TWI773011B - Anti-jamming structure of millimeter wave antenna - Google Patents

Abstract

An anti-jamming structure of a millimeter-wave antenna has a transmitting array antenna and/or a receiving array antenna composed of at least one comb-shaped antenna element; the comb-shaped antenna element has an elongated antenna body and a microstrip line radiation component, One end of the antenna body can be connected to a millimeter-wave circuit capable of generating millimeter waves. The microstrip line radiating element consists of a plurality of intermediate microstrip line radiating elements arranged at intervals in the middle section of the antenna body, and an end set at the rear end of the antenna body. It is composed of microstrip line radiating units. Each middle microstrip line radiating unit and the end microstrip line radiating unit are arranged on the antenna body with a same skew direction, so as to reduce the interference phenomenon of opposite noise.

Description

Anti-jamming structure of millimeter wave antenna

The present invention relates to an anti-jamming structure of a millimeter-wave antenna, in particular, to an antenna structure that can effectively reduce counter-noise interference and increase gain.

As consumers pay more and more attention to the safety of the use of cars and the development of related technologies gradually matures, various dynamic conditions around the vehicle (such as the relative position, relative speed and angle of vehicles, pedestrians or other obstacles) can be detected. Vehicle collision avoidance detection devices for assisting driving to prevent collision accidents are also gradually being widely used; the technical means used in common collision avoidance detection devices can be roughly divided into the following categories:

Ultrasonic: is a mechanism that uses ultrasonic waves to measure the distance to an object, using an ultrasonic sensor to send and receive ultrasonic pulses through a transducer. This ultrasonic sensor can be activated, or before each range reading based on temperature , voltage and other parameters change to calibrate with certain accuracy; but in use, because the detected object is too small to effectively reflect the ultrasonic wave, so the object too small may not be able to reflect enough ultrasonic wave for the detection of the ultrasonic sensor requirements, resulting in application constraints.

Infrared: It uses the ranging principle of light reflection, emits light through an infrared LED, and receives and measures the intensity of infrared light by another infrared receiving element, and judges the distance by its intensity; however, the angle of infrared ranging is small and lacks Integrity, since the basic principle of detection is to use the reflection of light, when it is used on a surface with poor reflection efficiency (such as a dark surface), it will seriously affect the detection result and form a lack of application.

Laser: It uses a transmitter to emit a laser beam and record the time (T1). When the laser beam hits the object and then reflects back, the time when the sensor receives the returned light is (T2). Assuming that the laser beam is at The speed of propagation in the air is V, the distance between the sensor and the measured object can be calculated as: S=V*(T2-T1)/2; however, when the laser device is in use, if the surface of the transmitter is stained When there are impurities such as sticky water and ash, the laser light will be reflected back, resulting in false signals, and the measurement accuracy of laser ranging is poor, which is a disadvantage of its use.

Millimeter wave: It uses electromagnetic waves with wavelengths in the range of 1mm~10mm (frequency in the range of 30GHz~300GHz) to measure the time difference between its emission and reception, and then calculate its distance; if it is suitable for long-distance detection in vehicles, It should be more suitable to use the 77GHz millimeter-wave frequency band, and the millimeter-wave frequency band currently used in the car surround radar is about 24GHz. Since the millimeter-wave has the longest wavelength, it is less affected by the environmental climate and is most suitable for long-distance applications. detect.

Traditionally used in millimeter-wave devices to transmit or receive millimeter-wave antenna structures, as shown in Figure 1, the structure of the millimeter-wave antenna B can be directly etched on the circuit board C, including: In the embodiment disclosed in FIG. 1, the transmitting array antenna B1 is composed of three comb-shaped antenna elements 2, and the receiving array antenna B1 is composed of three comb-shaped antenna elements 2. The array antenna B2 is composed of four comb-shaped antenna elements 2 (the comb-shaped antenna elements 2 located on both sides of the receiving array antenna B2 are for isolation and do not introduce millimeter waves). The number of the comb-shaped antenna elements 2 is adjusted according to the wave emission intensity and reception sensitivity to meet different requirements.

