Title :
Wave propagation characteristics of a reactively loaded microstrip
Author_Institution :
Anritsu Co., Morgan Hill, CA, USA
Abstract :
The characteristics of wave propagation along a reactively loaded microstrip operating in its first higher-order mode are investigated by means of the transverse-resonance and two-dimensional finite-difference time-domain techniques. It is found that the phase velocity along the microstrip and the cutoff frequency of its first higher-order mode are functions of the reactive-load value. These effects are used to design fixed-frequency continuously beam-steerable leaky-wave antennas, and antennas with a continuously adjustable operating frequency range.
Keywords :
beam steering; finite difference time-domain analysis; leaky wave antennas; microstrip antennas; microstrip lines; waveguide theory; 2D FDTD techniques; 2D finite-difference time-domain techniques; continuously adjustable operating frequency range; continuously beam-steerable antennas; cutoff frequency; first higher-order mode; fixed-frequency leaky-wave antennas; leakage mechanism; phase velocity; reactive-load value; reactively loaded microstrip; transverse resonance; two-dimensional FDTD techniques; wave propagation characteristics; Dielectrics; Frequency; Impedance; Leaky wave antennas; Microstrip antenna arrays; Microstrip antennas; Phased arrays; Propagation constant; Time domain analysis; Varactors;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1212496
