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X-band full-band substrate-integrated waveguide circulator

A substrate integrated waveguide and integrated waveguide technology, which is applied in the field of microwave technology, can solve the problems of difficult impedance matching of matching circuits, insufficient performance indicators, and insufficient working bandwidth, achieving large commercial application value, ensuring reliability, and improving The effect of power capacity

Inactive Publication Date: 2016-12-07
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The working bandwidth of the existing X-band circulator is not full enough, and the performance index is not good enough
The main reason is the defect of the waveguide structure itself, as well as the difficulty of impedance matching between the design of the circulator and the matching circuit.

Method used

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  • X-band full-band substrate-integrated waveguide circulator
  • X-band full-band substrate-integrated waveguide circulator
  • X-band full-band substrate-integrated waveguide circulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A more specific example is as follows:

[0041] In this embodiment, a T-shaped SIW circulator with a size of 12×12 square millimeters adopts a triangular ferrite central junction.

[0042] step one:

[0043] a. Substrate integrated waveguide

[0044] Using schema TE in SIW 10 For transmission, the initial value of the SIW structure parameter is:

[0045] a=7.8mm, d=0.4mm, p=0.7mm, h=1mm

[0046] b. Ferrite center junction

[0047] According to the modified SIW circulator radius calculation formula, determine the circumscribed circle radius of the center junction triangle ferrite:

[0048] R f =3.5mm

[0049] Saturation magnetization: 4πM s =2500gauss, the ferromagnetic resonance line width is 60Oe.

[0050] The ferrite height is equal to the height of the dielectric substrate, h=0.635mm;

[0051] The obtained Y-type circulator structure is as follows figure 2 As shown, three substrate-integrated waveguides are connected at 120 degrees to each other around th...

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Abstract

An X-band full-band substrate integrated waveguide circulator relates to microwave technology. The present invention includes a microstrip adapter, a substrate integrated waveguide and a ferrite, and is characterized in that the ferrite is a triangular ferrite, and the radius R of its circumscribed circle satisfies the following formula: c is the speed of light, and f0 is the center Frequency, εrf is the dielectric constant of ferrite, and μe is the equivalent permeability of ferrite. The invention improves the stability of the circular performance of the device, ensures the reliability of the device, and has great commercial application value.

Description

technical field [0001] The present invention relates to microwave technology. Background technique [0002] High-performance X-band circulators play an important role in isolation, protection circuits, and one-way transmission of energy in military active phased array radars and microwave circuit systems, and have a very wide range of applications. However, the transmission methods such as rectangular waveguide and coaxial waveguide used in traditional circulators have defects such as large volume, high quality, high cost, difficulty in integrating with planar circuits, and complicated debugging. Microstrip, stripline and other transmission methods have low quality factors, Disadvantages such as large electromagnetic radiation and large high-frequency insertion loss. Therefore, traditional circulators can no longer meet the development requirements of modern electronic technology: miniaturization, broadband, small insertion loss, and high isolation. Substrate integrated wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/38
Inventor 罗力兢陈良汪晓光邓龙江朱帅黄成陈帅
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA