Title :
Compact push-pull active integrated transmitting antenna
Author :
Chan, Kin Meng ; Lee, Ee ; Gardner, Peter
Author_Institution :
Dept. of Electron., Electr. & Comput. Eng., Birmingham Univ., UK
Abstract :
In this paper, a novel method of spatially coupling differential signals to an antenna structure is described. A differential signal is used to generate a current maximum/virtual short circuit under the antenna and electromagnetic energy is efficiently coupled from the transmission line to the antenna via an aperture. A 1.85 GHz push-pull aperture-fed active integrated antenna is presented in which out-of-phase signals are combined within the aperture feed. Radiation patterns and gain measurements of both passive and active antennas are given, demonstrating a gain of 22 dB in the embedded active devices.
Keywords :
UHF antennas; active antennas; antenna feeds; antenna radiation patterns; aperture-coupled antennas; coupled transmission lines; transmitting antennas; 1.85 GHz; 22 dB; active antennas; active integrated transmitting antenna; antenna structure; antenna transmission line; aperture-fed active integrated antenna; compact integrated transmitting antenna; differential signal; electromagnetic energy; passive antennas; push-pull active integrated antenna; push-pull integrated transmitting antenna; radiation patterns; spatially coupling differential signals; virtual short circuit; Antenna feeds; Aperture antennas; Aperture coupled antennas; Coupling circuits; Distributed parameter circuits; Electromagnetic coupling; Electromagnetic radiation; Signal generators; Transmission line antennas; Transmitting antennas;
Conference_Titel :
Microwave Conference, 2005 European
Print_ISBN :
2-9600551-2-8
DOI :
10.1109/EUMC.2005.1610285
