Title :
Design of compact planar antennas using LH-transmission lines
Author :
Schussler, Martin ; Freese, Jens ; Jakoby, Rolf
Author_Institution :
Inst. fur Hochfrequenztechnik, Technische Univ. Darmstadt, Germany
Abstract :
This contribution demonstrates the possibility to reduce the size of planar antennas by using LH-transmission lines. Two different types of radiators are investigated - a microstrip patch and a slotted cavity. A transmission line model is employed to design and compare these two approaches and their realization with a varying number of L-C loaded unit cells. Three representative antenna configurations have been selected and subsequently optimized with full wave electromagnetic analysis. Return loss and radiation pattern measurements of these antennas proof the developed concept.
Keywords :
antenna radiation patterns; microstrip antennas; microstrip lines; slot antennas; transmission line theory; L-C loaded unit cell; LH-transmission lines; antenna configuration; compact planar antenna; full wave electromagnetic analysis; microstrip patch; patch antennas; radiation pattern measurement; radiator; return loss measurement; slotted cavity; transmission line model; Collision mitigation; Frequency; Inductors; Loaded antennas; MIM capacitors; Microstrip antennas; Patch antennas; Planar arrays; Resonance; Wires;
Conference_Titel :
Microwave Symposium Digest, 2004 IEEE MTT-S International
Print_ISBN :
0-7803-8331-1
DOI :
10.1109/MWSYM.2004.1335846
