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Combination Antenna Combining Dipole Antenna and Yagi Antenna
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A technology of dipole antennas and Yagi antennas, applied in the field of combined antennas, can solve problems such as the overall layout of airborne antennas, the increase of antenna systems, and aircraft flight resistance, and achieve improved electromagnetic compatibility, improved isolation, and simple production Effect
Active Publication Date: 2018-12-11
BEIHANG UNIV
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Problems solved by technology
The total number of antennas in the aircraft reaches nearly one hundred. If each antenna is an antenna with a narrow bandwidth, it will cause great trouble to the overall layout of the airborne antenna, and at the same time, it will bring additional problems to the flight of the aircraft itself. resistance
[0003] In the avionics integrated electronic system, several types of antennas may also be integrated into one antenna system, so that the bandwidth of the antenna system will increase, so that the out-of-band coupling between the antennas before is likely to become The in-band coupling between the antennas is eliminated, so the antenna coupling problem is a very important electromagnetic compatibility problem
The advantage of this method is that the operating frequency and spatial layout of the antenna system have little influence on it, and it is more flexible to operate. Reasonable structural optimization will improve the coupling between antenna systems; but the disadvantages are also obvious, from the antenna structure From the point of view, there are various methods that can be changed, that is, the influence on the antenna itself is small and the coupling to other antennas is effectively reduced, that is, it is difficult to find a structurally optimized entry point to change the antenna structure
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Embodiment 1
[0057] The copper clad thickness of the A copper clad configuration 11 and the B copper clad configuration 12 is 0.035 mm. The Yagi antenna selected in Embodiment 1 is as figure 1 As shown, it adopts the HD-297YAG10 model Yagi antenna of Hengda Microwave Company, the working frequency is 297MHz, the gain is 10dB, and the beam width is 30°.
[0058] The dimensions of the dipole antenna are as follows:
[0059] a 13 =500mm, b 13 =440mm;
[0060] d 1-2 =1000mm;
[0061] b 11A =b 12上 =7.5mm;
[0062] a 11A =a 12A =250mm;
[0063] a 11B =a 12B =10mm
[0064] b 11B =b 12B =120mm;
[0065] b 12下 = 30mm.
[0066] The performance evaluation of Embodiment 1 is performed by using S parameters: the dotted line in the figure represents the traditional antenna, and the solid line represents the designed antenna of Embodiment 1.
[0067] see Figure 3A As shown, the S11 parameter represents the working performance of the Yagi antenna 2, and its performance at the working...
Embodiment 2
[0074] The copper clad thickness of the A copper clad configuration 11 and the B copper clad configuration 12 is 0.035 mm. The Yagi antenna selected in Embodiment 2 is as figure 2 As shown, it adopts the HD-40YAG5 model Yagi antenna of Hengda Microwave Company, the working frequency is 406MHz, the gain is 10dB, and the beam width is 30°.
[0075] The dimensions of the dipole antenna are as follows:
[0076] a 13 =500mm, b 13 =440mm;
[0077] d 1-2 =1000mm;
[0078] b 11A =b 12上 =7.5mm;
[0079] a 11A =a 12A =250mm;
[0080] a 11B =a 12B =10mm
[0081] b 11B =b 12B =120mm;
[0082] b 12下 = 30mm.
[0083] The performance evaluation of Embodiment 2 is performed using S parameters: the dotted line in the figure represents the traditional antenna, and the solid line represents the designed antenna of Embodiment 2.
[0084] The S11 parameter represents the working performance of the Yagi antenna 20, and its performance at the working frequency of 406 MHz is basi...
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Abstract
The invention discloses a composite combined antenna of a dipole antenna and a yagi-type antenna with a coupling inhibition narrowband. The composite combined antenna comprises a dipole antenna unit, a yagi-type antenna unit and inductors, wherein the inductors are arranged in gaps of active oscillators of the yagi-type antenna unit; the dipole antenna comprises a dielectric plate, an A copper clad configuration and a B copper clad configuration; the A copper clad configuration is manufactured on an A panel of the dielectric plate by employing a copper cladding technology; and the B copper clad configuration is manufactured on a B panel of the dielectric plate by employing the copper cladding technology. According to the combined antenna, the inductors are loaded on the active oscillators of the yagi-type antenna, so that the isolation degree of the dipole antenna and the yagi-type antenna is improved and out-of-band coupling between the dipole antenna and the yagi-type antenna is inhibited.
Description
technical field [0001] The present invention relates to a combination antenna, more particularly, it refers to a combination antenna composed of a dipole antenna with a narrow coupling suppression band and a Yagi antenna. Background technique [0002] The ideal airborne antenna distribution is that in a complex electromagnetic environment, the antenna or antenna system can not affect the radiation performance of other coexisting antennas, and its own performance will not be greatly affected. But to achieve this level, there are several problems that need to be solved: First, there are many types of antennas on the aircraft, and the working frequency bands cover a wide range and overlap with each other. When receiving and radiating, the antennas are inevitably affected It eliminates the in-band effects caused by the work of other antennas in the same frequency band, and also has the out-of-band effects caused by the work of antennas working in different frequency bands. The ...
Claims
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Application Information
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