CN104810611A - Monopolar antenna with a first rectangular via - Google Patents

Abstract

The invention discloses a monopole antenna with a first rectangular via hole, which comprises two oscillator units which are vertically symmetrical; each oscillator unit comprises a triangular first radiating patch, and a triangular inner hole is formed in the first radiating patch; a transition radiation plate perpendicular to the bottom edge of the first radiation piece extends from the bottom edge of the first radiation piece, and a second radiation piece parallel to the bottom edge of the first radiation piece is arranged at the free end of the transition radiation plate; through excellent structural design, under the conditions of continuous tests and parameter adjustment, the excellent front-to-back ratio characteristic is realized, the front-to-back ratio of the lowest frequency point of a single radiation unit is more than 30dB, and the front-to-back ratio in a frequency band is averagely more than 32 dB; and the gain of the lowest frequency point is larger than 9.37dBi and the average gain in the frequency band is larger than 9.8dBi according to the measured data.

Description

Monopolar antenna with a first rectangular via

technical field

The invention relates to a monopolar antenna provided with a first rectangular via hole.

Background technique

The main part of the antenna is the vibrator, which is a device that converts high-frequency current into radio waves and transmits them into space, and at the same time can collect space radio waves and generate high-frequency currents. The vibrator can be regarded as a tuned circuit composed of capacitance and inductance; at certain frequency points, the capacitance and inductance of the tuned circuit will cancel each other out, and the circuit will show pure resistance. This phenomenon is called resonance, and the resonance phenomenon corresponds to The working frequency point is the resonant frequency point, and the energy at the resonant frequency point of the vibrator has the strongest radiation characteristics. The vibrator structure with resonance characteristics is called a vibrator vibrator, and the vibrator structure directly excited by high-frequency current is called an active vibrator, otherwise it is called a passive vibrator; in the existing vibrator, the vibrator is adjusted according to the needs of actual use. During design, in order to make the resonant frequency point of the vibrator meet the set requirements, the input impedance of the vibrator needs to be adjusted. The adjusted vibrator and ordinary vibrator still cannot meet the requirements of the current communication standard. The current communication standard is getting higher and higher. The requirements of the vibrator are getting higher and higher, and the gain, directivity, and front-to-back ratio of the current vibrator need to be broken through; therefore, if you want a good antenna, you must start with the vibrator.

Contents of the invention

The object of the present invention is to overcome the above-mentioned shortcomings, and provide a monopolar antenna with high gain and good directivity provided with a frequency-increasing hole and an isolation part.

In order to achieve the above object, the specific solution of the present invention is as follows: a monopolar antenna provided with a first rectangular via hole, including a reflector, and a plurality of oscillators located on the reflector, the oscillator includes two upper and lower Symmetrical vibrator unit; each vibrator unit includes a triangular first radiation piece, and a triangular inner hole is formed in the first radiation piece; the bottom edge of the first radiation piece extends out from the bottom edge a vertical transition radiant plate, the free end of the transition radiant plate is provided with a second radiant plate parallel to the bottom edge of the first radiant plate;

The monopolar antenna also includes two feeding coupling lines arranged between the two dipole units, and the two feeding coupling lines are correspondingly connected to the two dipole units.

Wherein, the width of the transitional radiation plate is 5mm-15cm.

Wherein, the two bottom corners of the first radiation sheet are chamfered.

Wherein, the side width of the first radiation sheet is 5mm-10mm.

Wherein, the inner hole is an equilateral triangle.

Wherein, the length of the second radiation sheet is 30mm-40mm.

Wherein, the width of the second radiation sheet is 2mm-4mm.

Wherein, the angle between the transitional radiant plate and the bottom edge of the first radiant sheet is provided with a circular chamfer.

Wherein, L-shaped spacer rods respectively extend on both sides of the transitional radiation plate, and the free ends of the L-shaped spacer rods face to one side of the second radiation sheet.

Wherein, a rectangular frequency-increasing band is provided on the second radiation sheet, and the frequency-increasing band is filled with semiconductors;

Wherein, the side of the second radiating sheet facing the first radiating sheet is provided with a zigzag isolation zone;

Wherein, the transition radiating plate is provided with a plurality of first rectangular via holes arranged in a row and a plurality of second rectangular via holes arranged in a row, and the gap between the first rectangular via hole and the second rectangular via hole is The lateral distance is 1 mm; each of the first rectangular vias and the adjacent second rectangular vias are alternately arranged;

The beneficial effects of the present invention are: through excellent structural design, through continuous testing and parameter adjustment, excellent front-to-back ratio characteristics are realized, the front-to-back ratio of the lowest frequency point of a single radiation unit is greater than 30dB, and the front-to-back ratio in the frequency band is greater than 32dB on average; and has High unit gain, according to the measured data, it can be seen from the pattern that the gain at the lowest frequency point is greater than 9.37dBi, and the average gain in the frequency band is greater than 9.8dBi.

