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signal transmission device

A signal transmission and signal technology, applied in connection devices, waveguide devices, circuits, etc., can solve problems affecting filter performance and other issues

Active Publication Date: 2019-01-29
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The current technical solutions used to solve these problems usually have strict requirements on the resonator, or will affect the performance of the filter itself

Method used

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Embodiment Construction

[0023] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0024] In order to solve problem a, the length of the resonant cavities at both ends of the filter is usually reduced, and the subsequent resonant cavities are about half the wavelength of the resonant frequency. However, when the filter has a folded topology and different port types, for example, one port is coaxial and the other port is waveguide type, then the above technical solution will not work for this filter. In this case, it is of...

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Abstract

The invention provides a signal transmission device which comprises a waveguide and a coupled resonator filter. A first coupling window is formed in the waveguide which is configured to transmit received signals; the coupled resonator filter comprises resonant cavities in two lines identical in number, the resonant cavity at the first end is configured to be connected with a coaxial transmission line, the resonant cavity at the second end is provided with a second coupling window formed therein, the resonant cavity is configured to be coupled to the waveguide through the first and second coupling windows, and the resonant cavity at the second end shares one volume with the waveguide. By the above mode, energy transferring (coupling) as required is realized through connection between the coupled resonator filter and the outer filter, and inherent frequency of the resonant cavities cannot be affected.

Description

technical field [0001] The present invention relates to the field of filters, in particular to a signal transmission device having a waveguide connected to a coupled resonator filter. Background technique [0002] Resonant cavity bandpass filters play an important role in communication systems and directly affect communication quality. With the continuous development of wireless communication technology, resonant cavity bandpass filters will be used to realize the transmission of higher power signals. [0003] When a waveguide resonator bandpass filter has a coaxial (TEM mode) port and a waveguide type port, if it is used to transmit microwave signals, there will be some input / output coupling with frequency loading and / or keeping approximately constant related questions. When a so-called folded filter topology is realized, especially with two sets of equal numbers (say 3 each) of resonators, or as figure 1 In the case of the linear topology shown with a coaxial port and a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/00
Inventor 曹琰
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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