Title :
Analysis of two aperture-coupled cavity-backed antennas
Author :
Haddad, Pamela R. ; Pozar, David M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Massachusetts Univ., Amherst, MA, USA
fDate :
12/1/1997 12:00:00 AM
Abstract :
The feasibility and performance of an aperture-coupled cavity-fed microstrip patch antenna and an aperture-coupled cavity antenna are demonstrated using reciprocity and moment method analyses, followed by practical design guidelines and equivalent circuit models. Each antenna incorporates a thick ground plane that can be useful as a heat sink for active MMIC circuitry and as structural support for thin substrates. Prototype antennas show good experimental agreement with the analyses in each case. The resonators of the aperture-coupled cavity-fed patch antenna are optimized to achieve a prototype having a measured 2:1 bandwidth of 26%. The size of the aperture-coupled cavity antenna can be easily reduced for array applications by filling the cavity with a dielectric material
Keywords :
antenna feeds; antenna radiation patterns; antenna theory; aperture antennas; cavity resonators; equivalent circuits; method of moments; microstrip antennas; active MMIC circuitry; aperture-coupled cavity antenna; aperture-coupled cavity-backed antennas; aperture-coupled cavity-fed microstrip patch antenna; array applications; bandwidth; dielectric material filled cavity; equivalent circuit models; heat sink; moment method analyses; performance; practical design guidelines; prototype antennas; reciprocity; resonators; structural support; thick ground plane; thin substrates; Aperture antennas; Equivalent circuits; Guidelines; Heat sinks; MMICs; Microstrip antennas; Moment methods; Patch antennas; Performance analysis; Prototypes;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
