Active quarter-wavelength dielectric radiator with circularly polarised radiation pattern

12 September 1991

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 27 (19) , 1758-1759
https://doi.org/10.1049/el:19911093

Abstract

An active circularly-polarised dielectric radiator array (DRA), which is integrated with a transistor, is formed by a special arrangement of four slow wave λ/4 dielectric resonators (DRs) together with a 90° phase shifter. Small size, low phase noise and high frequency stability are the major characteristics of this DRA at 480 MHz. With proper circuit topology, the DRA can be used as a Doppler motion detector.

Keywords

PHASE NOISE
SLOW WAVE DR
480 MHZ
FREQUENCY STABILITY
INTEGRATED TRANSISTOR
UHF
DOPPLER MOTION DETECTOR
QUARTER-WAVELENGTH
CIRCULARLY POLARISED
ACTIVE ARRAY
RADIATION PATTERN
DIELECTRIC RADIATOR
90° PHASE SHIFTER

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