IEEE Transactions on Microwave Theory and Techniques · 1991 · 77 citations · 9 references
Natural SciencesElectrical EngineeringPhysicsAntennasMicrowave EngineeringOpticsMicrowave OscillatorsRadar AntennasRadar InstrumentationRadar Signal ProcessingRadar SystemsReceiver SystemsCoherent DetectionDoppler MeasurementsPhase-locked OscillatorsRadar ReceiversRadar TransmittersReceiver DesignSignalsSubharmonic Mixers
An experimental coherent pulsed radar operating at 225 GHz is described. The system uses a pulsed, phase-locked extended interaction oscillator transmitter and frequency divided by 4 subharmonic mixer pumped by a phase-locked Gunn oscillator as the receiver. A quasi-optical circular polarization duplexer combines transmitter and receiver signals into the same antenna. Results presented include the detection of targets out to ranges of 3.5 km and observations of Doppler spectra of trucks and tracked vehicles which show contributions from both body and tracks.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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Design of corrugated conical horns
B. Thomas · IRE Transactions on Antennas and Propagation · 1978 · 119 citations