Description of drawings

Fig. 1 is the front view of the present invention;

Fig. 2 is the front view of the vibrator of the present invention;

Fig. 3 is a partial enlarged view of Fig. 2;

Fig. 4 is the experimental data diagram of front-to-back ratio when the frequency is 800MHZ;

Fig. 5 is the experimental data diagram of front-to-back ratio when the frequency is 890MHZ;

Fig. 6 is the experimental data diagram of front-to-back ratio when the frequency is 920MHZ;

Fig. 7 is the experimental data diagram of front-to-back ratio when the frequency is 950MHZ;

Figure 8 is a direction diagram representing gain when the frequency is 800MHZ;

Fig. 9 shows the direction diagram of gain when the frequency is 890MHZ;

Fig. 10 is the directional diagram that represents gain when frequency is 950MHZ; The reference sign explanation among Fig. 1 to Fig. 9:

7-reflector; A-vibrator;

1-the first radiation sheet; 11-inner hole;

2-transitional radiation plate; 21-the first rectangular via; 22-the second rectangular via;

3-isolating rod;

4-the second radiation sheet; 41-increasing frequency band;

5- Isolation zone;

6- Feed coupling line.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, and the implementation scope of the present invention is not limited thereto.

As shown in Figures 1 to 10, a monopolar antenna provided with a first rectangular via hole described in this embodiment includes a reflector 7, and a plurality of oscillators A arranged on the reflector, the oscillator A includes two vertically symmetrical vibrator units; each vibrator unit includes a triangular first radiation piece 1, and a triangular inner hole 11 is formed in the first radiation piece 1; the first radiation piece The bottom edge of 1 extends with a transitional radiation plate 2 perpendicular to its bottom edge, and the free end of the transitional radiation plate 2 is provided with a second radiation sheet 4 parallel to the bottom edge of the first radiation sheet 1; the unipolar The antenna also includes two feeding coupling lines arranged between the two oscillator units, and the two feeding coupling lines are respectively connected to the two oscillator units; through continuous oscillator structure design, and through continuous experiments and parameters After adjustment, the vibrator structure was finally determined, and it showed excellent communication electrical parameter performance in the 800MHZ to 950MHZ frequency band. Specifically, the front-to-back ratio of the lowest frequency point of a single radiating unit is greater than 30dB, and the front-to-back ratio in the frequency band is greater than 32dB on average; the low-frequency point gain Greater than 9.37dBi, the average gain in the frequency band is greater than 9.8dBi.

The specific actual test results are calculated by HFSS15 software in the table below:

As shown in the above table, it exhibits excellent communication electrical parameter performance in the 800MHz to 950MHz frequency band. Specifically, the front-to-back ratio of the lowest frequency point of a single radiating unit is greater than 31dB. At 950MHz, the front-to-back ratio of the lowest frequency point of a single radiating unit is 36dB. ; while the low-frequency point gain is greater than 9.35dBi, and the average gain in the frequency band is greater than 9.8dBi.

Specifically, the front-to-back ratio data diagrams of four frequency bands and the gain data diagrams of three frequency bands are intercepted from the experimental data, as shown in Figure 4 to Figure 10, and excellent front-to-back ratio characteristics are achieved at 800MHz to 950MHz, among them, at 800MHz, as shown 4. The in-band front-to-back ratio is 31.225dB; at 890MHz, as shown in Figure 5, the in-band front-to-back ratio is 33.635dB; at 920MHz, as shown in Figure 6, the in-band front-to-back ratio is 34.135dB; at 950MHz, as As shown in Figure 7, the front-to-back ratio in the frequency band is 36.000dB; and the performance in terms of gain: as shown in Figure 8, when it is at 800MHz, its gain reaches: 9.3521 dBi; as shown in Figure 9, when it is at 890MHz, its gain reaches: 9.7550dBi ; As shown in Figure 10, at 950MHz, its gain reaches: 10.200dBi; it can be known that its average internal front-to-back ratio is greater than 33dB, and its average gain is greater than 9.8dBi.

In the monopolar antenna provided with the first rectangular via hole described in this embodiment, the width of the transitional radiation plate 2 is 5mm-15cm. It is measured through experiments that the width of the transitional radiation plate 2 is 5mm-15cm, which can effectively enhance the gain effect of the high frequency band.

In the monopolar antenna provided with a first rectangular via hole described in this embodiment, two bottom corners of the first radiation sheet 1 are provided with chamfers. It is measured through experiments that the two bottom corners are provided with chamfers, which can effectively enhance the gain effect of the high frequency band.

In the monopolar antenna provided with a first rectangular via hole described in this embodiment, the side width of the first radiation piece 1 is 5mm-10mm. It is measured through experiments that the side width of the first radiation sheet 1 is 5mm-10mm, which can effectively enhance the gain effect of the high frequency band.

In the monopolar antenna provided with the first rectangular via hole described in this embodiment, the inner hole 11 is an equilateral triangle. It is measured through experiments that the inner hole 11 is an equilateral triangle, which can effectively enhance the gain effect of the high frequency band.

In the monopolar antenna provided with the first rectangular via hole described in this embodiment, the length of the second radiation piece 4 is 30mm-40mm. It is measured through experiments that the length of the second radiation sheet 4 is 30mm-40mm, which can effectively enhance the gain effect of the high frequency band.

