Thin Substrate Amplitude-Corrected Quasi-Yagi Planar Horn Antenna
A technology of horn antenna and amplitude correction, which is applied in the direction of antenna, waveguide horn, radiating element structure, etc., can solve the problems of low gain of horn antenna, large patch size, narrow working frequency band, etc., and achieve small feeding loss and inconsistent correction , the effect of compact structure
Inactive Publication Date: 2016-03-23
SOUTHEAST UNIV
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Problems solved by technology
Some existing antennas load a patch in front of the planar horn antenna to improve the radiation of the thin substrate planar horn antenna, but the size of the loaded patch is large and the working frequency band is narrow
In addition, the gain of the traditional substrate-integrated waveguide planar horn antenna is relatively low. The reason is that due to the continuous opening of the horn mouth, the amplitude distribution of the electric field intensity when the electromagnetic wave propagates to the horn aperture surface is uneven, and the radiation directivity and gain are reduced.
At present, methods such as dielectric loading and dielectric prisms have been used to correct the horn aperture field, but these methods can only improve the consistency of the phase distribution, but cannot improve the uniformity of the amplitude distribution, and these phase calibration structures increase the overall structural size of the antenna
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[0020] The implementation adopted by the present invention is: a thin substrate amplitude-corrected quasi-Yagi planar horn antenna includes a microstrip feeder 2, a substrate integrated horn antenna 3 and a plurality of quasi-Yagi antennas 4 arranged on a dielectric substrate 1; The first port 5 of the feeder 2 is the input and output port of the antenna, and the second port 6 of the microstrip feeder 2 is connected to the substrate integrated horn antenna 3; the substrate integrated horn antenna 3 consists of a first metal located on one side of the dielectric substrate 1. The plane 7, the second metal plane 8 located on the other side of the dielectric substrate 1 and the two rows of metallized via horn sidewalls 9 connecting the first metal plane 7 and the second metal plane 8 through the dielectric substrate 1, the substrate integrates the horn The width between the two rows of metalized via-hole horn side walls 9 of the antenna 3 gradually becomes larger, forming a horn-sha...
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The thin substrate amplitude corrected quasi-Yagi planar horn antenna relates to a horn antenna. The antenna includes a microstrip feeder (2), a horn antenna (3) and multiple quasi Yagi antennas (4) on a dielectric substrate (1). The horn antenna (3) consists of a first metal plane (7), a second metal Composed of a plane (8) and two rows of metallized via-hole horn sidewalls (9), the horn antenna (3) has a metallized via-hole array (11) and a dielectric-filled waveguide (14), and the aperture of the horn antenna (3) On the surface (10), each medium-filled waveguide (14) has the same width and is connected with a quasi-Yagi antenna (4) composed of an active vibrator (18) and a passive vibrator (19). Electromagnetic waves can reach the quasi-Yagi antenna with equal amplitude and then radiate, and the polarization of the radiation field is parallel to the substrate. The antenna can be fabricated using a thin substrate and has high gain, low cost and compact structure.
Description
technical field [0001] The invention relates to a horn antenna, in particular to a thin substrate amplitude correction quasi-yagi planar horn antenna. Background technique [0002] Horn antennas are widely used in systems such as satellite communications, ground microwave links, and radio telescopes. However, the huge geometric size of the three-dimensional horn antenna restricts its application and development in planar circuits. In recent years, the proposal and development of substrate-integrated waveguide technology have greatly promoted the development of planar horn antennas. The substrate-integrated waveguide has the advantages of small size, light weight, easy integration and fabrication. The planar substrate-integrated waveguide horn antenna based on the planar substrate-integrated waveguide not only has the characteristics of the horn antenna, but also realizes the miniaturization and light weight of the horn antenna, and is easy to integrate in the microwave and...
Claims
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IPC IPC(8): H01Q13/02H01Q1/36H01Q19/30
Inventor 赵洪新殷晓星傅晓洁
Owner SOUTHEAST UNIV