TWI773010B - Radiated energy distribution structure of millimeter-wave antenna - Google Patents

Abstract

A radiated energy uniform distribution structure of a millimeter-wave antenna, comprising 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 An assembly, one end of the antenna body can be connected to a millimeter-wave circuit that can generate millimeter waves, the microstrip line radiation assembly consists of a plurality of intermediate microstrip line radiation units arranged at intervals in the middle section of the antenna body, and a tail of the antenna body. The area of these intermediate microstrip line radiation units gradually increases from one end close to the millimeter-wave circuit toward the other end, so that the distribution of the external radiated energy of each intermediate microstrip line radiation unit tends to on average.

Description

Radiated energy distribution structure of millimeter-wave antenna

The present invention relates to a radiated energy uniform distribution structure of a millimeter-wave antenna, especially an antenna structure with better gain that can effectively increase the millimeter-wave action distance.

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.

It can be seen from the above that in the process of millimeter-wave energy being radiated through the comb-shaped antenna element 2, the energy radiated by the microstrip line radiation units 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 a radiated energy uniform distribution structure of 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 a long strip The antenna body, and a microstrip line radiating element arranged on the antenna body, the antenna body is connected to a millimeter-wave circuit on a circuit board at one end, and the microstrip line radiating element is composed of a plurality of It consists of intermediate microstrip line radiating units arranged at intervals in the middle section of the antenna body, and an end microstrip line radiating unit disposed at one end of the antenna body away from the millimeter-wave circuit, and the intermediate microstrip line radiating units respectively have Areas of different sizes, and the arrangement of the sizes and areas, are gradually increased from the intermediate microstrip line radiating element disposed near one end of the millimeter-wave circuit toward the intermediate microstrip line radiating element at the other end, so that each intermediate microstrip line The radiated energy of the radiating element tends to be evenly distributed, thereby improving the overall gain of the comb-shaped antenna element.

Another object of the present invention is to provide a radiated energy distribution structure of 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 The resonance point of the equal middle microstrip line radiating element can be kept close to 76.5GHz, and the size ratio of the two adjacent intermediate microstrip line radiating elements is set in the range of 1.1~1.2:1, so as to be more efficient Radiate millimeter-wave energy outward from the ground.

Another object of the present invention is to provide a radiated energy distribution structure of a millimeter-wave antenna, wherein each middle microstrip line radiating element and the end microstrip line radiating element are respectively arranged on the antenna body at a skew angle and spaced apart , which can achieve the effect of reducing the opposite interference; and the part where the end microstrip line radiating element is connected with the antenna body has a rectangular concave notch, which can reduce the reflection coefficient of the end microstrip line radiating element.

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 the end microstrip line radiating element at one end of the antenna body away from the millimeter-wave circuit, and the area of the middle microstrip line radiating element located at the end of the antenna body relatively far from the millimeter-wave circuit is not smaller than the end relatively close to the millimeter-wave circuit. The area of the middle microstrip line radiating element.

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 the intermediate microstrip line farther away from the millimeter-wave circuit. The area of the radiating element.

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 intermediate microstrip line radiation units are rectangular, and the ratio of length to width is 1.2-1.3:1.

According to the above structure, the area ratio of the adjacent two gradually increasing intermediate microstrip line radiation units is 1.1-1.2:1.

According to the above structure, the shape of the end microstrip line radiation unit is a square.

According to the above structure, the part where the end microstrip line radiating element is connected with the antenna body has a rectangular recess.

According to the above structure, each of the middle microstrip line radiating units and the end microstrip line radiating units are arranged on the antenna body in the same direction and at intervals of the skew angle.

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

According to the above structure, each of the middle microstrip line radiating elements is respectively connected to the antenna body at its upper end angle.

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 FIG. 2, 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 composed of at least one comb-shaped antenna element 1 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, and in practical application , the transmitting array antenna A1 and/or the receiving array antenna A2 can adjust the number of the comb-shaped antenna elements 1 respectively according to the required millimeter-wave transmission intensity and receiving sensitivity; wherein each of the comb-shaped antenna elements 1 has a An elongated antenna body 11, and a microstrip line radiating element 12 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 radiates The component 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 at intervals in sequence, and an end microstrip line disposed at an end of the antenna body 11 away from the millimeter-wave circuit C1 The line radiation unit 124 is formed.

In this embodiment, the intermediate microstrip line radiation units 121 , 122 , and 123 respectively have different sizes and areas, and their arrangement is to be located at the intermediate microstrip line radiation unit closer to one end of the millimeter-wave circuits C1 The area of 121 is set to be relatively small, and the areas of the intermediate microstrip line radiation units 122, 123... which are gradually away from the millimeter-wave circuit C1 and set toward the other end are set to be relatively gradually increased; each of the intermediate microstrip line radiation units 121, 122 , 123 and the end microstrip line radiation unit 124 may be rectangular, polygonal or elliptical in shape.

