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Millimeter wave filter circuit

A filter, millimeter wave technology, applied in electrical components, frequency-independent attenuators, multi-terminal-to-network, etc., to achieve low insertion loss and improve isolation.

Inactive Publication Date: 2021-03-12
XIAN CREATION KEJI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, today's millimeter-wave integrated switches mostly use PIN diode switches or solid-state FET switches, and in order to pursue high isolation, they often use multiple switches in parallel, but the increase in the number of switches will bring excessive insertion loss

Method used

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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with specific examples, but the embodiments of the present invention are not limited thereto.

[0036] In order to achieve the purpose of low insertion loss and high isolation when the circuit is switched between two working states, an embodiment of the present invention provides a millimeter wave filter circuit. Next, the millimeter wave filter circuit is introduced. figure 1 A schematic structural diagram of a millimeter wave filter circuit provided by an embodiment of the present invention.

[0037] see figure 1 , the millimeter wave filter circuit provided by the embodiment of the present invention includes:

[0038] The first switch unit is used to receive radio frequency signals, including a transformer circuit and a transistor control circuit, using the transformer circuit to realize port isolation, and using load switching technology to adjust the load;

[0039] a filter, configure...

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Abstract

The invention discloses a millimeter wave filter circuit, and the circuit comprises a first switch unit used for receiving a radio frequency signal, wherein the first switch unit comprises a transformer circuit and a transistor control circuit; a filter which is used for filtering the radio frequency signal output by the first switch unit and outputting a filtered radio frequency signal; a secondswitch unit which is used for receiving the filtered radio frequency signal and comprises a transformer circuit and a transistor control circuit; a detector which is used for converting the radio frequency signal output by the second switch unit into an analog voltage signal; an A / D converter which is used for converting the analog voltage signal into a digital signal; and a control module which is used for receiving the digital signal and selecting the output port of the first switch unit and the input port of the second switch unit based on the digital signal. The millimeter wave filter circuit provided by the invention realizes the circuit performance of low insertion loss and high isolation in two different working states.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a millimeter wave filter circuit. Background technique [0002] A filter is a frequency selective device. Millimeter-wave filters are an extremely important part of millimeter-wave communication technology and an indispensable device in millimeter-wave systems. The quality of their performance often directly affects the quality of the entire communication system. In recent years, with the rapid development of millimeter wave technology, the demand for such devices in the fields of communication, radar, remote sensing and radio astronomy has been increasing. [0003] At present, millimeter-wave wireless communication systems mostly send and receive communications between different frequencies and different models. Switches are needed to switch channels within the system. Switching devices are widely used in the field of wireless communications. Insertion loss an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H11/24
CPCH03H11/245
Inventor 李苗
Owner XIAN CREATION KEJI CO LTD
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