Title :
Coplanar phased array antenna with optical feeder and photonic bandgap structure
Author :
Chakam, Guy-Aymar ; Freude, Wolfgang
Author_Institution :
High-Frequency & Quantum Electron. Lab., Karlsruhe Univ., Germany
Abstract :
A novel coplanar broadband dipole phased array sending antenna with optical feeder network and photonic bandgap structure has been developed. Hybridly integrated opto-electronic receivers and high-gain MMIC power amplifiers detect the modulated optical input power and deliver a 20-GHz microwave signal to the antenna elements. A planar photonic bandgap structure surrounding each dipole and its electric feeder line suppresses parallel plate modes of the conductor-backed substrate. The relative antenna bandwidth could be tripled from 7.5% to 22%
Keywords :
MMIC power amplifiers; antenna feeds; antenna phased arrays; coplanar waveguide components; dipole antenna arrays; microwave photonics; optical modulation; optical receivers; photonic band gap; 20 GHz; antenna bandwidth; antenna elements; broadband dipole phased array; conductor-backed substrate; coplanar phased array antenna; electric feeder line; high-gain MMIC power amplifiers; hybridly integrated opto-electronic receivers; microwave signal; modulated optical input power; optical feeder; parallel plate modes; photonic bandgap structure; planar photonic bandgap structure; sending antenna; Antenna arrays; Antenna feeds; Broadband antennas; Dipole antennas; Optical arrays; Optical modulation; Optical receivers; Phased arrays; Photonic band gap; Stimulated emission;
Conference_Titel :
Microwave Photonics, 1999. MWP '99. International Topical Meeting on
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-5558-X
DOI :
10.1109/MWP.1999.819708
