A c-band large dynamic small step numerical control attenuator

A digitally controlled attenuator and large dynamic technology, applied in the field of communication and radar, can solve the problems of poor control accuracy and small adjustable range, achieve fast adjustment speed, avoid mutual interference, and ensure high precision and rapidity

Active Publication Date: 2018-02-06
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the digital control attenuators in the C-band have a small adjustable range, generally 0-30dB, poor control accuracy, and generally only have an attenuation step of 0.5dB

Method used

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  • A c-band large dynamic small step numerical control attenuator
  • A c-band large dynamic small step numerical control attenuator

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Experimental program
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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] refer to figure 2 , figure 2 It is the internal structure diagram of a C-band large dynamic small-step numerical control attenuator of the present invention. The specific technical solution is: the signal first enters the first isolator, then enters the power divider, splits into two channels, and receives the detector respectively The first attenuation chip and the wave detector are connected to the control module for input power detection. The first attenuation chip is connected in series with the second attenuation chip through the second isolator, and finally the signal is output through the third isolator. Wherein the first attenuation chip, the second attenuation chip and the wave detector are respectively connected to the circuit of the single-chip microcomputer through an inter-board connector.

[0020] figure 2 The two types of attenuation chips...

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Abstract

The invention discloses a C-band large dynamic small-step numerical control attenuator, which comprises a metal box body and a circuit module. The box body is divided into upper and lower layers, and the upper layer is further divided into left and right rooms. The circuit module includes an attenuation module and a digital control module, which are respectively located on the upper and lower layers of the box body, and can be connected by two-way communication. A C-band large dynamic and small step numerically controlled attenuator disclosed has large dynamic power control range and fast switching speed, small size and high reliability. Accurate attenuation steps in dB. In addition, a C-band large dynamic small-step digital control attenuator disclosed can also detect the input power of the digital control attenuator.

Description

technical field [0001] The invention relates to the fields of radar and communication, in particular to a C-band large dynamic small-step numerically controlled attenuator, which is used to realize input power detection and high-precision C-band numerically controlled attenuation within a high dynamic range. Background technique [0002] The attenuator is a kind of energy loss radio frequency / microwave component, which is mainly used in aviation, aerospace, radar, communication and other fields. With the development of modern electronic technology, a fast-adjusting attenuator is used in many occasions. Usually, the realization method is as follows: Two types, one is a semiconductor small power tube fast-tuning attenuator, such as a PIN tube or FET monolithic integrated attenuator; the other is a switch-controlled resistance attenuation network, the switch can be an electronic switch or a radio frequency relay. [0003] In the control circuit of the broadband microwave freque...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H03H17/00
CPCH03H17/0054
Inventor朱秀敏杨作成杨贺李楠张静张志忠仝信男张世超
OwnerNO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP