Amplitude limiter

Details Amplitude limiter Amplitude limiter

H - Electricity

03

H

H03H 7/24 (2006.01) H03G 11/02 (2006.01)

Patent

CA 2108252

The invention concerns an HF-signal amplitude limiter with a wide variety of applications. HF signals with too high a gain are reflected and absorbed in the amplitude limiter. The assembly is preferably designed as a reliable and mechanically robust unit using strip line technology. The amplitude limiter proposed is preferably for use in the input of the receiver stage of an HF receiver, in particular a radar receiver and/or the transmit/receive module of an active (radar) antenna assembly. An amplitude limiter including an input power divider, first and second circuit branches each having an input end coupled to receive a split input signal and each being substantially identical electrically parallel-connected branches, each circuit branch being composed of a series connection of first and second conductor sections with the first and second conductor sections having respectively different lengths, and with the first and second conductor sections of each circuit branch being connected in anti-parallel, an absorber resistor connected between the two input ends of the circuit branches, and first and second rectifiers with each respective rectifier being connected between a connection point between the first and second conductor sections of each respective circuit branch and a ground conductor.

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