Title :
Analysis of a low profile slotted microstrip antenna for cellular mobile radio
Author :
Petosa, Aldo ; Strickland, Peter C. ; Wight, James S.
Author_Institution :
CAL Corp., Ottawa, Ont., Canada
fDate :
11/1/1992 12:00:00 AM
Abstract :
The TM01 mode of a circular resonant microstrip cavity has been used to produce an omnidirectional vertically polarized antenna with a broadside null. Interlaced circumferential slots were added, resulting in reductions in the resonant frequency of up to 50%. The performance of this antenna when mounted on the roof of an automobile has been analyzed through the application of the geometric theory of diffraction (GTD). Chebychev matching networks have been investigated to implement a broadband impedance match to the antenna
Keywords :
antenna radiation patterns; cellular radio; geometrical optics; impedance matching; microstrip antennas; mobile antennas; slot antennas; Chebychev matching networks; GTD; TM01 mode; automobile-roof-mounted antenna; broadband impedance match; broadside null; cellular mobile radio; circular resonant microstrip cavity; geometric theory of diffraction; interlaced circumferential slots; low profile slotted microstrip antenna; omnidirectional vertically polarized antenna; radiation patterns; Antenna theory; Automobiles; Broadband antennas; Microstrip antennas; Performance analysis; Physical theory of diffraction; Polarization; Resonance; Resonant frequency; Slot antennas;
Journal_Title :
Vehicular Technology, IEEE Transactions on
