Title :
A Dual-Frequency Circular Disc Microstrip Antenna with Tunable Characteristics
Author :
Dahele, J.S. ; Lee, Kai Fong
Author_Institution :
Department of Electronics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong.
Abstract :
A microstrip antenna consisting of two stacked-circular discs has dual-frequency characteristics which is not tunable. It is shown here that a dual-frequency antenna in which the resonances are tunable, can be obtained by introducing air gaps between the upper and lower discs and/or between the lower disc and the ground plane.
Keywords :
Air gaps; Antenna measurements; Bandwidth; Coaxial components; Feeds; Frequency measurement; Impedance measurement; Microstrip antennas; Resonance; Resonant frequency;
Conference_Titel :
Microwave Conference, 1982. 12th European
Conference_Location :
Helsinki, Finland
DOI :
10.1109/EUMA.1982.333090
