Title :
An experimental study of microstrip antennas on very high permittivity ceramic substrates and very small ground planes
Author :
Hoorfar, Ahmad ; Perrotta, Alessandro
Author_Institution :
Dept. of Electr. & Comput. Eng., Villanova Univ., PA, USA
fDate :
5/1/2001 12:00:00 AM
Abstract :
An experimental study of rectangular microstrip antennas on two ceramic composite substrates, barium-titanate with a dielectric constant of 37 and neodymium-titanate substrates with a dielectric constant of 85, is presented. The measured results for radiation patterns, cross-pol levels and resonant frequencies for antennas with ground planes as small as 1"×1" are given. It is shown that, for very small ground planes, the far-field pattern is smooth and nearly omnidirectional in both E and H planes, a feature that may be of interest in many mobile applications
Keywords :
antenna earths; antenna radiation patterns; ceramics; composite materials; electromagnetic wave polarisation; land mobile radio; microstrip antennas; mobile antennas; permittivity; resonance; substrates; BaTiO3; E plane; H plane; NdTiO3; barium-titanate; ceramic composite substrates; cross-pol levels; dielectric constant; far-field pattern; microstrip antennas; mobile applications; neodymium-titanate substrates; radiation patterns; resonant frequencies; very high permittivity ceramic substrates; very small ground planes; Antenna measurements; Antenna radiation patterns; Ceramics; Dielectric constant; Dielectric measurements; Dielectric substrates; Frequency measurement; Microstrip antennas; Permittivity; Size measurement;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
