초록 ▼

A self-calibrating microwave transponder incorporating an amplifier, modulator, instantaneous frequency discriminator, memory and voltage controlled oscillator is described which may generate an RF signal in response to the carrier frequency of received low duty cycle pulse RF signals. The instantan

A self-calibrating microwave transponder incorporating an amplifier, modulator, instantaneous frequency discriminator, memory and voltage controlled oscillator is described which may generate an RF signal in response to the carrier frequency of received low duty cycle pulse RF signals. The instantaneous frequency discriminator is used to provide an address signal from the pulse RF signals which is used to access a memory that contains the correct tuning data for the voltage controlled oscillator to generate an RF signal.

대표청구항 ▼

A self-calibrating microwave transponder for generating RF signals in response to the carrier frequency of received RF signals comprising: an RF amplifier coupled to an input for receiving and amplifying said received RF signals; a modulator coupled to said RF amplifier for limiting the amplitude of

A self-calibrating microwave transponder for generating RF signals in response to the carrier frequency of received RF signals comprising: an RF amplifier coupled to an input for receiving and amplifying said received RF signals; a modulator coupled to said RF amplifier for limiting the amplitude of said RF signals; an instantaneous frequency discriminator coupled to said modulator and having a first and second output terminal for providing a first and second video signal in response to said RF signals; circuit means coupled to said first and second output terminal for generating a memory address signal; memory means coupled to said circuit means for providing a memory output in response to said memory address signal; a microwave voltage controlled oscillator coupled to said memory means and responsive to said memory output for providing an RF output signal; and self-calibrating means for storing voltage values into said memory means.