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TM mode dielectric resonator for controlling second harmonics migration

A dielectric resonator and second harmonic technology, applied in resonators, waveguide devices, electrical components, etc., can solve the problems of affecting the working and use of communication equipment, increasing energy loss, reducing power factor, etc., and achieving good out-of-band suppression. indicators, improve the power factor, reduce the effect of energy loss

Active Publication Date: 2014-09-10
江苏灿勤科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the parasitic passband of the filter or duplexer made of it is too close to the main frequency passband, causing filter waveform distortion, increasing energy loss, resulting in a decrease in power factor, affecting the normal operation and use of communication equipment, and restricting fast develop

Method used

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  • TM mode dielectric resonator for controlling second harmonics migration
  • TM mode dielectric resonator for controlling second harmonics migration
  • TM mode dielectric resonator for controlling second harmonics migration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] Embodiment: a kind of TM mode dielectric resonator that controls second harmonic migration,

[0021] as attached figure 1 As shown, the dielectric resonator is a solid stepped cylinder 1 with a T-shaped longitudinal section, one end of the solid stepped cylinder 1 is coated with a metal layer or both ends are coated with a metal layer 2, and the upper part of the solid stepped cylinder 1 is The first solid cylinder 3, the bottom of the solid step cylinder is the second solid cylinder 4, the diameter of the first solid cylinder is greater than the diameter of the second solid cylinder, the junction of the first solid cylinder and the second solid cylinder is a chamfered arc area 5, the second solid cylinder The height of two solid cylinders is greater than 4.5mm.

[0022] The solid stepped cylinder is composed of calcium carbonate, aluminum oxide, neodymium oxide, and titanium dioxide, and the composition has a relative permittivity of 45, Q ? It is made of 45,000 diel...

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PUM

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Abstract

The invention discloses a TM mode dielectric resonator for controlling second harmonics migration. The dielectric resonator is a solid step cylinder with a T-shaped lengthwise section, one end of the solid step cylinder is coated with a metal layer or two ends of the solid step cylinder are coated with metal layers, the upper part of the solid step cylinder is a first solid cylinder, the lower part of the solid step cylinder is provided with a second solid cylinder, the diameter of the first solid cylinder is larger than that of the second solid cylinder, the junction of the first solid cylinder and the second solid cylinder is provided with a chamfering arc area, and the height of the second solid cylinder is more than 4.5mm. The TM mode dielectric resonator is capable of controlling second harmonics migration, and inhibiting second harmonics in a position far away from a main frequency band.

Description

technical field [0001] The invention relates to a microwave dielectric resonator and belongs to the field of reciprocal microwave devices. Background technique [0002] With the announcement of my country's 3G standard, the deployment of a new round of wireless communication infrastructure has been fully rolled out. Among them, base station deployment is one of the important topics. In the current mobile communication, the radio frequency part of the mobile communication base station uses filters and duplex Most resonators use silver-plated metal coaxial cavity, because the Q value of this coaxial cavity is limited (Q u About 3500), and the temperature stability of the resonant frequency is very poor (determined by the inherently large thermal expansion coefficient of the metal cavity), in order to prevent the frequency from drifting greatly with the change of the ambient temperature, the entire base station must work in a constant temperature environment , resulting in bulk...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P7/10
Inventor 朱田中
Owner 江苏灿勤科技股份有限公司
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