The above-mentioned conventional comb-shaped antenna element 2 structure is mainly composed of a plurality of microstrip line radiating elements 22 connected in series, and each microstrip line radiating element 22 is a rectangular (or square) structure with a fixed size, and the like The antenna bodies 21 are arranged on a strip of antenna body 21 in a forward direction, so as to form a comb-shaped antenna element 2 composed of a series-feeding structure; if the comb-shaped antenna element 2 of this series-feeding structure is applied to the transmitting array antenna B1 In the state of transmitting millimeter waves, the millimeter wave energy output by the preset millimeter wave circuit C1 on the circuit board C is first fed into the head end of the comb antenna element 2 (close to one end of the millimeter wave circuit C1 ), When the first (closest to the millimeter-wave circuit C1) microstrip line radiating element 22 radiates a part of the energy, the remaining energy continues along the antenna body 21 toward the end (tail) end (away from the end of the millimeter-wave circuit C1) Feed, and radiate part of the energy from the microstrip line radiating elements 22 in the middle one by one (the other small part is lost in the process of transmission), until a microstrip line radiating element 22 at the last (tail) end will radiate all the remaining energy. Energy radiates out.

However, since the microstrip line radiating elements 22 are arranged on the antenna body 21 in the forward direction, in practical application, the comb-shaped antenna element 2 is easily interfered by the electromagnetic wave noise from the opposite direction, which affects each Normal operation of the comb antenna element 2 .

Furthermore, in the process of millimeter wave energy being radiated to the outside through the comb-shaped antenna element 2, the energy radiated by the microstrip line radiating elements 22 in the comb-shaped antenna element 2 is not the same. Under the premise that the area of 22 is proportional to the efficiency of external radiated energy, since each microstrip line radiating element 22 of the comb-shaped antenna element 2 has the same area, shape and arrangement, in practical applications, when the millimeter The millimeter wave output by the wave circuit C1 has the maximum energy when it is introduced into the antenna body 21, so that the microstrip line radiation unit 22 closest to the millimeter wave circuit C1 will radiate more energy and bear a greater load. It is gradually attenuated by the microstrip line radiation unit 22 one by one, and the microstrip line radiation unit 22 farther away from the millimeter wave circuit C1 will gradually radiate less energy and bear less load. The uneven distribution of the radiated energy of the unit 22 will seriously affect the overall external radiated energy efficiency of the comb-shaped antenna element 2 .

Conversely, if the comb-shaped antenna element 2 is applied to the receiving array antenna B2 in a state of receiving millimeter waves, the received induced radiation energy may be unevenly distributed.

In view of the above-mentioned disadvantages of the conventional millimeter-wave antenna structure, the inventors have studied and improved the method for these disadvantages, and finally the present invention is produced.

The main purpose of the present invention is to provide an anti-jamming structure for a millimeter-wave antenna, which has a transmitting array antenna and/or a receiving array antenna respectively composed of at least one comb-shaped antenna element; each of the comb-shaped antenna elements has an elongated antenna body, and a microstrip line radiating element arranged on the antenna body, one end of the antenna body can be connected to a millimeter-wave circuit on a circuit board that can generate millimeter waves, the microstrip line radiating element is arranged by a plurality of spaced arrangements The middle microstrip line radiating unit in the middle section of the antenna body and an end microstrip line radiating unit disposed at the end of the antenna body away from the millimeter-wave circuit are composed, and each middle microstrip line radiating unit is connected to the end microstrip line The line radiating elements are arranged on the antenna body at intervals in the same skew direction (for example, a 45-degree skew), so as to achieve the effect of reducing the interference of opposite noises.

Another object of the present invention is to provide an anti-jamming structure for a millimeter-wave antenna, wherein each intermediate microstrip line radiating element is in a rectangular shape, and the length-width ratio of the rectangle is in the range of 1.2-1.3:1, so that the intermediate The resonance point of the microstrip line radiating element can be maintained at a position close to 76.5 GHz. The arrangement of these intermediate microstrip line radiating elements will be relatively close to the area of the intermediate microstrip line radiating element of the millimeter-wave circuit. is smaller than or equal to the area of the middle microstrip line radiating element relatively far away from the millimeter-wave circuit, and the size ratio of the two adjacent middle microstrip line radiating elements is set to be in the range of 1.1~1.2:1, so that each The efficiency of the radiating energy of the intermediate microstrip line radiating element is close to the state of uniform distribution, thereby improving the overall gain of the comb-shaped antenna element.

Another object of the present invention is to provide an anti-interference structure for a millimeter-wave antenna, wherein the part where the end microstrip line radiating element is connected to the antenna body has a rectangular recess, which can reduce the reflection of the end microstrip line radiating element coefficient.