In the monopolar antenna provided with the first rectangular via hole described in this embodiment, the width of the second radiation piece 4 is 2mm-4mm. It is measured through experiments that the width of the second radiation sheet 4 is 2mm-4mm, which can effectively enhance the gain effect of the high frequency band.

In the monopolar antenna provided with a first rectangular via hole described in this embodiment, the angle between the transitional radiation plate 2 and the bottom edge of the first radiation sheet 1 is provided with a circular chamfer. It is found through experiments that the angle between the transitional radiating plate 2 and the bottom edge of the first radiating sheet 1 is provided with a circular chamfer, which can effectively enhance the gain effect in the high frequency band.

In the monopolar antenna provided with a first rectangular via hole described in this embodiment, L-shaped isolation rods 3 are respectively extended on both sides of the transition radiation plate 2, and the free space of the L-shaped isolation rods 3 end facing one side of the second radiation sheet 4 . It is found through experiments that setting the L-shaped isolation rod 3 can effectively increase the isolation degree.

A monopolar antenna provided with a first rectangular via hole described in this embodiment, a rectangular frequency-increasing band 41 is provided on the second radiation sheet 4, and the frequency-increasing band 41 is filled with semiconductors; through experiments It is measured that it can effectively enhance the gain effect of the high frequency band.

A monopolar antenna provided with a first rectangular via hole described in this embodiment, the side of the second radiation sheet 4 facing the first radiation sheet 1 is provided with a sawtooth-shaped isolation strip 5; measured through experiments , setting the isolation band 5 can effectively increase the isolation, and the isolation is 30dB.

A monopolar antenna provided with a first rectangular via hole described in this embodiment, the transition radiation plate 2 is provided with a plurality of first rectangular via holes 21 arranged in a row and a plurality of first rectangular via holes 21 arranged in a row Two rectangular via holes 22, the lateral distance between the first rectangular via hole 21 and the second rectangular via hole 22 is 1 mm; the distance between each first rectangular via hole 21 and the adjacent second rectangular via hole 22 Interlaced arrangement; through this structural design, the theoretical length of the current flowing through the transitional radiation plate 2 can be increased to achieve the effect of increasing the gain. Arranged in this way, the effect of the increase is obvious, and the gain is significantly increased.

Through excellent structural design, through continuous experiments and parameter adjustments, excellent front-to-back ratio characteristics have been achieved. The front-to-back ratio of the lowest frequency point of a single radiating unit is greater than 30dB, and the front-to-back ratio in the frequency band is greater than 32dB on average; and it has a high unit gain. From the measured data, it can be seen from the pattern that the gain at the lowest frequency point is greater than 9.37dBi, and the average gain in the frequency band is greater than 9.8dBi.

The length of the base of the first radiation sheet 1 is 12.5-20.5 mm.

The above is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, features and principles described in the patent application scope of the present invention are included in the protection scope of the patent application of the present invention.

Claims (8)

1. A monopolar antenna provided with a first rectangular via hole, characterized in that it includes a reflector (7) and a plurality of oscillators (A) arranged on the reflector, and the oscillator (A) includes Two vibrator units that are symmetrical up and down; each of the vibrator units includes a triangular first radiation piece (1), and a triangular inner hole (11) is formed in the first radiation piece (1); the first A transition radiation plate (2) perpendicular to the base extends from the bottom of a radiation sheet (1), and the free end of the transition radiation plate (2) is provided with a The second radiation sheet (4); The monopolar antenna also includes two feeding coupling lines (6) arranged between the two dipole units, and the two feeding coupling lines (6) are correspondingly connected to the two dipole units; The transition radiation plate (2) is provided with a plurality of first rectangular via holes (21) arranged in a row and a plurality of second rectangular via holes (22) arranged in a row, and the first rectangular via holes (21 ) and the second rectangular via hole (22) is 1 mm in width; each first rectangular via hole (21) and the adjacent second rectangular via hole (22) are alternately arranged. 2. A monopolar antenna provided with a first rectangular via hole according to claim 1, characterized in that: the width of the transitional radiation plate (2) is 5mm-15cm. 3 . The monopolar antenna provided with a first rectangular via hole according to claim 1 , characterized in that: two bottom corners of the first radiation piece ( 1 ) are provided with chamfers. 4 . 4 . The monopolar antenna provided with a first rectangular via hole according to claim 1 , wherein the side width of the first radiation piece ( 1 ) is 5mm-10mm. 5. The monopolar antenna provided with a first rectangular via hole according to claim 1, characterized in that: the inner hole (11) is an equilateral triangle. 6. The monopolar antenna provided with a first rectangular via hole according to claim 1, characterized in that: the length of the second radiation piece (4) is 30mm-40mm. 7. The monopolar antenna provided with a first rectangular via hole according to claim 1, characterized in that: the width of the second radiation piece (4) is 2mm-4mm. 8. A monopolar antenna provided with a first rectangular via hole according to claim 1, characterized in that: the transition radiating plate (2) and the bottom edge of the first radiating sheet (1) The included corners are provided with rounded chamfers.