Title :
Simple formulas for the input impedance, bandwidth, and radiation efficiency of a rectangular patch
Author :
Jackson, D.R. ; Alexopoulos, N.G.
Author_Institution :
Dept. of Electr. Eng., Houston Univ., TX, USA
Abstract :
Simple approximate formulas for the input impedance, bandwidth, and radiation efficiency of a resonant rectangular microstrip patch are derived. Although approximate, these formulas are derived from asymptotic approximations of a rigorous Sommerfeld solution. The formulas thus provide physical insight into the effects of the substrate parameters on the patch properties, in addition to providing approximate design formulas. The formulas become increasingly accurate for thinner substrates. Results are shown for a nonmagnetic substrate with f=3.0 GHz, b=0.25 cm (b/ lambda /sub 0/=0.025), and W/L=1.5.<>
Keywords :
antenna theory; electric impedance; microstrip antennas; 3 GHz; asymptotic approximations; bandwidth; input impedance; microstrip antenna; nonmagnetic substrate; radiation efficiency; rectangular microstrip patch; rigorous Sommerfeld solution; substrate parameters; Bandwidth; Impedance; Integral equations; Propagation constant; Surface waves; Tellurium; Video recording;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1989. AP-S. Digest
Conference_Location :
San Jose, CA, USA
DOI :
10.1109/APS.1989.134902
