Title :
A finite array of ring-slot elements in a ground plane
Author :
Chu, R.S. ; Lee, J.J.
Author_Institution :
Microwave Div., Hughes Aerosp. & Electron. Co., El Segundo, CA, USA
Abstract :
A ring-slot element excited by a zeroth order mode (no angular variation) E-field across the slot behaves as a monopole. It is a duality of a loop antenna with constant current distribution. A study of monopole array was reported by Fenn (1985). A monopole array is suitable for applications that require a null at broadside and a higher gain beyond 50/spl deg/ and towards endfire. For example, a low profile belly-mounted airborne terminal designed for naval communications can make use of such an element. However, the lack of mechanical rigidity of a monopole array makes it less desirable for a highly vibrating environment compared to all equivalent flush mounted ring-slot array. The characteristics of a finite array or ring-slot elements are presented and they are compared to that of a monopole array.
Keywords :
aircraft communication; antenna radiation patterns; current distribution; military communication; mobile antennas; monopole antenna arrays; slot antenna arrays; constant current distribution; endfire; finite array; flush mounted ring-slot array; ground plane; loop antenna; low profile belly-mounted airborne terminal; monopole; monopole array; naval communications; ring-slot elements; zeroth order mode E-field; Admittance; Aerospace electronics; Antenna arrays; Impedance; Lattices; Voltage; Yttrium;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1995. AP-S. Digest
Conference_Location :
Newport Beach, CA, USA
Print_ISBN :
0-7803-2719-5
DOI :
10.1109/APS.1995.530935