In order to achieve the above objects and effects, the technical means adopted in the present invention include: at least one comb-shaped antenna element, the comb-shaped antenna element has an elongated antenna body, and a microstrip line disposed on the antenna body A radiating element, one end of the antenna body can be connected to a millimeter-wave circuit capable of generating millimeter waves; the microstrip line radiating element is composed of a plurality of intermediate microstrip line radiating units arranged at intervals in the middle section of the antenna body, and a The antenna body is composed of an end microstrip line radiating unit at one end of the antenna body away from the millimeter-wave circuit. Each intermediate microstrip line radiating unit and the end microstrip line radiating unit are arranged on the antenna body at intervals in a skewed direction.

According to the above structure, the skew angles between each middle microstrip line radiating element and the end microstrip line radiating element and the antenna body are the same.

According to the above structure, the skew angle between each middle microstrip line radiating unit and the end microstrip line radiating unit and the antenna body is 45 degrees.

According to the above structure, the skew angles between each of the middle microstrip line radiation units and the end microstrip line radiation units and the antenna body are different.

According to the above structure, each of the middle microstrip line radiating elements is connected to the antenna body with its upper corners respectively, and the antenna body is provided with a bent portion at one end close to the end microstrip line radiating element.

According to the above structure, the area of the intermediate microstrip line radiating element located at one end of the antenna body relatively far from the millimeter-wave circuit is not smaller than the area of the intermediate microstrip line radiating element relatively close to the end of the millimeter-wave circuit.

According to the above structure, the arrangement of the intermediate microstrip line radiating elements is such that the area of the intermediate microstrip line radiating elements disposed closer to the millimeter-wave circuit is relatively smaller than that of the intermediate microstrip line radiating away from the millimeter-wave circuit. area of the unit.

According to the above structure, at least part of the adjacent intermediate microstrip line radiation units have the same area.

According to the above structure, the shape of each middle microstrip line radiation unit and the end microstrip line radiation unit is one of shapes selected from rectangles, polygons, and ellipses.

According to the above structure, the shape of each intermediate microstrip line radiating element is a rectangle, the length-width ratio of these intermediate microstrip line radiating elements is 1.2-1.3:1, and the ratio between the adjacent two gradually increasing intermediate microstrip line radiating elements is The area size ratio is 1.1~1.2:1.

According to the above structure, the shape of the end microstrip line radiating element is a square, the part where the end microstrip line radiating element and the antenna body are connected has a rectangular recess, and the end of the antenna body passes through the center of the recess , and then connected to the end microstrip line radiation unit near the center.

In order to obtain a more specific understanding of the above-mentioned objects, effects and features of the present invention, the following descriptions are given in accordance with the following drawings:

Referring to Figures 2 to 4, it can be seen that the structure of the millimeter-wave antenna A according to the first embodiment of the present invention includes: a transmitting array antenna A1 composed of at least one comb-shaped antenna element 1 and/or a transmission array antenna A1 composed of at least one comb-shaped antenna element 1 and other parts of the receiving array antenna A2. In this embodiment, the transmitting array antenna A1 is composed of three comb-shaped antenna elements 1, and the receiving array antenna A2 is composed of four comb-shaped antenna elements 1. In practical application, the transmitting array antenna A1 and/or the receiving array antenna A2 can respectively adjust the number of the comb-shaped antenna elements 1 according to the required millimeter-wave emission intensity and receiving sensitivity; wherein the comb-shaped antenna elements 1 are respectively It has an elongated antenna body 11 and a microstrip line radiating element 12 arranged on the antenna body 11. One end of the antenna body 11 is connected to a millimeter-wave circuit C1 on a circuit board C. The microstrip line The line radiating element 12 is composed of a plurality of intermediate microstrip line radiating elements 121 , 122 , 123 disposed in the middle section of the antenna body 11 in sequence and spaced apart, and an end disposed at an end of the antenna body 11 away from the millimeter-wave circuit C1 The microstrip line radiation unit 124 is formed.

In this embodiment, the intermediate microstrip line radiating elements 121 , 122 , 123 are respectively connected to the antenna body 11 only by their upper end corners, so that the intermediate microstrip line radiating elements 121 , 122 , 123 are formed Arranged and connected at intervals in a (same) oblique direction (45 degrees shown in the figure), a bend (45 degrees shown in the figure) is provided at one end of the antenna body 11 close to the end microstrip line radiating element 124 part 111, so that the end microstrip line radiation unit 124 can form a (same) skew angle arrangement with the aforementioned middle microstrip line radiation units 121, 122, 123 through the bending part 111, so as to reduce the opposite noise the effect of interference.

