Radiation at broadside from leaky waves is studied for one-dimensional periodic structures modeled by means of a transmission line periodically loaded by series or shunt loads. An asymptotic Bloch analysis of the equivalent network and a simple array-factor calculation of the radiated far field allows the derivation of conditions for achieving maximum power density radiated at broadside and beam splitting in terms of the dispersion properties of the corresponding leaky mode. The 3 dB frequency bandwidth for broadside radiation is characterized in terms of the leaky-pole locations in the complex plane and an approximate formula is provided. © 2005 IEEE.
Leaky-wave radiation at broadside from one-dimensional open periodic structures / Burghignoli, Paolo; Lovat, Giampiero; D. R., Jackson. - ELETTRONICO. - 1 B:(2005), pp. 264-267. (Intervento presentato al convegno 2005 IEEE Antennas and Propagation Society International Symposium and USNC/URSI Meeting tenutosi a Washington, DC nel 3 July 2005 through 8 July 2005) [10.1109/aps.2005.1551538].
Leaky-wave radiation at broadside from one-dimensional open periodic structures
BURGHIGNOLI, Paolo;LOVAT, GIAMPIERO;
2005
Abstract
Radiation at broadside from leaky waves is studied for one-dimensional periodic structures modeled by means of a transmission line periodically loaded by series or shunt loads. An asymptotic Bloch analysis of the equivalent network and a simple array-factor calculation of the radiated far field allows the derivation of conditions for achieving maximum power density radiated at broadside and beam splitting in terms of the dispersion properties of the corresponding leaky mode. The 3 dB frequency bandwidth for broadside radiation is characterized in terms of the leaky-pole locations in the complex plane and an approximate formula is provided. © 2005 IEEE.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
