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Amplitude-phase optimization design method based on multi-feed-source synthesis network

A technology for optimizing design and feed, applied in design optimization/simulation, antennas, electrical components, etc., can solve the problems that affect the performance of antenna beams, cannot guarantee the consistency of excitation coefficients, and do not have equal amplitude of synthetic networks, so as to improve broadband adaptability , reduce optimization complexity and beam performance, and optimize beam design results

Active Publication Date: 2021-01-01
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

However, for this technology, there is currently no effective synthetic network amplitude-phase optimization design method. Without the design of the network topology and the dispersion characteristics of passive devices, it is impossible to ensure that the excitation coefficient is consistent with the design value in the entire working frequency band, which will eventually affect the entire system. Antenna All Beam Performance

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  • Amplitude-phase optimization design method based on multi-feed-source synthesis network
  • Amplitude-phase optimization design method based on multi-feed-source synthesis network
  • Amplitude-phase optimization design method based on multi-feed-source synthesis network

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Embodiment Construction

[0048] The amplitude-phase optimization design method of the multi-feed synthesis network according to the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

[0049] Such as figure 2 , image 3 As shown, the composite multi-beam antenna according to the present invention includes a reflector and a feed array, wherein the feed array is composed of a horn array, a polarizer array and a beam forming network, and the beam forming network is composed of a plurality of passive couplers, phase shifting The device and the waveguide connection structure are jointly constructed.

[0050] refer to figure 1 , figure 2 , image 3 and Figure 4 , the method according to the present invention comprises the following steps:

[0051] (S1) Determine the multi-feed combined multi-beam antenna configuration according to the design index requirements, including the aperture D of the main reflector, the focal length F...

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Abstract

The invention relates to an amplitude-phase optimization design method based on a multi-feed-source synthesis network, and the design method aims at a multi-feed-source synthesis multi-beam antenna feed source array (horn array + polarizer array + synthesis network). Through constraint definition and optimization design of a topological structure, a passive device, a waveguide connection structureand respective optimization variable change ranges of the topological structure, the passive device and the waveguide connection structure of the synthesis network, the contradiction between beam amplitude-phase excitation coefficient setting and beam performance of the multi-feed-source synthesis multi-beam antenna is solved; the design rationality of the synthesis network is satisfied, and thehigh-gain and high-C / I beam performance is realized at the same time.

Description

technical field [0001] The invention belongs to the technical field of space-borne multi-beam antennas, and in particular relates to an amplitude-phase optimization design method based on a multi-feed synthesis network. Background technique [0002] Multi-beam antenna technology, as a commonly used payload technology for large-capacity communication satellites, can provide a large number of high-gain spot beam coverage for the proposed service area, and achieve physical isolation between beams of the same frequency and polarization by using frequency polarization multiplexing technology. However, in order to improve the frequency utilization efficiency and further improve the overall communication capacity of the satellite system, it is necessary to obtain high-gain and high C / I beam performance through antenna design on the basis of increasing the number of frequency reuses. [0003] Since the multi-feed synthesis multi-beam antenna adopts the design concept of feed cluster...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/50H01Q15/14H01Q3/28H01Q3/30G06F30/20
CPCH01Q1/50H01Q15/14H01Q15/141H01Q3/28H01Q3/30G06F30/20
Inventor 龚琦张龙陈俢继王旭东何佳欢万继响梁瑞香
Owner XIAN INSTITUE OF SPACE RADIO TECH
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