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Resonators, Filters, Diplexers and Multiplexers

A resonator and filter technology, which is applied in the direction of resonators, waveguide devices, electrical components, etc., can solve the problems of high price, achieve low cost, increase power capacity, and facilitate adjustment

Active Publication Date: 2017-02-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high-performance ceramic materials often contain rare earths, which are expensive due to the global scarcity of rare earth resources

Method used

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  • Resonators, Filters, Diplexers and Multiplexers
  • Resonators, Filters, Diplexers and Multiplexers
  • Resonators, Filters, Diplexers and Multiplexers

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Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0046] see figure 1, is a cross-sectional view of a resonator 100 provided in the first preferred embodiment of the present invention. The resonator 100 includes: a resonant cavity 11 , a cover plate 12 , a resonant tube 13 , and a tuning screw 14 .

[0047] The resonant cavity 11 is a metal cavity, and the resonant cavity 11 can be entirely made of metal material or at least a metallized cavity on the inner surface, which has a resonant cavity 112 and an open end...

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Abstract

The invention provides a resonator, comprising a resonant cavity, a cover plate covering the opening end of the resonant cavity and connected to the resonant cavity, a resonant tube located in the resonant cavity, and a tuning screw, the tuning screw is connected to the cover plate and Extending into the space enclosed by the resonant tube, the resonator also includes a dielectric material with a dielectric constant greater than 1 filled in the resonant cavity, and the dielectric material is filled in the capacitance formed between the top of the resonant tube and the cover plate area. The present invention also provides another resonator, the tuning rod can rotate relative to the dielectric material filled in the resonant cavity, and the contact surface between the tuning rod and the dielectric material is a non-circular structure, so that the tuning rod can rotate relative to the dielectric material , the frequency can be adjusted. The resonator provided by the invention can reduce the conductor loss without increasing the dielectric loss too much, and has low cost. The invention also provides a filter, a duplexer and a multiplexer using the resonator.

Description

technical field [0001] The invention relates to the field of communication equipment, in particular to a resonator, a filter, a duplexer and a multiplexer. Background technique [0002] The development trend of broadband wireless communication requires base station RF front-end duplexers to have smaller volume, greater power capacity, and lower cost while maintaining performance such as loss. Cavity filter is a traditional technology of base station duplexer, with mature technology and low cost. A cavity filter generally includes a cover plate and a plurality of cavities, and each cavity is provided with a plurality of resonant tubes. The function of each cavity is equivalent to an electronic oscillation circuit. When the filter is tuned to the appropriate wavelength of the received signal, the oscillation circuit can be expressed as a parallel oscillation circuit including an inductance part and a capacitance part. By adjusting the inductance part or The capacitor part ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P7/06H01P1/207H01P1/20
CPCH01P7/04H01P1/2136H01P1/207H01P5/12H01P7/06
Inventor 沈振梁丹邓晓毅
Owner HUAWEI TECH CO LTD
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