Simple composite right/left-handed leaky-wave antennas for continuous beam scanning from backward to forward direction

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Conference Proceeding
2016 URSI Asia-Pacific Radio Science Conference, URSI AP-RASC 2016, 2016, pp. 174 - 176
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© 2016 IEEE. Microstrip leaky-wave antennas (MLWAs) are presented for continuous beam scanning from backward to forward directions. The antenna is implemented by cascading composite right/left-handed (CRLH) unit cells. Each unit cell consists of two outer shorted patches and an open patch between the shorted patches. Series capacitance is implemented by using gaps between the patches, and shunt inductance is achieved by using metallic vias. Two antennas with different numbers of unit cells are considered for the analysis. An antenna with 8 unit cells covers an impedance bandwidth from 6.12 to 9.075 GHz and the main beam scans continuously from -52° to 47° when the frequency is swept from 6.25 to 9.25 GHz.
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