Heide, P. ; Schubert, R. ; Magori, V. ; Schwarte, R.
(1994)
24 GHz low-cost Doppler speed-over-ground sensor with fundamental-frequency PHEMT-DRO.
In: Gallium Arsenide Applications Symposium. GAAS 1994, 28-30 April 1994, Turin, Italy.
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Abstract
A 24 GHz high-performance Doppler sensor for non-contact measurement of vehicle speed and position is reported. The compact dimensions and the economical design make the sensor ideally suited for automotive applications. A special feature is the 24 GHz fundamental-frequency dielectric resonator oscillator employing a low-cost packaged HEMT. An excellent phase-noise behavior and good temperature stability are achieved due to higher-order mode operation of the dielectric resonator. The new Doppler sensor provides high reliability and gives excellent measurement results in both car and train tests.
Abstract