Title :
Active integrated radiator for microwave sensing system
Author :
Yu-On, Yam ; Man-Lung, Lam ; Tsz-Bun, Ng
Author_Institution :
Dept. of Electron. Eng., City Polytech. of Hong Kong, Kowloon, Hong Kong
Abstract :
The design and test of an active integrated radiator (AIR) which is suitable for use in phased arrays and spatial power combining are described. The circuit is constructed by using a removed-lateral-shell dielectric resonator (DR) to serve as a radiator and a resonator, with a BJT transistor as the active device. The high-Q DR is small in size and acts as a frequency selective element in the active radiator, and provides the high frequency stability and low phase noise (-90 dBc/Hz) characteristic. The performance of the DR radiator is discussed. This kind of active radiator can be used in a remote control system and a miniature Doppler radar system, particularly, in low microwave frequency band(<1 GHz)
Keywords :
Doppler effect; active antennas; antenna phased arrays; antenna radiation patterns; dielectric resonators; microwave antenna arrays; microwave detectors; radar antennas; solid-state microwave circuits; 1 GHz; BJT transistor; Doppler frequency transceiver; Doppler sensor; UHF; active integrated radiator; dielectric resonator; frequency selective element; high frequency stability; low phase noise; microwave sensing system; miniature Doppler radar system; phased arrays; radiation pattern; remote control system; removed-lateral-shell; spatial power combining; Antenna radiation patterns; Circuit stability; Circuit testing; Dielectric devices; Feedback; Frequency; Phase noise; Phased arrays; Power harmonic filters; Prototypes;
Conference_Titel :
Circuits and Systems, 1991. Conference Proceedings, China., 1991 International Conference on
Conference_Location :
Shenzhen
DOI :
10.1109/CICCAS.1991.184521
