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

Volume

63

Issue

4

fYear

2015

fDate

Apr-15

Firstpage

1854

Lastpage

1857

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.;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2015.2398129

Filename

7027830