Wideband Millimeter-Wave Cavity-Backed Bowtie Antenna

Provided by: EMW Publishing
Topic: Mobility
Format: PDF
Although, many directive antennas operating in a narrow band of millimeter (mm) waves were reported, e.g., antennas for 60GHz Wireless Local Area Network (WLAN), their wideband counterparts are still unpopular. Cavity-Backed Antennas (CBAs) are widely developed and reported in microwave frequency bands, but handful of literatures can be found about mm-wave CBAs in spite that their many properties are quite suitable for mm-wave applications. This paper presents a wideband unidirectional CBA with a bowtie exciter, operating in a frequency band of 40GHz over 75GHz and it is carefully analyzed in terms of influences of all components on the radiation patterns, broadside gains and reflection coefficients of the proposed antenna.

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