Dual-linear polarization feed source horn

A feed horn and dual-line polarization technology, which is applied in the field of feed antennas, can solve the problems of low isolation between two ports, unstable phase center, poor cross-polarization performance, etc., and achieve optimal cross-polarization performance, The effect of stable phase center and high impedance matching

Pending Publication Date: 2020-12-18
CHENGDU T-RAY TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the dual-wire polarized feed horn with OMT structure adopts The form of the junction leads to its complex structure, large size, and poor cross-polarization performance, and the isolation of the two ports is not high, and the phase center is unstable

Method used

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  • Dual-linear polarization feed source horn

Examples

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Embodiment

[0025]Example: Referencefigure 1 The shown dual-line polarized feed horn includes a double-slot corrugated horn unit 100, a square-to-circle transition waveguide 300, and an orthogonal coupler unit 200 that are connected in sequence. The double-slot corrugated horn unit 100 is used to generate an ideal radiation pattern. The orthogonal coupler unit 200 is used to generate two orthogonal polarized waves for feeding, and to improve the cross polarization of the dual-line polarized feed horn.

[0026]Specifically, the double groove corrugated horn unit 100 includes a transmission waveguide 110 and a double groove feed horn 120. The transmission waveguide 110 may be a transmission waveguide component of any corrugated horn in the prior art, and its two ends are respectively connected to the square-to-circle transition waveguide 300 and the double-groove feed horn 120. The operating frequency of the transmission waveguide 110 is generally known, in order to satisfy the main operating mode T...

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Abstract

The embodiment of the invention discloses a dual-linear polarization feed source horn. The horn comprises a dual-groove corrugated horn unit, a square-to-circle transition waveguide and a quadrature coupler unit which are connected in sequence; the double-groove corrugated horn unit comprises a transmission waveguide and a double-groove feed source horn; the transmission waveguide is connected with the square-to-circle transition waveguide and the double-groove feed source horn; the quadrature coupler unit comprises a first input interface, a second input interface, a first Chebyshev transition waveguide connected with the first input interface, a first turning waveguide connected with the first Chebyshev transition waveguide through a first T-shaped junction, and a second Chebyshev transition waveguide connected with the second input interface. The second turning waveguide is connected with the second Chebyshev transition waveguide through a second T-shaped junction; and the first turning waveguide and the second turning waveguide are connected with the square-round transition waveguide through a cross rotary junction. The dual-linear polarization feed source horn is simple in structure, small in size and wide in working bandwidth, and has good cross polarization performance.

Description

Technical field[0001]This application relates to the technical field of feed antennas, in particular to a dual-line polarization feed horn.Background technique[0002]With the development of modern communication systems, dual-line polarized feed horns can use the fundamental mode ports of the orthogonal mode coupler as the receiving and transmitting ends of the signal respectively, thereby realizing the function of a duplexer; polarization diversity can be used Technology to improve the stability of the communication system in a complex electromagnetic environment; at the same time, it can also use multi-polarized information to improve the detectability of radar. However, for the dual-line polarization feed of the waveguide structure, its size is usually large. Due to the self-dispersion effect of the waveguide, the parasitic passband of the waveguide bandpass filter is very close to the designed passband, so it is difficult to obtain a wider operating bandwidth. . The miniaturizatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/02
CPCH01Q13/0208
Inventor 郑楷唐凯佘影罗烜郭凡玉
Owner CHENGDU T-RAY TECH CO LTD
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