A Compact W-Band Planar Quasi-Yagi Antenna on GaAs Substrate for Active Phased Array Antenna

Author

Truong, Le Huu ; Baek, Yong Hyun ; Choi, Seok Gyu ; Lee, Mun Kyo ; Ko, Du Hyun ; Lee, Sang Jin ; Chien, Dao Ngoc ; Chae, Yeon Sik ; Rhee, Jin Koo

Author_Institution

Millimeter-wave Innovation Technol. Res. Center, Dongguk Univ., Seoul

fYear

2008

Firstpage

123

Lastpage

126

Abstract

In this paper, a design of compact W-band planar Quasi-Yagi antenna is presented. The proposed antenna is fed by 50 Ohm coplanar waveguide with a broad-band balun in order to convert from unbalanced grounded-coplanar waveguide (G-CPW) mode into balanced coplanar strip line (CPS) mode. This antenna is realized on a high dielectric constant substrate, GaAs-relative dielectric permittivity of 12.9, that´s compatible with active devices and circuits. Using the truncated ground plane as a reflector, the proposed antenna has a broad relative bandwidth of 18.07% with its return loss better than -10 dB, front to back ratio is 15.6 dB and 6.08 dBi of gain at 94 GHz. This antenna can be widely applied in wireless communication systems, active phased array antenna or millimeter-wave imaging systems.

Keywords

Yagi antenna arrays; active antenna arrays; antenna phased arrays; baluns; broadband antennas; coplanar waveguides; microwave antenna arrays; GaAs; active circuits; active devices; active phased array antenna; balanced coplanar strip line mode; broad-band balun; broadband antenna; compact W-band planar quasi-Yagi antenna; dielectric permittivity; frequency 94 GHz; high dielectric constant substrate; millimeter-wave imaging systems; planar antenna; resistance 50 ohm; truncated ground plane; unbalanced grounded-coplanar waveguide mode; wireless communication systems; Antenna arrays; Coplanar waveguides; Dielectric constant; Dielectric devices; Dielectric substrates; Gallium arsenide; High-K gate dielectrics; Impedance matching; Permittivity; Phased arrays; CPW fed; GaAs substrate; Quasi Yagi antenna; W-band antenna; broad band antenna; planar antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Millimeter Waves, 2008. GSMM 2008. Global Symposium on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-1885-5

Electronic_ISBN

978-1-4244-1886-2

Type

conf

DOI

10.1109/GSMM.2008.4534575

Filename

4534575