Radar system and methods for making and using same

摘要

A transmitter front end circuit is described. The transmitter front end circuit is provided with a radar transmitter port, a radar receiver port, a radar amplifier, a coupler, a radar antenna input and a signal director. The radar amplifier has a low power side receiving a transmit signal having a transmit waveform modulated onto a carrier frequency from the radar transmitter port, and a high power side outputting an amplified transmit waveform suitable for transmission to a radar antenna. The coupler is coupled to the high power side of the radar amplifier to sample the amplified transmit waveform. The radar antenna input is configured to receive return signals from a radar antenna. And, the signal director selectively directs the sample of the amplified transmit waveform and the return signals to the radar receiver port.

主权项

1. A microwave transceiver for a radar system, comprising:
a voltage controlled oscillator configured to generate a carrier frequency; a loop filter circuit electrically coupled to the voltage controlled oscillator; a phase locked loop synthesizer circuit electrically coupled to the voltage controlled oscillator and the loop filter circuit, the phase locked loop circuit configured to receive an input signal from the voltage controlled oscillator and to provide an output signal to the voltage controlled oscillator through the loop filter circuit to lock the output of the voltage controlled oscillator to the carrier frequency; a transmit mixer receiving the carrier frequency and modulating a transmit waveform onto the carrier frequency to generate a transmit signal; and a receive mixer receiving the carrier frequency and using the carrier frequency to demodulate a receive waveform from a return signal generated by a radar antenna.