Title :
A versatile active antenna for low-cost microwave link applications
Author :
Soffici, G. ; Avitabile, G. ; Gentili, G. Biffi
Author_Institution :
Dipartimento di Ingegneria Elettronica, Via S.Marta, 3, 1 - 50139 - Florence - Italy, Tel.:+39 55 4796 388; E-MAIL: MICLAB@INGFII.ING.UNIFI.IT
Abstract :
An active antenna which confgures a complete microwave receiving/transmitting front-end is inlroduced. The module is based on a single bipolar transistor which acts, at the same time, as the active device of the local oscillator, capable of being frequency locked by injection, and as the non-linear element in up/down conversion operations. The radiating structure is a rectangular patch, electromagnetically fed by two microstrips. A CAD oriented model of the radiating structure is discussed and simulation results of the active antenna are reported. Experimental results of a 2.4 GHz ISM Band prototype are discussed.
Keywords :
Antenna feeds; Bipolar transistors; Circuits; Costs; Frequency; Microstrip antenna arrays; Microwave antennas; Microwave oscillators; Prototypes; Receiving antennas;
Conference_Titel :
Microwave Conference, 1995. 25th European
Conference_Location :
Bologna, Italy
DOI :
10.1109/EUMA.1995.336969