Referring to FIG. 3, a preferred embodiment of the comb-shaped antenna element 1 is disclosed, wherein the middle microstrip line radiating element 121 is a rectangular structure, the length of the long side is L121, and the length of the short side is L121. is W121, when the ratio of the long side length L121 to the short side length W121 is 1.2~1.3:1, the resonance point of the middle microstrip line radiating element 121 is kept at a position close to 76.5GHz, and the adjacent next position The middle microstrip line radiating unit 122 is also a similar rectangular structure, and has a fixed spacing distance Y, its long side length is L122, the short side length is W122, and the ratio of the long side length L122 to the short side length W122 is also is 1.2~1.3:1; at the same time, the area (long side length L122*short side length W122) of the middle microstrip line radiation unit 122 in the next position and the area of the middle microstrip line radiation unit 121 in the original position (long side length The ratio of L121*short side length W121) 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 their length-width ratio is limited to the range of 1.2~1.3:1. The adjacent two gradually increasing intermediate microstrip line radiation units 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 middle microstrip line radiation 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 practical application, the design in which the intermediate microstrip line radiating elements 121 , 122 , and 123 are respectively connected to the antenna body 11 by only their upper corners can be used, and the intermediate microstrip line radiating elements 121 , 122 and 123 form a skew angle in the same direction and are connected at intervals, so as to achieve the effect of reducing the opposite interference. The skew angle shown in the figure is 45 degrees.

Referring to FIG. 4, another preferred embodiment of the comb-shaped antenna element 1 is disclosed, wherein the end microstrip line radiation unit 124 is rectangular (square), and the end microstrip line radiation unit The part where 124 connects with the antenna body 11 has a rectangular (square) recess 1241. The end of the antenna body 11 passes through the center of the recess 1241, and is connected to the end near the center of the microstrip line radiating element 124, The reflection coefficient of the end microstrip line radiating element 124 can be reduced by the design of the concave notch 1241 being fed from the periphery; therefore, when the middle microstrip line radiating elements 121, 122 and 123 respectively radiate energy to the outside, the last remaining When the energy is transmitted to the end microstrip line radiating element 124 through the antenna body 11 , the residual energy can be completely spread outward by the end microstrip line radiating element 124 spreading and spreading evenly from the part near the center. Radiation to further boost the overall gain.

In practical application, the antenna body 11 may be provided with a bent portion 111 at one end close to the end microstrip line radiating element 124 , so that the end microstrip line radiating element 124 can be connected to the end microstrip line radiating element 124 through the bent portion 111 . The aforementioned intermediate microstrip line radiation units 121 , 122 , 123 are arranged at the same skew angle, so as to further reduce the counter-interference.

Referring to FIG. 5, it can be seen that the structure of the millimeter-wave antenna A0 according to the second embodiment of the present invention includes: a transmitting array antenna A10 composed of at least one comb-shaped antenna element 10 and/or a transmission array antenna A10 composed of at least one comb-shaped antenna element 10 In this embodiment, each of the comb-shaped antenna elements 10 respectively has a long antenna body 11 and a microstrip line radiating element 120 disposed on the antenna body 11. , the antenna body 11 is connected to a millimeter-wave circuit C1 on a circuit board C at one end, and the microstrip line radiating element 120 is composed of a plurality of intermediate microstrip line radiating elements arranged in the middle of the antenna body 11 at intervals 121 , 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 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, at least partially have the same area; in the embodiment shown in FIG. 5, the microstrip line radiating element 120 has two adjacent intermediate microstrips that are closest to the millimeter-wave circuit C1 with the same minimum area The line radiating element 121, a largest-area middle microstrip line radiating element 123, is 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 sub-large area and adjacent are located in the antenna body 11. The antenna body 11 is located between the smallest-area intermediate microstrip line radiating element 121 and the largest-area intermediate microstrip line radiating element 123, thereby forming another arrangement that conforms to the gradual increase and decrease of each intermediate microstrip line radiating element according to the area. , and the combined structure of the comb-shaped antenna element 10 with similar functions.

Referring to FIG. 6, it can be seen that the structure of the millimeter-wave antenna A00 according to the third embodiment of the present invention includes: a transmitting array antenna A100 composed of at least one comb-shaped antenna element 100 and/or a transmission array antenna A100 composed of at least one comb-shaped antenna element 100 In this embodiment, each of the comb-shaped antenna elements 100 has an elongated antenna body 11 and a microstrip line radiating element 1200 disposed on the antenna body 11, respectively. , the antenna body 11 is connected to the millimeter-wave circuit C1 on a circuit board C at one end, and the microstrip line radiating element 1200 is composed of a plurality of intermediate microstrip line radiating elements arranged in the middle of the antenna body 11 at intervals 121 , 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 third embodiment and the comb-shaped antenna element 1 of the first embodiment is that the microstrip line radiating elements 121 and 122 of the microstrip line radiating element 1200 are in the middle. , 123 and the end microstrip line radiating element 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 .