In practical application, the intermediate microstrip line radiation units 121 , 122 , 123 have different sizes and areas, and their arrangement is to be located in the intermediate microstrip line radiation unit closer to one end of the millimeter-wave circuits C1 The area of the unit 121 is set to be relatively small, and the areas of the intermediate microstrip line radiation units 122, 123, . The shapes of 122, 123 and the end microstrip line radiation unit 124 can be rectangle, polygon or ellipse.

In the preferred embodiment disclosed in the figure, the middle microstrip line radiation unit 121 is a rectangular structure, the length of the long side is L121, the length of the short side is W121, when the length of the long side L121 and the length of the short side are When the ratio of W121 is 1.2~1.3:1, the resonance point of the middle microstrip line radiating element 121 is maintained at a position close to 76.5 GHz, and the middle microstrip line radiating element 122 at the adjacent next position is also a similar rectangular structure , and has a fixed interval Y, the length of its long side is L122, the length of its short side is W122, and the ratio of the length of the long side L122 to the length of the short side W122 is also 1.2~1.3:1; at the same time, the middle of the next position The ratio of the area of the microstrip line radiation unit 122 (long side length L122*short side length W122) to the area (long side length L121*short side length W121) of the microstrip line radiation unit 121 in the original position is 1.1~1.2:1 .

It can be seen from the above analogy that the intermediate microstrip line radiation units 121, 122 and 123 can be respectively rectangular in shape, and the length-width ratio is limited to the range of 1.2~1.3:1, and two adjacent intermediate microstrip line radiation units are gradually increased. The area ratio of the unit is limited to the range of 1.1~1.2:1, and has a fixed separation distance Y; through this design of gradually increasing the area outward, when the millimeter-wave energy output by the millimeter-wave circuit C1, transmits To the middle microstrip line radiation unit 121 closest to the millimeter wave circuit C1 (at this time, the millimeter wave energy is the strongest and the radiation area is the smallest), after the middle microstrip line radiation unit 121 radiates a part of the energy, the remaining energy, continue to feed along the antenna body 21 toward the middle microstrip line radiating unit 122 at the next position (at this time, the millimeter wave energy is second, and the radiation area is slightly larger), so that the middle microstrip line at the next position radiates The unit 122 can use a larger radiation area to compensate for the attenuation of the millimeter-wave energy, so that the energy radiated from the middle microstrip line radiation unit 122 at the next position can approach the radiation of the middle microstrip line at the original position The energy radiated by the unit 121, in the same way, after the middle microstrip line radiation unit 122 at the next position radiates the energy, the remaining energy continues to be radiated by the middle microstrip line radiation unit 123 at the next position. , using the larger radiation area of the middle microstrip line radiation unit 123 in the second position to compensate for the re-attenuation of the millimeter wave energy, so that the radiation energy of the middle microstrip line radiation units 121, 122 and 123 at each position can be increased. A state close to an average distribution to improve the overall gain of the comb-shaped antenna element 1 .

In the preferred embodiment disclosed in the figure, the end microstrip line radiation unit 124 is preferably square (or rectangular), and the part where the end microstrip line radiation unit 124 is connected to the antenna body 11 has a rectangular shape (square) concave notch 1241, the end of the antenna body 11 passes through the center of the concave notch 1241, and then connects to the end of the microstrip line radiating element 124 near the center of the design, through the concave notch 1241 to feed from the periphery , the reflection coefficient of the end microstrip line radiating element 124 can be reduced; therefore, when the middle microstrip line radiating elements 121, 122, 123 respectively radiate energy outward, the last remaining energy is transmitted to the end microstrip line through the antenna body 11. When the stripline radiating unit 124 is used, the residual energy can be completely radiated outwards by the end microstripline radiating unit 124 spreading and spreading evenly from a position close to the center to further improve the overall gain.

