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8-bit temperature compensation type numerical-control phase shifter

A technology of temperature compensation and numerical control phase shifting, which is applied in the microwave field, can solve the problems of poor precision of phase shifters, and achieve the effect of improving phase shifting accuracy, high stability and superior performance

Inactive Publication Date: 2018-04-20
CHENGDU SINE SCI & TECH
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantages of poor accuracy of current phase shifters and provide an 8-bit temperature-compensated digitally controlled phase shifter

Method used

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  • 8-bit temperature compensation type numerical-control phase shifter

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Embodiment

[0031] The system block diagram of the 8-bit temperature-compensated digitally controlled phase shifter in this example can be found in figure 1 , which includes a power supply module, an analog phase shifter, an FPGA module, a storage module, a communication module, an operational amplifier circuit, a digital-to-analog converter and a temperature sensor, and the storage module, a communication module, a digital-to-analog converter and a temperature sensor are respectively connected to the FPGA module , the digital-to-analog converter is connected to the operational amplifier circuit, the operational amplifier circuit is connected to the control voltage terminal of the analog phase shifter, and the power supply module supplies power to each module.

[0032] Among them, the communication module is used to connect with an external host computer, and at least can receive an external 8-bit control signal and transmit it to the FPGA module. In this example, the communication module...

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Abstract

The invention relates to the microwave technology. In order to solve a problem of poor accuracy of the existing phase shifter, the invention provides an 8-bit temperature compensation type numerical-control phase shifter. The phase shifter is characterized by comprising an analog phase shifter, a power module, an FPGA module, a storage module, a communication module, an operational amplifier circuit, a digital-analog converter, and a temperature sensor. The storage module, the communication module, the digital-analog converter, and the temperature sensor are respectively connected with the FPGA module; and the digital-analog converter is connected with the operational amplifier circuit connected with a control voltage terminal of the analog phase shifter. The power module provides power for all modules. The 8-bit temperature compensation type numerical-control phase shifter has the following beneficial effect: the phase-shifting accuracy of the phase shifter is improved. The 8-bit temperature compensation type numerical-control phase shifter is provided.

Description

technical field [0001] The invention relates to microwave technology, in particular to radio frequency microwave communication control technology. Background technique [0002] A phase shifter is a control element that controls the phase change of a signal, so it is a key device in a microwave circuit. Phase shifters are widely used in radar systems, microwave communication systems and measurement systems. Generally, according to the different control methods, it can be divided into analog phase shifter and digital phase shifter. Most of the current phase-shifting circuits use analog devices to achieve phase-shifting, and then use digital-to-analog converters to control varactors or semiconductor switches to realize numerical control interfaces. The phase shift of the analog phase shifter is continuously adjustable, and the phase shift of the digital phase shifter is quantized, that is, its phase can only be changed in discrete steps. Due to the inherent temperature drift...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423
Inventor 王清文徐润莲
Owner CHENGDU SINE SCI & TECH
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