Based on the above, the radiated energy uniform distribution structure of the millimeter wave antenna of the present invention can indeed achieve the effect of increasing the millimeter wave action distance and better anti-interference ability by increasing the gain of each comb antenna element, which is a novelty and For a progressive invention, an application for an invention patent shall be filed in accordance with the law; however, the content of the above description is only the description of the preferred embodiment of the present invention, and any changes, modifications, alterations or equivalent replacements extended by the technical means and scope of the present invention are mentioned. All of them should also fall within the scope of the patent application of the present invention.

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 (17)

A radiated energy uniform distribution structure of 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 radiation component disposed on the antenna body, the 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 It is composed of the end microstrip line radiation unit at one end of the millimeter wave circuit, and the middle microstrip line radiation units have at least one middle microstrip line radiation unit with the largest area located at one end relatively far away from the millimeter wave circuit, and at least one located relatively close to the end microstrip line radiation unit. The smallest-area middle microstrip line radiating element at one end of the millimeter-wave circuit, the largest-area middle microstrip line radiating element is larger than the smallest-area middle microstrip line radiating element, and is located on the antenna body relatively far from the millimeter-wave circuit The area of the middle microstrip line radiation unit at one end is not less than the area of the middle microstrip line radiation unit relatively close to one end of the millimeter-wave circuit. According to the radiated energy uniform distribution structure of the millimeter-wave antenna of claim 1, the arrangement of the intermediate microstrip line radiating elements is determined by the area of the intermediate microstrip line radiating elements located closer to the millimeter-wave circuit, which is relatively smaller than The area of the radiating element of the middle microstrip line that is farther from the millimeter-wave circuit. The radiation energy uniform distribution structure of the millimeter-wave antenna according to claim 1, wherein at least part of the adjacent intermediate microstrip line radiation elements have the same area. The radiation energy uniform distribution structure of the millimeter-wave antenna according to claim 1, 2 or 3, wherein the shape of each middle microstrip line radiating element and the end microstrip line radiating element is selected from the shapes of rectangle, polygon and ellipse. one. According to the radiated energy uniform distribution structure of the millimeter-wave antenna of claim 4, the intermediate microstrip line radiating elements are rectangular, and the ratio of length to width is 1.2~1.3:1. For the radiated energy uniform distribution structure of the millimeter-wave antenna according to claim 1, 2 or 3, the area ratio of the two adjacent intermediate microstrip line radiating elements is 1.1~1.2:1. The radiation energy uniform distribution structure of the millimeter-wave antenna according to claim 4, wherein the shape of the end microstrip line radiation unit is a square. The radiation energy uniform distribution structure of the millimeter-wave antenna according to claim 1, 2 or 3, wherein the part where the end microstrip line radiating element is connected to the antenna body has a rectangular recess. The radiation energy uniform distribution structure of the millimeter-wave antenna of claim 7, wherein the part where the end microstrip line radiating element is connected to the antenna body has a rectangular concave notch. According to the radiated energy uniform distribution structure of the millimeter-wave antenna of claim 1, 2 or 3, each of the middle microstrip line radiating elements and the end microstrip line radiating elements are arranged on the antenna body with the same direction and skew angle interval. superior. According to the radiated energy uniform distribution structure of the millimeter wave antenna of claim 6, each of the middle microstrip line radiating elements and the end microstrip line radiating elements are arranged on the antenna body with the same direction and skew angle at intervals. According to the radiated energy uniform distribution structure of the millimeter wave antenna of claim 10, the skew angle between each middle microstrip line radiating element and the end microstrip line radiating element and the antenna body is 45 degrees. According to the radiated energy uniform distribution structure of the millimeter-wave antenna of claim 11, the skew angle between each middle microstrip line radiating element and the end microstrip line radiating element and the antenna body is 45 degrees. According to the radiated energy uniform distribution structure of the millimeter-wave antenna of claim 10, each intermediate microstrip line radiating element is connected to the antenna body with its upper end angle respectively. The radiation energy uniform distribution structure of the millimeter-wave antenna of claim 11, wherein each intermediate microstrip line radiating element is connected to the antenna body at its upper end angle respectively. According to the radiated energy uniform distribution structure of the millimeter wave antenna of claim 12, each intermediate microstrip line radiating element is connected to the antenna body with its upper end angle respectively. According to the radiated energy uniform distribution structure of the millimeter-wave antenna of claim 13, each intermediate microstrip line radiating element is connected to the antenna body at its upper end angle respectively.

Images