Title :
A low-cost active antenna for short-range communication applications
Author :
Carrez, Frédéric ; Stolle, Reinhard ; Vindevoghel, Jean
Author_Institution :
I.E.M.N., Villeneuve d´´Asq, France
fDate :
6/1/1998 12:00:00 AM
Abstract :
A low-cost active antenna to be used in a miniature microwave transponder is presented. This active antenna operating at 9.9 GHz consists of a compact microstrip array antenna of electromagnetically gap-coupled rectangular resonators and a novel ASK demodulator/differential phase-shift keying (DPSK) modulator circuit. In order to minimize the power consumption and to reduce the cost of the active antenna, this novel microwave circuit employs a single “cold” MESFET which performs both the modulator and demodulator functions. The original methods used to realize the active antenna provide high performance, size reduction, and low power consumption
Keywords :
Schottky gate field effect transistors; active antenna arrays; amplitude shift keying; antenna radiation patterns; demodulators; differential phase shift keying; gallium arsenide; microstrip antenna arrays; modulators; resonators; 9.9 GHz; ASK demodulator/DPSK modulator circuit; GaAs; MESFET; compact microstrip array antenna; differential phase-shift keying; gap-coupled rectangular resonators; low power consumption; low-cost active antenna; miniature microwave transponder; short-range communication applications; Amplitude shift keying; Demodulation; Energy consumption; Microstrip antenna arrays; Microstrip antennas; Microstrip resonators; Microwave antennas; Microwave communication; Phased arrays; Transponders;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
