm feeding component for electrically connecting at least one arm of the RF signal positive electrode; a grounding component for electrically connecting the RF signal negative electrode of the signal feeding component; the arm bending the wiring in a low posture Close to the grounding element to reduce the height of the multi-arm trap antenna. The multi-arm trap antenna according to claim 1, wherein the length, width and shape of the arm segment of the arm are adjusted according to characteristics and space, and the arm segment of the arm is etched, One of the process makers of printing and optics. The multi-arm trap antenna according to claim 1, wherein the inductive component of the trap component is a chip inductor. The multi-arm trap antenna according to claim 1, wherein the inductive component of the trap assembly is formed by one of etching, printing, and optical processes. The multi-arm trap antenna according to claim 1, wherein the arms are electrically connected by a trap assembly. The multi-arm trap antenna according to claim 1, wherein the arms are electrically connected by wires, and the arm is provided with a conductive material around the block. The multi-arm trap antenna according to claim 1, wherein the arm is switched between the arms by a diode switch to adjust the bandwidth and frequency. The multi-arm trap antenna according to claim 1, wherein the grounding element is configured to electrically connect the RF signal negative electrode to provide grounding to form a monopole antenna. The multi-arm trap antenna according to claim 1, wherein the grounding element is configured to electrically connect the RF signal negative electrode to the arm of the RF signal positive electrical connection to form an inverted F antenna. The multi-arm trap antenna according to claim 1, wherein the grounding element is configured to electrically connect the RF signal negative electrode to at least one of the arms to form a coupled slot antenna.