Referring to FIG. 5, it can be seen that the structure of the millimeter-wave antenna A00 according to the second embodiment of the present invention includes: a transmitting array antenna A100 composed of at least one comb-shaped antenna element 100 and/or composed of at least one comb-shaped antenna element 100 In this embodiment, each of the comb-shaped antenna elements 100 has a long antenna body 11 and a microstrip line radiating element 1200 disposed on the antenna body 11, respectively. One end of the antenna body 11 is connected to the millimeter-wave circuit C1 on a circuit board C, and the microstrip line radiating element 1200 is composed of a plurality of intermediate microstrip line radiation elements 121 arranged in the middle section of the antenna body 11 at intervals in sequence. , 122 , 123 , and an end microstrip line radiating element 124 disposed at one end of the antenna body 11 away from the millimeter-wave circuit C1 .

The difference between the comb-shaped antenna element 100 of the second embodiment and the comb-shaped antenna element 1 of the first embodiment is that each of the middle microstrip line radiation elements 121 , 122 , and 123 of the microstrip line radiation element 1200 And the end microstrip line radiating elements 124 are arranged on the antenna body 11 with a skew angle less than (or greater than) 45 degrees, thereby forming another comb-shaped antenna element 100 combination structure with similar functions.

Referring to FIG. 6, it can be seen that the structure of the millimeter-wave antenna A0 according to the third embodiment of the present invention includes: a transmitting array antenna A10 composed of at least one comb-shaped antenna element 10 and/or composed of at least one comb-shaped antenna element 10 In this embodiment, each of the comb-shaped antenna elements 10 respectively has a strip-shaped antenna body 11 and a microstrip line radiating element 120 disposed on the antenna body 11. One end of the antenna body 11 is connected to a millimeter-wave circuit C1 on a circuit board C, and the microstrip line radiating element 120 is composed of a plurality of intermediate microstrip line radiating elements 121 arranged in the middle section of the antenna body 11 at intervals. , 122 , 123 , and an end microstrip line radiating element 124 disposed at one end of the antenna body 11 away from the millimeter-wave circuit C1 .

The difference between the comb-shaped antenna element 10 of the third embodiment and the comb-shaped antenna element 1 of the aforementioned first embodiment lies in that the microstrip line radiation elements 121 , 122 , 123, having the same area at least in part; in the embodiment shown in FIG. 6, the microstrip line radiation element 120 has the same minimum area and the adjacent middle microstrip line radiation element 120 closest to the millimeter-wave circuit C1 Element 121, a largest-area intermediate microstrip line radiating element 123, located on the antenna body 11 at the position farthest from the millimeter-wave circuit C1, and two intermediate microstrip line radiating elements 122 of the same secondary large area and adjacent, located in the antenna The body 11 is located between the smallest-area middle microstrip line radiating unit 121 and the largest-area middle microstrip line radiating unit 123, thereby forming another arrangement that conforms to the gradual increase and decrease of each middle microstrip line radiating unit according to the area, and Combination structure of comb antenna elements 10 with similar functions.

Based on the above, the anti-jamming structure of the millimeter-wave antenna of the present invention can indeed achieve the effect of improving the gain and anti-jamming capability of each comb-shaped antenna element. However, the content of the above description is only the description of the preferred embodiment of the present invention, and all changes, modifications, changes or equivalent replacements extended by the technical means and scope of the present invention should also fall into the patent of the present invention. within the scope of the application.

1, 10, 100, 2 comb antenna elements

11, 21 Antenna body

111 Bending part

12, 120, 1200 microstrip line radiation components

121, 122, 123 Intermediate microstrip line radiation unit

124 End microstrip line radiation unit

1241 Concave Notch

22 Microstrip line radiation unit

A, A0, A00, B mmWave antenna

A1, A10, A100, B1 transmit array antenna

A2, A20, A200, B2 receiving array antenna

C circuit board

C1 mmWave circuit

L121, L122 Long side length

W121, W122 Short side length

Y spacing distance

Figure 1 is a schematic diagram of the structure of a conventional millimeter-wave antenna.

FIG. 2 is a schematic structural diagram of the first embodiment of the millimeter wave antenna of the present invention.

Fig. 3 is a partial enlarged schematic view of each intermediate microstrip line radiating element located in the middle section of the antenna body in Fig. 2.

Figure 4 is a partially enlarged schematic diagram of the end microstrip line radiating element located at the end (tail) end of the antenna body in Figure 2.

FIG. 5 is a schematic structural diagram of the second embodiment of the millimeter-wave antenna of the present invention.

FIG. 6 is a schematic structural diagram of a third embodiment of the millimeter wave antenna of the present invention.

