초록 ▼

An improved low-angle radiation antenna is obtained through excitation of a tangential electric field on the high-impedance surface, as well as leaky transverse-electric surface waves. Such fields and surface waves cannot normally occur on an ordinary metal surface. The tangential electric field on

An improved low-angle radiation antenna is obtained through excitation of a tangential electric field on the high-impedance surface, as well as leaky transverse-electric surface waves. Such fields and surface waves cannot normally occur on an ordinary metal surface. The tangential electric field on the high-impedance region excites a transverse-magnetic surface wave on a surrounding metal surface which gives improved low-angle radiation in the E-plane of an antenna disposed on the high impedance surface. Leaky transverse-electric surface waves provide improved radiation in the H-plane of the antenna.

대표청구항 ▼

1. A method of making a thin, low-angle radiation antenna, comprising the steps of:(a) substantially surrounding a high-impedance surface by a larger conductive surface having low-impedance surface; and (b) disposing at least one antenna element on said high-impedance surface, the antenna having an

1. A method of making a thin, low-angle radiation antenna, comprising the steps of:(a) substantially surrounding a high-impedance surface by a larger conductive surface having low-impedance surface; and (b) disposing at least one antenna element on said high-impedance surface, the antenna having an operating frequency which is in a frequency range for which the high impedance surface supports transverse-electric (TE) surface waves and couples same to transverse-magnetic (TM) surface waves in said conductive surface.