Title :
Wideband Antenna Patterns and Impulse Response of Broadband RF Phased Arrays With RF and Photonic Beamforming
Author :
Rotman, Ruth ; Raz, Oded ; Barzilay, Sharon ; Rotman, Stanley R. ; Tur, Moshe
Author_Institution :
Sch. of Electr. Eng., Tel Aviv Univ.
Abstract :
The general expression for a monochromatic antenna pattern is extended to a two dimensional function with dependence on both space and time. Expressions for the wideband antenna pattern in space and the impulse response in time are developed. The effects of random errors in the spatial domain and errors common to all elements with fluctuations in the frequency domain are analyzed. Examples are given, including RF beamformers and elements in finite arrays, but with an emphasis on a photonic beamformer, which shows improved performance relative to its RF counterparts in both the spatial and time domains
Keywords :
antenna phased arrays; antenna radiation patterns; array signal processing; broadband antennas; frequency-domain analysis; transient response; broadband RF phased array; frequency domain; impulse response; monochromatic antenna pattern; photonic beamformer; random error; spatial domain; two dimensional function; wideband antenna pattern; Antenna arrays; Array signal processing; Bandwidth; Broadband antennas; Genetic expression; Phased arrays; Radio frequency; Receiving antennas; Transfer functions; Wideband; Antenna arrays; photonic beamforming; wideband beamforming networks; wideband phased array; wideband radar requirements;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2006.888441
