Base-plate integration waveguide harmonic oscillation type gap array circular-polarization antenna

A substrate-integrated waveguide and circularly polarized antenna technology, applied to slot antennas, antenna unit combinations with different polarization directions, antennas, etc., can solve the problems of small power capacity, open structure, inconvenient sealing, etc. Good side lobe suppression ratio and high precision

Inactive Publication Date: 2008-07-30
SOUTHEAST UNIV
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Problems solved by technology

At the same time, there are also problems such as small power capacity, large loss, open structure and inconvenient sealing, etc.

Method used

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  • Base-plate integration waveguide harmonic oscillation type gap array circular-polarization antenna

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Embodiment Construction

[0015] The substrate-integrated waveguide resonant slot array circularly polarized antenna of the present invention (as shown in Figure 1) comprises a dielectric substrate, a substrate-integrated waveguide 1 on the dielectric substrate (the substrate-integrated waveguide 1 is made of metal on both sides 11 and the area enclosed by the metallized through-hole array 12 that runs through the front and back metal surfaces), the part connected to the circularly polarized antenna and the test terminal is a microstrip adapter 2, and the microstrip adapter 2 The upper part of the directional coupler 3 is connected to the input end 31, the isolation end 34, the input end 31, the isolation end 34 are connected to the straight-through end 32, the coupling end 33 through the middle coupling section 35, and the middle coupling section 35 adjusts the straight-through end 32 and the coupling end 33 The upper parts of the straight-through end 32 and the coupling end 33 are respectively connect...

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Abstract

A substrate-integrated waveguide resonant slit array circular polarization antenna relates to a circular polarization antenna used in wireless communication fields such as satellite communication, electronic reconnaissance and countermeasure and radar. The circular polarization antenna comprises a microstrip adapter (2) below the front surface of the antenna, and a directional coupler (3) with an input terminal (31) and an isolation terminal (34) connected with the upper portion of the microstrip adapter (2), wherein the input terminal and the isolation terminal (34) are connected with a straight through terminal (32) and a coupling terminal (33) through a middle coupling segment (35); the middle coupling segment (35) is used for adjusting the power distribution of the straight through terminal (32) and the coupling terminal (33); the upper portions of the straight through terminal (32) and the coupling terminal are respectively connected with two left and right symmetrical power dividers (4) with unequal crossed phases; the eight branches of the power dividers (4) are connected with eight radiation waveguides (5); and a first slit array (61) and a second slit array (62) symmetrical to each other and with orthogonal radiation fields are etched in the top metal layer of each branch waveguide at the top eight radiation waveguides.

Description

technical field [0001] The invention relates to a circularly polarized antenna applicable to wireless communication fields such as satellite communication, electronic reconnaissance and countermeasures, and radar. Processed by PCB technology. Background technique [0002] The traditional metal rectangular waveguide has the advantages of high quality factor and high power capacity. Microwave and millimeter wave devices based on traditional waveguides have quite good performance, so they are widely used in various fields of wireless communication. The slot antenna based on metal rectangular waveguide has the advantages of large radiation power, high gain, low cross-polarization level, and easy control of lobe pattern. However, its bulky size, high cost, and complicated processing technology limit its application in modern communication systems, especially difficult to integrate with modern planar circuits. Therefore, a variety of transmission line technologies suitable for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/24H01Q1/38H01Q13/00H01Q13/10
Inventor 洪伟陈志君蒯振起陈继新汤红军余晨曾志雄
Owner SOUTHEAST UNIV
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