Wideband frequency-scanning phased-array feed network using novel composite right/left-handed unit cell.

Based on a novel composite right/left-handed unit cell, a wideband frequency- scanning network with a large scanning angle ranging towards both negative and positive elevation angles is proposed. The measured results show that the insertion loss variation of the designed frequencyscanning network is 7.2 ± 1 dB when the frequency ranges from 4.33 to 8.53 GHz and the phase differences of adjacent output ports scan from -50° to 50° when the frequency ranges from 4.76 to 8.26 GHz (53.8%). The proposed network can be used in wideband systems that require a large scanning angle range. [ABSTRACT FROM AUTHOR]