Title :
Dipole and tripole metallodielectric photonic bandgap (MPBG) structures for microwave filter and antenna applications
Author :
Lee, Y.L.R. ; Chauraya, A. ; Lockyer, D.S. ; Vardaxoglou, J.C.
Author_Institution :
Dept. of Electron. & Electr. Eng., Loughborough Univ. of Technol., UK
fDate :
12/1/2000 12:00:00 AM
Abstract :
A photonic band gap structure made from periodic arrays of conducting dipoles and tripoles on a dielectric is presented. Using the proposed structures, several example devices have been demonstrated for microstrip resonators and filters as well as patch antennas. Measured and predicted frequency responses of a microstrip line using a dual dipole metallodielectric photonic bandgap (MPBG) structure show a 40% band width centred at 10 GHz. A planar microstrip resonator using a dipole MPBG shows a slower wave performance and a higher Q factor when compared with the conventional half-wavelength resonator. Three patch antenna designs on different dielectric constant substrates using a tripole MBPG produce better return loss, higher boresight gains (up to 3 dB) and smoother radiation patterns as a result of surface wave suppression
Keywords :
Q-factor; electric moments; microstrip antennas; microstrip resonators; microwave filters; microwave photonics; photonic band gap; 10 GHz; 3 dB; antenna applications; band width; conducting dipoles; conducting tripoles; dielectric constant substrates; dipole metallodielectric photonic bandgap structures; dual dipole metallodielectric photonic bandgap; frequency responses; half-wavelength resonator; higher Q factor; higher boresight gains; microstrip filters; microstrip line; microstrip resonators; microwave filter; patch antenna designs; patch antennas; periodic arrays; photonic band gap structure; return loss; smoother radiation patterns; surface wave suppression; tripole metallodielectric photonic bandgap structures;
Journal_Title :
Optoelectronics, IEE Proceedings -
DOI :
10.1049/ip-opt:20000892