1 Comb antenna element 11 Antenna body 12 Microstrip line radiation components 121, 122, 123 Intermediate microstrip line radiation unit 124 End microstrip line radiation unit A mmWave antenna A1 Transmitting Array Antenna A2 Receive Array Antenna C circuit board C1 mmWave circuit

Claims (27)

An anti-jamming structure for a millimeter-wave antenna, comprising: at least one comb-shaped antenna element, the comb-shaped antenna element has an elongated antenna body, and a microstrip line radiating element disposed on the antenna body, the antenna body One end can be connected to a millimeter-wave circuit capable of generating millimeter waves; the microstrip line radiating element is composed of a plurality of intermediate microstrip line radiating units arranged at intervals in the middle section of the antenna body, and a microstrip line radiating element disposed on the antenna body away from the millimeter wave It is composed of an end microstrip line radiating element at one end of the circuit, and the intermediate microstrip line radiating elements have at least one largest-area intermediate microstrip line radiating element located at one end relatively far from the millimeter-wave circuit, and at least one located relatively close to the millimeter wave circuit. The smallest-area intermediate microstrip line radiating element at one end of the wave circuit, the area of the largest-area intermediate microstrip line radiating element is larger than the area of the smallest-area intermediate microstrip line radiating element, and each intermediate microstrip line radiating element and the end microstrip line The line radiating elements are all arranged on the antenna body in a slanted direction at intervals. The anti-jamming structure of the millimeter-wave antenna according to claim 1, wherein the skew angles between each middle microstrip line radiating element and the end microstrip line radiating element and the antenna body are the same. The anti-jamming structure of the millimeter-wave antenna of claim 2, wherein the skew angle between each middle microstrip line radiating element and the end microstrip line radiating element and the antenna body is 45 degrees. The anti-jamming structure of the millimeter-wave antenna of claim 1, wherein the skew angles between each middle microstrip line radiating element and the end microstrip line radiating element and the antenna body are different. The anti-interference structure of a millimeter-wave antenna as claimed in claim 1 or 2 or 3 or 4, wherein each intermediate microstrip line radiating element is connected to the antenna body at its upper end angle, and the antenna body is located near the end microstrip line. One end of the radiation unit is provided with a bent portion. For the anti-interference structure of a millimeter-wave antenna according to claim 1 or 2 or 3 or 4, the area of the intermediate microstrip line radiating element located at one end of the antenna body relatively far away from the millimeter-wave circuit is not less than that of the end relatively close to the millimeter-wave circuit The area of the middle microstrip line radiating element. The anti-jamming structure of a millimeter-wave antenna as claimed in claim 5, wherein the area of the intermediate microstrip line radiating element located at one end of the antenna body relatively far from the millimeter-wave circuit is not less than the area of the intermediate microstrip line radiation relatively close to the end of the millimeter-wave circuit The area of the unit. The anti-jamming structure of the millimeter-wave antenna of claim 6, wherein the arrangement of the intermediate microstrip line radiating elements is such that the area of the intermediate microstrip line radiating elements disposed closer to the millimeter-wave circuit is relatively smaller than the area of the intermediate microstrip line radiating elements farther away from the millimeter-wave circuit. The area of the radiating element of the microstrip line in the middle of the millimeter-wave circuit. The anti-jamming structure of the millimeter-wave antenna of claim 7, wherein the arrangement of the intermediate microstrip line radiating elements is such that the area of the intermediate microstrip line radiating elements disposed closer to the millimeter-wave circuit is relatively smaller than the area of the intermediate microstrip line radiating elements farther away from the millimeter-wave circuit. The area of the radiating element of the microstrip line in the middle of the millimeter-wave circuit. The anti-jamming structure of the millimeter-wave antenna of claim 6, wherein at least part of the adjacent intermediate microstrip line radiating elements have the same area. The anti-jamming structure of the millimeter-wave antenna according to claim 7, wherein at least part of the adjacent intermediate microstrip line radiating elements have the same area. The anti-interference structure of the millimeter-wave antenna according to claim 6, wherein the shape of each middle microstrip line radiating element and the end microstrip line radiating element is one selected from rectangle, polygon, or ellipse. The anti-interference structure of the millimeter-wave antenna according to claim 7, wherein the shape of each middle microstrip line radiating element and the end microstrip line radiating element is one selected from a rectangle, a polygon, or an ellipse. The anti-interference structure of the millimeter-wave antenna according to claim 8, wherein the shape of each intermediate