Broadband dual-linearly-polarized or dual-circularly-polarized feed source

A dual-line polarization and dual-circular polarization technology, applied in the field of broadband feeds, can solve problems such as large impedance changes, complex feed networks, and insufficiently wide coverage frequency ranges, and reduce antenna aperture and feed sources Quantity effect

Active Publication Date: 2015-04-08
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One is direct feeding through coaxial cables. The advantage of this feeding is that it is simple in structure and easy to operate. However, due to the large impedance change with frequency, it cannot be used in high-frequency feeding.
The other is the feed network that has been used abroad. This feed network feeds power through 8 or 4 feed baluns. The feed network is more complicated, the cost of the back-end low-noise amplifier is high, and the phase consistency is difficult to guarantee. And the coverage frequency range is not wide enough, which is stated in the patent CN103151602

Method used

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  • Broadband dual-linearly-polarized or dual-circularly-polarized feed source
  • Broadband dual-linearly-polarized or dual-circularly-polarized feed source
  • Broadband dual-linearly-polarized or dual-circularly-polarized feed source

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Embodiment Construction

[0033] Below, combine Figure 1 to Figure 9 The present invention is further described.

[0034] The present invention includes a radiation oscillator 1 , a feed network 2 and a circular polarization bridge 7 . Radiating oscillators 1 are two groups and arranged orthogonally in a V shape. The upper pin 11a of the vertically polarized radiation oscillator 11 is connected to the upper port 21a of the vertically polarized impedance matching printed board 21. The vertically polarized radiation oscillator 11 The lower pin 11b is correspondingly connected to the lower port 21b of the vertically polarized impedance matching printed board 21, and the vertically polarized impedance matched printed board 21 connects the wide end 21c of the metal microstrip line with a 90-degree gradient bend to the circularly polarized bridge 7 connected to the vertical polarization port 7a; the left pin 12a of the horizontal polarization radiation oscillator 12 is connected to the left port 22a of the...

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Abstract

The invention discloses a broadband dual-linearly-polarized or dual-circularly-polarized feed source in the fields of wireless communication and radio astronomy. The broadband feed source consists of four groups of radiation oscillators, 2 impedance-matched printed boards and a circularly-polarized electric bridge, wherein the radiation oscillators are log periodic dipole arrays, and are connected with the two impedance-matched printed boards which are orthogonally arranged, so that impedance values of the wide ends of metal microstrip lines of the impedance-matched printed boards are 1 / 4 of impedance values between left and right pins of the radiation oscillators, so that feeding is simplified, and high performance is achieved. The broadband feed source is simple and compact in structure, low in feed loss and machining cost, high in feed efficiency and particularly applicable to a feed network of a feed source or antenna working under a broadband dual-linear-polarization or dual-circular-polarization application condition.

Description

technical field [0001] The invention relates to a broadband feed source in the technical fields of communication, broadband direction finding, remote measurement, remote sensing and radio astronomy. Background technique [0002] The broadband feed can greatly reduce the number of feeds and the aperture of the antenna, and has technical characteristics such as multi-function, multi-purpose, and comprehensive integration. It is precisely because of these advantages that it has a wide range of demands in the fields of military, civilian and astronomy. [0003] At present, there are mainly the following types of broadband feeds: logarithmic spiral feeds, traveling wave resonance (TWR) feeds, logarithmic periodic feeds, SINUOUS feeds, etc. However, these types of feed applications have certain limitations, which are reflected in: [0004] Logarithmic spiral feed: broadband reception in one direction, unable to achieve simultaneous reception in two directions; [0005] Travelin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q5/50H01Q1/36H01Q21/00
Inventor 牛传峰刘超耿京朝杨国栋赵东贺孙良董晓娟蒋博吴旭何其洪马万垒王志伟张廷恒
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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