L-frequency band miniature sheet type high-power amplitude limiter

Abstract

The invention provides an L-frequency band miniature chip type high-power amplitude limiter. The limiter comprises a high-thermal-conductivity high-frequency microwave printed circuit substrate, the high-thermal-conductivity high-frequency microwave printed circuit substrate is provided with the components of a coupling circuit which is used for carrying out power coupling on an input signal; a detection circuit which is used for carrying out power detection on the coupling signal; a direct-current bias circuit which is used for carrying out accelerated response on the amplitude limiting circuit, a high-power amplitude limiting circuit which is used for carrying out amplitude limiting on an input high-power signal, an impedance matching circuit A and an impedance matching circuit B for carrying out standing wave improvement on each element of the amplitude limiter, and a high-isolation amplitude limiting circuit for carrying out deep amplitude limiting on an output signal. The printedcircuit substrate adopts a ceramic printed circuit board, the purposes of high heat dissipation and small size of the amplitude limiter are achieved through the characteristics of the ceramic printedcircuit board and the dual-purpose mode of one board, the defects of small passing power and low response speed are overcome through combined connection between circuits, and the amplitude limiter with super power is achieved by combining the ceramic printed circuit board and the miniature sheet type size limiter on the miniature substrate.

Description

technical field [0001] The invention relates to the technical field of microwave control circuits, specifically an L-band micro-chip high-power limiter. Background technique [0002] High-power limiter is a microwave control device commonly used in wireless transceiver systems, especially in high-power radar systems. It is generally used at the front end of the receiving system to prevent large signals such as transmitter leakage power, adjacent radar irradiation, and close-range target scattering from entering the receiver. The machine burns its low noise amplifier and other sensitive components. [0003] With the rapid development of electronic warfare systems in recent years, the radar transmission power has increased rapidly, which puts forward severe requirements on the power resistance performance of the limiter. At the same time, the miniaturization, tile-type, and modular development of phased array radar RF front-ends have become an inevitable trend, and traditiona...

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Problems solved by technology

[0004] The purpose of the patent of this invention is to provide an L-band micro-chip high-power limiter to solve the shortcomings of conventional limiters, such as large volume, small passing power, and slow response speed, and realize ultra-high power limiter on the micro-substrate device

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