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A multi-channel broadband millimeter-wave mixing system

A millimeter-wave, multi-channel technology, applied in the transmission system, multi-frequency modulation conversion, sustainable communication technology, etc., can solve the problems of not meeting the mixing system at the same time, achieve low noise, meet high performance requirements, high and low local vibration selective effect

Active Publication Date: 2022-07-12
杭州永谐科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it is necessary to cope with different test systems and ensure signal quality. At present, there is no mixing system that meets the above requirements at the same time.

Method used

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  • A multi-channel broadband millimeter-wave mixing system
  • A multi-channel broadband millimeter-wave mixing system
  • A multi-channel broadband millimeter-wave mixing system

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0025] like figure 1 As shown, a multi-channel wideband millimeter-wave frequency mixing system includes a power divider and several mixing circuits, the power divider includes an input port and a number of output ports, and the number of the mixing circuits is the same as the number of the mixing circuits. The number of output ports of the power divider is equal, the output port of the power divider outputs a local oscillator signal, the mixing circuit includes an IQ mixer, a bridge and a radio frequency switch, and the IQ mixer includes a radio frequency port and three connection ports, the bridge includes four ports, when any two ports of the bridge are input ports, the other two ports are output ports, and the two input ports of the bridge are isolated from each other and The signal input from any input port will be divided into two quadrature signals of equal power by the bridge and output from the two output ports respectively. The RF switch is a single-pole double-throw...

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PUM

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Abstract

The invention discloses a multi-channel wideband millimeter-wave mixing system. When a first millimeter-wave signal is input from a radio frequency port of an IQ mixer, the first millimeter-wave signal and a first local oscillator signal are carried out in the IQ mixer. Down-conversion and then input to the bridge, the remaining two ports of the bridge output the first down-conversion signal (useful signal) and the second down-conversion signal (mirror signal) respectively, the RF switch selects the first down-conversion signal to pass through; the intermediate frequency signal from When the port of the RF switch is input, the RF switch selects one of the channels to conduct and transmit the signal to the bridge. The two ports of the bridge output two quadrature signals. The quadrature signal and the second local oscillator signal are in the IQ mixer. Perform up-conversion to obtain a second millimeter-wave signal. The mixing system of the present invention has the bidirectional characteristic of up and down conversion, and at the same time has the selectivity of high and low local oscillators, and can use different single sideband suppression schemes or image frequency interference suppression schemes for specific test scenarios.

Description

technical field [0001] The invention relates to the technical field of 5G millimeter wave communication, in particular to a multi-channel broadband millimeter wave mixing system. Background technique [0002] At present, according to the 3GPP protocol, the frequency range used in 5G millimeter wave communication is 24.25-29.5GHz, 37-42.5GHz, and the frequency range is wide. At the same time, for mobile terminals or base stations, due to the relatively high operating frequency and small operating wavelength, the design of the RF front-end is becoming more and more miniaturized and integrated, and the antenna and RF front-end cannot be tested by traditional conduction testing solutions. The design indicators are guaranteed, so an OTA test system, that is, an air interface test scheme, has been developed. [0003] In the OTA test system, in order to be compatible with different millimeter-wave terminals or millimeter-wave base stations, it is necessary to convert the millimete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/405H04B1/00H03D7/16
CPCH04B1/405H04B1/005H03D7/16Y02D30/70
Inventor 马长春袁海斌
Owner 杭州永谐科技有限公司
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