Title :
Radiation-pattern improvement of patch antennas using a compact soft/hard surface (SHS) structure on LTCC multilayer technology
Author :
DeJean, G. ; Li, R.L. ; Tentzeris, M.M. ; Papapolymerou, J. ; Laskar, J.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
A compact soft/hard surface (SHS) structure consisting of a square ring of short-circuited metal strips is employed to surround the patch antenna for blocking the surface-wave propagation, thus alleviating the effect of the edge diffraction and hence improving the radiation pattern. The operating frequency of the SHS is determined by the width of the metal strip, therefore it is suitable for a substrate with arbitrary thickness and dielectric constant. The compact SHS structure is realized on a low temperature co-fired ceramics (LTCC) technology. It is shown that the gain of a patch antenna can be increased to near 9 dBi through the use of the proposed compact SHS structure.
Keywords :
antenna radiation patterns; ceramic packaging; frequency selective surfaces; microstrip antennas; surface electromagnetic waves; LTCC multilayer technology; SHS structure; antenna radiation-pattern; arbitrary dielectric constant substrate; arbitrary thickness substrate; compact soft/hard surface structure; edge diffraction; low temperature co-fired ceramics; metal strip square ring; metal strip width frequency dependance; patch antenna gain; probe-fed square patch antenna; short-circuited metal strips; surface-wave propagation blocking; Circuits; Dielectric constant; Dielectric substrates; Diffraction; Frequency; Nonhomogeneous media; Patch antennas; Periodic structures; Strips; Surface waves;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1329636
