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Microwave strip transmission line circulator with harmonic suppression function

A strip transmission line and harmonic suppression technology, which is applied to waveguide devices, electrical components, circuits, etc., can solve problems such as device size restrictions, achieve low manufacturing costs, solve device size restrictions, and be simple to use.

Inactive Publication Date: 2011-01-26
SDP TELECOM SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This LPF will cause additional insertion loss, which is also limited by the size of the device

Method used

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  • Microwave strip transmission line circulator with harmonic suppression function
  • Microwave strip transmission line circulator with harmonic suppression function
  • Microwave strip transmission line circulator with harmonic suppression function

Examples

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Embodiment Construction

[0019] Such as figure 1 As shown, the microstrip transmission line circulator with harmonic suppression function includes a pair of permanent magnets 2 for providing magnetic bias, a pair of metal pole pieces 3, a pair of microwave ferrite 4 and a magnetically conductive shell 1, A stripline central conductor 5 is installed between a pair of microwave ferrites 4, and the stripline central conductor 5 is coaxially attached to the surface of the microwave ferrite 4; as figure 2 , the stripline center conductor 5 includes three 120-degree Y-junction resonators 10 and three matching circuits, each matching circuit includes at least one open parallel circuit 8 and an inductive transmission line 9, the open parallel circuit 8 is from the inductive transmission line The near-port end extends, or two open-circuit parallel circuits extend on opposite sides, the open-circuit parallel circuit 8 is I-shaped or L-shaped, and the electrical length of the open-circuit parallel circuit is eq...

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Abstract

The invention provides a microwave strip transmission line circulator with a harmonic suppression function, which comprises a permanent magnet, a metal pole piece, microwave ferrites and an outer case. One strip line central conductor is installed among the microwave ferrites and comprises three 120 DEG Y-junction resonators and three matching circuits, and each matching circuit comprises an open parallel circuit and an inductance type transmission line. The three inductance type transmission lines of the strip line central conductor are respectively connected with an electrical conductor at a port of the circulator radially at the equal intervals of 120 degrees. The microwave strip transmission line circulator is provided with a built-in open parallel circuit with one quarter wavelength and provides the functions of a trap filter to suppress harmonic waves.

Description

technical field [0001] The invention relates to a microwave ferrite device for wireless communication applications, in particular to a strip transmission line circulator / isolator with a built-in open-circuit parallel notch filter for harmonic suppression. Background technique [0002] Microwave ferrite circulator is a unidirectional device with three or more ports, which includes microwave ferrite, stripline center conductor circuit, ground pole piece and permanent magnet. Due to the gyromagnetic effect of the microwave ferrite magnetized by the bias field, the electromagnetic wave energy entering the port 1 circulates to the output of the port 2 and is isolated from the port 3. [0003] Generally, people expect the reverse signal energy in the microwave circulator, the insertion loss and the size to be minimized. At the same time, with the rapid increase in the requirements of the wireless communication market for large-capacity communication systems, the microwave circulat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/387
Inventor 蒋晓马尼古拉·武罗布维奇潘永基
Owner SDP TELECOM SUZHOU
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