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Low-temperature 3GHz-9GHz wide-temperature-range ultra-wide-band microwave isolator and application

A 3ghz-9ghz, isolator technology, applied in the field of microwave isolators

Active Publication Date: 2019-02-12
ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic research on ultra-wideband isolators with low-temperature edge-guided mode and wide-temperature range is still blank, so the development of ultra-wide-band isolators with low-temperature and wide-temperature range has become an urgent problem to be solved in the field of low-noise receivers

Method used

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  • Low-temperature 3GHz-9GHz wide-temperature-range ultra-wide-band microwave isolator and application
  • Low-temperature 3GHz-9GHz wide-temperature-range ultra-wide-band microwave isolator and application
  • Low-temperature 3GHz-9GHz wide-temperature-range ultra-wide-band microwave isolator and application

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Embodiment 1

[0034] According to the HINES side-guided mode design theory, based on the 4πM electromagnetic parameters of YAlIG-10A at low temperature 4K s = 1350 Gauss, ε r =13.5, design low temperature side guided mode isolator, internal structure like figure 2 As shown, figure 2 b is figure 2 AA cross-sectional view of a (4:1) (1, gradient conduction band; 2, absorber; 3, dielectric plate; 4, ferrite YAlIG-10A; 5. input and output SMA connectors; 6, isolator base; 7 , SmCo permanent magnet; 8. Isolator cover), side-guided mold center gradient strip conductor 1 has a length of 60mm, ferrite 4 has a length of 56mm, and a thickness of 2mm. The absorption port uses absorber 2 to absorb the reverse isolation signal The low-temperature isolator is formed, the absorber is commercial ECCOSORB MF117 microwave absorbing material, the input and output ports of the isolator use Rogers 6010 dielectric plate 3 as input and output impedance matching, 6 is the aluminum base of the low-temperature isola...

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Abstract

The invention provides a 3GHz-9GHz frequency-band ultra-wide-band microwave isolator working in a low-temperature environment. The 3GHz-9GHz frequency-band ultra-wide-band microwave isolator working in the low-temperature environment comprises ferrite, wherein the ferrite is made from YAlIG-10A, wherein the content of Al2O3 is 2.43%, when the material is 300 K, the saturation magnetization 4piMs equals to 880 Gauss, when the material is 100 K, 4piMs equals to 1300 Gauss, and when the material is 4 K, 4piMs equals to 1350 Gauss. The gap of research of a domestic low-temperature ultra-wide-bandmicrowave isolator is filled, a key device is provided for a front end system of a low-noise radar receiver such as radio astronomy, at the low temperature of 4K-100 K, the relative working bandwidthis 100%, the reverse isolation is high, insertion loss is low, and the requirement of a super-conductive receiver system to the low-temperature ultra-wide-band microwave isolator can be met.

Description

Technical field [0001] The invention belongs to the field of wireless communication, and is specifically a non-reciprocal low-temperature 3GHz-9GHz microwave isolator based on low-temperature ferrite technology and its use in low-noise receiver front-end, satellite communications and superconducting radar receiver systems application. Background technique [0002] Microwave isolator is a passive device based on ferrite material to realize unidirectional transmission. It is widely used in radar receivers and wireless communication fields. It is one of the key components of the receiver front-end system. With the rapid development of aerospace technology, satellite communications are playing an increasingly important role in the national defense and civilian fields. Based on the development of high and low temperature superconducting technology, superconducting radar receiver systems and civil mobile communication base stations are gradually adopting superconducting receivers. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/36H01P1/365H01P1/37H01P1/375H01F1/01
CPCH01F1/01H01P1/362H01P1/365H01P1/37H01P1/375
Inventor 刘洁单文磊
Owner ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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