High-power harmonic suppression filter based on rectangular waveguide structure

A harmonic suppression and rectangular waveguide technology, which is applied to waveguide devices, electrical components, circuits, etc., can solve the problems of large filter size and limited power capacity, and achieve strong suppression ability, meet application requirements, and compact structure Effect

Active Publication Date: 2021-03-26
SOUTHEAST UNIV
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Problems solved by technology

The step impedance transformer is used to connect the height-reducing waveguide and the standard waveguide, and the stop band can reach above 55GHz, but since the minimum waveguide gap is only 0.649mm, the power handling capacity is limited
In addition, due to the use of multi-order quarter-wavelength impedance converters, the size of the filter is relatively large
For the problem that the gap is too small to affect the power capacity of the filter, in 2010, people such as I.Arregui of Spain's Navarre Public University Public University of Navarre reported a low-pass filter for Ku band har

Method used

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  • High-power harmonic suppression filter based on rectangular waveguide structure
  • High-power harmonic suppression filter based on rectangular waveguide structure
  • High-power harmonic suppression filter based on rectangular waveguide structure

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[0021] Further detailed description of the technical solutions of the present invention will be described below with reference to the drawings:

[0022] The present invention can be implemented in many different forms without considering the embodiments described herein. In contrast, these examples are provided to make the present disclosure and will be fully expressed to those skilled in the art.

[0023] Such as figure 1 As shown, a structural schematic diagram of a high-power harmonic suppression filter proposed by the present invention, the harmonic suppression filter includes,

[0024] Standard input waveguide 1, standard output waveguide 2, first harmonic suppression filter channel 3, the second harmonic suppression filter channel 4 and the metal sheet 5; wherein the metal sheet 5 is provided in the rectangular waveguide intermediate H surface position, and The metal sheet is parallel to the h-surface, the first harmonic suppression filter passage 3 and the second harmonic ...

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Abstract

The invention discloses a high-power harmonic suppression filter based on a rectangular waveguide structure, and the filter comprises a standard input waveguide, a standard output waveguide, a first harmonic suppression filtering channel, a second harmonic suppression filtering channel, and a metal sheet. The metal sheet is arranged on the middle H surface of the rectangular waveguide. The first harmonic suppression filtering channel and the second harmonic suppression filtering channel are completely the same and are arranged on the two sides of the metal sheet in a mirror symmetry mode. Theharmonic suppression filtering channel is realized by adopting a corrugated waveguide low-pass filtering structure, a tiny slot structure is avoided, the power capacity is improved, and the stop bandbandwidth of the filter is improved through mirror symmetry of the harmonic suppression filtering channel. The central axis of a standard input/output waveguide and the central axis of the harmonic suppression filtering channel are located on the same straight line, a second harmonic suppression waveguide filter which is compact in structure and low in loss is achieved within the frequency range of microwaves and millimeter waves, and the second harmonic suppression waveguide filter can be used in a high-power amplifier.

Description

technical field [0001] The invention relates to the technical field of waveguide filters, in particular to a high-power harmonic suppression filter based on a rectangular waveguide structure. Background technique [0002] Satellite communication has the advantages of large coverage, long communication distance, convenient networking, and no environmental restrictions. It is the main means of medium and long-distance communication. With the increasing demand for data, video, communication and control in satellite communication, the output power requirements of transmitters are also getting higher and higher. In order to increase the output power, the high-power amplifier in the transmitter usually works near the P1dB compression point, or even works in a saturated state. This also means that the amplifier produces relatively large harmonic signals, with the second harmonic being the largest. Due to the high output power of the amplifier, even though the harmonic signal is s...

Claims

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Application Information

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IPC IPC(8): H01P1/212
CPCH01P1/212
Inventor 许正彬钱澄徐杰
Owner SOUTHEAST UNIV
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