94-GHz Log-Periodic Antenna on GaAs Substrate Using Air-Bridge Structure

Author

Baek, Yong-Hyun ; Le Huu Truong ; Park, Sun-Woo ; LEE, Sang-Jin ; Chae, Yeon-sik ; Rhee, Eung-Ho ; Park, Hyun-Chang ; Rhee, Jin-Koo

Author_Institution

Millimeter-Wave Innovation Technol. (MINT) Res. Center, Dongguk Univ., Seoul, South Korea

Volume

8

fYear

2009

fDate

7/1/1905 12:00:00 AM

Firstpage

909

Lastpage

911

Abstract

We fabricated a compact, 94-GHz log-periodic planar antenna on GaAs substrate. We used millimeter-wave monolithic integrated circuit (MMIC) process technology to fabricate the on-chip antenna. An air-bridge crossover is used to replace the conventional bonded structure for crisscross connection, which is compatible with active devices and circuits. The fabricated antenna chip size is 1.2 times 2.6 mm² . Measurement results show that this antenna can operate from 87 to 99.5 GHz with its return loss better than -10 dB. At 94 GHz, the log-periodic antenna has a return loss of -11 dB and 4.8 dBi of gain.

Keywords

MIMIC; log periodic antennas; millimetre wave antenna arrays; planar antenna arrays; GaAs; air-bridge crossover; frequency 87 GHz to 99.5 GHz; log-periodic planar antenna; millimeter-wave monolithic integrated circuit; millimetre wave antenna arrays; 94 GHz; GaAs substrate; W-band; air-bridge; crisscross connection; log-periodic antenna (LPA);

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2009.2025523

Filename

5159396