microstrip line radiating element and the end microstrip line radiating element is one selected from a rectangle, a polygon, or an ellipse. The anti-interference structure of a millimeter-wave antenna according to claim 10, wherein the shape of each middle microstrip line radiating element and the end microstrip line radiating element is one selected from rectangle, polygon, or ellipse. The anti-jamming structure of the millimeter-wave antenna of claim 12, wherein the shape of each intermediate microstrip line radiating element is a rectangle, the length-width ratio of these intermediate microstrip line radiating elements is 1.2~1.3:1, and the adjacent ones gradually increase 2. The area size ratio of the middle microstrip line radiation unit is 1.1~1.2:1. According to the anti-jamming structure of the millimeter-wave antenna of claim 13, the shape of each intermediate microstrip line radiating element is a rectangle, and the length-width ratio of these intermediate microstrip line radiating elements is 1.2~1.3:1, and the adjacent ones gradually increase 2. The area size ratio of the middle microstrip line radiation unit is 1.1~1.2:1. The anti-jamming structure of the millimeter-wave antenna of claim 14, wherein the shape of each intermediate microstrip line radiating element is a rectangle, the length-width ratio of these intermediate microstrip line radiating elements is 1.2~1.3:1, and the adjacent ones gradually increase 2. The area size ratio of the middle microstrip line radiation unit is 1.1~1.2:1. The anti-jamming structure of the millimeter-wave antenna of claim 15, wherein the shape of each intermediate microstrip line radiating element is a rectangle, the length-width ratio of these intermediate microstrip line radiating elements is 1.2~1.3:1, and the adjacent ones gradually increase 2. The area size ratio of the middle microstrip line radiation unit is 1.1~1.2:1. The anti-jamming structure of the millimeter-wave antenna of claim 12, wherein the shape of the end microstrip line radiating element is a square, the part where the end microstrip line radiating element and the antenna body are connected has a rectangular recess, and the antenna body The end portion passes through the center of the concave notch, and is then connected to the portion near the center of the end microstrip line radiating element. The anti-interference structure of a millimeter-wave antenna according to claim 13, wherein the shape of the end microstrip line radiating element is a square, and the part where the end microstrip line radiating element and the antenna body are connected has a rectangular recess, and the antenna body The end portion passes through the center of the concave notch, and is then connected to the portion near the center of the end microstrip line radiating element. The anti-jamming structure of the millimeter-wave antenna of claim 14, wherein the shape of the end microstrip line radiating element is a square, the part where the end microstrip line radiating element and the antenna body are connected has a rectangular recess, and the antenna body The end portion passes through the center of the concave notch, and is then connected to the portion near the center of the end microstrip line radiating element. The anti-jamming structure of a millimeter-wave antenna according to claim 15, wherein the shape of the end microstrip line radiating element is a square, the part where the end microstrip line radiating element and the antenna body are connected has a rectangular recess, and the antenna body The end portion passes through the center of the concave notch, and is then connected to the portion near the center of the end microstrip line radiating element. The anti-jamming structure of the millimeter-wave antenna of claim 16, wherein the shape of the end microstrip line radiating element is a square, and the part where the end microstrip line radiating element and the antenna body are connected has a rectangular recess, and the antenna body The end portion passes through the center of the concave notch, and is then connected to the portion near the center of the end microstrip line radiating element. The anti-jamming structure of the millimeter-wave antenna of claim 17, wherein the shape of the end microstrip line radiating element is a square, the part where the end microstrip line radiating element and the antenna body are connected has a rectangular recess, and the antenna body The end portion passes through the center of the concave notch, and is then connected to the portion near the center of the end microstrip line radiating element. The anti-interference structure of a millimeter-wave antenna according to claim 18, wherein the shape of the end microstrip line radiating element is square, and the part where the end microstrip line radiating element and the antenna body are connected has A rectangular recess, the end of the antenna body passes through the center of the recess, and is then connected to a portion of the end microstrip line radiating element close to the center. The anti-interference structure of a millimeter-wave antenna according to claim 19, wherein the shape of the end microstrip line radiating element is a square, and the part where the end microstrip line radiating element and the antenna body are connected has a rectangular recess, and the antenna body The end portion passes through the center of the concave notch, and is then connected to the portion near the center of the end microstrip line radiating element.

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