Title :
Planar slot antennas backed by a ground plane
Author :
Ostner, H. ; Biebl, E.M.
Author_Institution :
Lehrstuhl fuer Hochfrequenztechnik, Tech. Univ. Munchen, Germany
fDate :
June 28 1993-July 2 1993
Abstract :
The authors present experimental and numerical data on half and full wave slot antennas backed by a ground plane. In the experiment the space between the metal plane with the slot and the ground plane was air-filled for easy variation of the plate separation d. The results show that the input impedance of the slot antenna as well as the excitation of the parallel-plate waveguide mode depends strongly on the plate separation d. The minimum impedance of the full wave slot is about 3 /spl Omega/, which promises successful application as a resonator for an IMPATT diode. Numerical investigations have been extended to silicon substrates and show similar behavior. In comparison to slot antennas without backside metallization a smaller radiation efficiency is obtained due to the excitation of the TEM (transverse electromagnetic) mode.<>
Keywords :
Galerkin method; antenna radiation patterns; electric impedance; integral equations; metallisation; planar waveguides; slot antennas; spectral-domain analysis; IMPATT diode; full wave slot antennas; ground plane; half wave slot antennas; input impedance; metallization; parallel-plate waveguide mode; planar slot antennas; radiation efficiency; substrates; Calibration; Electrical resistance measurement; Heat sinks; Impedance measurement; Integral equations; Optical resonators; Optical surface waves; Optical waveguides; Resonance; Slot antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385271
