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Ka frequency range miniaturization broadband multimode auto-tracking feed source network

A wide-band, self-tracking technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve the problems of immature design of millimeter-band couplers, ensure differential-mode coupling and sum-mode suppression, achieve expansion, Achieving the effect of frequency bandwidth

Active Publication Date: 2015-05-27
BEIJING RES INST OF TELEMETRY +1
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  • Claims
  • Application Information

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Problems solved by technology

Through a lot of research by scholars at home and abroad, the design theory of TE21 couplers in the Ku and below frequency bands has been relatively mature, but the design of millimeter-wave couplers is still immature, and there is no ready-made method for reference.

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  • Ka frequency range miniaturization broadband multimode auto-tracking feed source network
  • Ka frequency range miniaturization broadband multimode auto-tracking feed source network
  • Ka frequency range miniaturization broadband multimode auto-tracking feed source network

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0032] Such as Figure 1a Shown is a schematic diagram of the structure of the feed network of the present invention, the Ka frequency band miniaturized broadband multi-mode self-tracking feed network of the present invention includes a four-arm circular polarization TE21 coupler 1, a circular polarizer 2, the first magic T3, Second magic T4 and 90° bridge 5. Four-arm circular polarization TE21 coupler 1 and circular polarizer 2 form the feed source and network, and four-arm circular polarization TE21 coupler 1, first magic T3, second magic T4, and 90° electric bridge 5 form the feed source difference network.

[0033] The four-arm circular polarization TE21 coupler 1 is composed of four rectangular waveguides 6, 7, 8, 9 and a central circular waveguide 10, and the central circular waveguide 10 is connected with the circular polarizer 2 to gene...

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Abstract

The invention relates to a Ka frequency range miniaturization broadband multimode auto-tracking feed source network. Two polarization degenerate modes of TE21 mode transmitted by center circular waveguide are coupled to four rectangular waveguide by adopting a four-arm circular polarization TE21 coupler. Two four-way polarization degenerate modes of the TE21 mode is combined into two two-way polarization degenerate modes of the TE21 mode by two broadband magic Ts. A left-handed or right-handed circular polarization difference mode is output by a broadband 90-degree electrical bridge. The TE21 coupler center circular waveguide is capable of simultaneously transmitting a TE11 mode. Due to the fact that the TE21 coupler is connected with a broadband circular polarization machine, and two polarization modes of a signal are respectively output from two ports of the broadband circular polarization machine, the Ka frequency range miniaturization broadband multimode auto-tracking feed source network is capable of simultaneously receiving a signal of double-circular polarization and a difference signal, and thereby the auto-tracking function is realized. The Ka frequency range miniaturization broadband multimode auto-tracking feed source network has the advantages of not only simplifying composition of the feed source network, reducing the volume and the weight of the whole device, but also reducing network construction, saving feed source cost and broadening working band of the feed source network.

Description

technical field [0001] The invention relates to a Ka-band miniaturized wide-band self-tracking antenna feed source network, which belongs to the technical field of antennas. Background technique [0002] Self-tracking feed is the core component of measurement and control, communication, radar antenna feed system. The self-tracking feed network is implemented in two ways: multi-channel and differential mode; the multi-channel method uses multiple feed units to form a differential mode pattern through the differential network. The main disadvantages of the multi-channel differential mode feed are complicated composition and large size. (Large radiation shielding); the differential mode method uses the specific high-order mode of the waveguide, couples the high-order mode through the coupler, and then synthesizes the differential mode pattern through the difference network. The biggest advantage of the differential mode mode is that it reduces the feed source The number of uni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/16
Inventor 黄昕寅刘越东赵波刘昊
Owner BEIJING RES INST OF TELEMETRY
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