Journal
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Volume 65, Issue 9, Pages 4418-4426Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2017.2723663
Keywords
Continuous beam steering antennas; flat antennas; gap waveguide technology; hollow waveguide technology; mechanical beam steering antennas; millimeter-wave antennas; reflection canceling technique
Funding
- JSPS KAKENHI through Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan [15F15366]
- Grants-in-Aid for Scientific Research [15F15366] Funding Source: KAKEN
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A wideband and continuous beam steering flat antenna is proposed in the 60-GHz band. The antenna consists of two layers and is made of two parts: 1) a feeding network and 2) a slotted plate. The relative rotation movement between the two antenna parts generates a phase gradient across the radiating part, and a continuous beam is generated in the upper hemisphere. The mechanical movement between the two antenna parts is facilitated by the use of gap waveguides; therefore, no electrical contact is needed between the two metallic parts. To validate the antenna concept, an antenna has been designed and fabricated in the 60-GHz band. Good agreement has been obtained between the simulations and the measurements. The antenna field of view is up to +/- 60 degrees. The antenna bandwidth is up to 13% for VSWR <2. The loss within the antenna structure is estimated to be around 0.86 dB.
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