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Microwave absorption type limiter

A technology of microwave absorption and limiter, which is applied in the direction of limiting amplitude with diodes, can solve the problems of additional bridge loss and volume loss, and achieve the effect of reducing volume loss and avoiding bridge loss

Pending Publication Date: 2019-03-29
CHENGDU YAGUANG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing absorptive limiter uses a 3dB bridge plus a PIN diode. Due to the introduction of a 3dB bridge, the circuit adds bridge loss and volume loss

Method used

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  • Microwave absorption type limiter
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  • Microwave absorption type limiter

Examples

Experimental program
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Embodiment

[0020] Such as figure 1 As shown, this embodiment provides a microwave absorbing limiter, which includes a microwave signal transmission line and a first capacitor C1 connected in series on the microwave signal transmission line, and also includes a coupling detection network and a limiter connected to the microwave signal transmission line. amplitude network, the first capacitor C1, the coupling detection network and the limiter network are sequentially arranged between the input end and the output end of the microwave signal transmission line, wherein the limiter network is provided with a PIN limiter diode, The coupling detection network outputs a DC signal, and the DC signal is used to control the turn-on or cut-off of the PIN limiting diode. In this embodiment, the first capacitor C1, the coupling detection network and the limiter network are successively arranged between the input end and the output end of the microwave signal transmission line, which means: from the inp...

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Abstract

The invention discloses a microwave absorption type limiter. The microwave absorption type limiter comprises a microwave signal transmission line and a first capacitor connected on the microwave signal transmission line in series, and further comprises a coupling detection network and an amplitude limiting network which are connected with the microwave signal transmission line, wherein the first capacitor, the coupling detection network and the amplitude limiting network are orderly arranged between an input end and an output end of the microwave signal transmission line, a PIN amplitude limiting diode is arranged in the amplitude limiting network, the coupling detection network outputs a direct current signal, and the direct current signal is used for controlling on or off of the PIN amplitude limiting diode. In the microwave absorption type limiter provided by the invention, a 3dB electric bridge used in the conventional absorption type limiter is not used, thus, electric bridge losscan be avoided, and volume loss also can be reduced.

Description

technical field [0001] The invention relates to the field of microwave limiting, in particular to a microwave absorbing limiter. Background technique [0002] As an important microwave control device, microwave limiter is widely used in radar receivers. It is often used to protect power sensitive components, such as installing before low noise amplifiers and / or mixers to protect them from being burned by high power signals , its mechanism of action is mainly to use the nonlinear limiting characteristics of microwave semiconductor diodes, such as: (1) rectification, such as Schottky barrier diodes; (2) the characteristics of capacitance changing with voltage, such as varactor diodes; (3) Adjustment of RF conductivity, such as PIN diodes. There are mainly two types of limiters: reflective and absorbing. The reflective limiter mainly relies on the reflected input power to complete the limiting function when a high-power signal invades. At this time, the circuit is in a state o...

Claims

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Application Information

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IPC IPC(8): H03G11/02
CPCH03G11/02
Inventor 唐丽蓉陈杰
Owner CHENGDU YAGUANG ELECTRONICS
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