Title :
High-Efficiency W-Band Electroforming Slot Array Antenna
Author :
Dong-yeon Kim ; Youngjoon Lim ; Hee-Sung Yoon ; Sangwook Nam
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., Seoul, South Korea
Abstract :
A W-band 8 × 8 slot array antenna is proposed and fabricated by electroforming for high-precision manufacturing. The external mutual coupling between radiating shunt slots is compensated for input impedance matching and a uniform held distribution. The overall antenna aperture area is 473.1 mm2 with slot spacings of 2.8 and 2.64 mm in the transverse and longitudinal direction, respectively. The measured maximum gain is 26.8 dBi and the corresponding antenna efficiency is 81.9% at 94 GHz. The measured impedance bandwidth when the VSWR is less than 2.0 (-10 dB) is 8.3%, with a range from 89.9 to 97.6 GHz.
Keywords :
electroforming; millimetre wave antennas; slot antenna arrays; antenna aperture; electroforming; external mutual coupling; frequency 89.9 GHz to 97.6 GHz; frequency 94 GHz; gain 26.8 dB; high efficiency W-band electroforming slot array antenna; high-precision manufacturing; impedance bandwidth; input impedance matching; longitudinal direction; radiating shunt slots; size 2.64 mm; size 2.8 mm; slot spacings; transverse direction; uniform held distribution; Antenna arrays; Antenna measurements; Arrays; Bandwidth; Couplings; Slot antennas; Electroforming; W-band; high efficiency; high-efficiency; millimeter wave antenna; waveguide slot array antenna; waveguide slot array antenna.;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2015.2398129
