94GHz Single-balanced Diode Mixer for FMCW Radar applications

Author

Ko, Dong-Sik ; Lee, Mun-Kyo ; Dan An ; Lee, Bok-Hyung ; Lim, Byeong-Ok ; LEE, Sang-Jin ; Moon, Sung-Woon ; Jun, Byoung-Chul ; Bang, Seok-Ho ; Park, Jung-Dong ; Kim, Wan-Joo ; Kim, Sam-Dong ; Rhee, Jin-Koo

Author_Institution

Millimeter-wave INnovation Technol. Res. Center (MINT), Dongguk Univ., Seoul

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1

Lastpage

4

Abstract

In this paper, we present a high performance 94 GHz MMIC diode mixer using a 100-nm metamorphic high electron mobility transistor (MHEMT) diode and coplanar waveguide (CPW) 3-dB tandem coupler. A novel single-balanced structure of MHEMT diode mixer was proposed in this work, and 3-dB tandem coupler with the air-bridge structure was used for broadband LO-RF isolation. The fabricated mixer has LO-RF isolation, greater than 19 dB, in 15 GHz bandwidth of 82-97 GHz. The good conversion loss of 14.8 dB was measured at 94 GHz.

Keywords

CW radar; FM radar; MMIC mixers; coplanar waveguides; diodes; high electron mobility transistors; millimetre wave mixers; waveguide couplers; FMCW radar application; MHEMT diode; MMIC diode mixer; air-bridge structure; coplanar waveguide; fabrication technology; frequency 94 GHz; frequency modulation continuous wave radar; metamorphic high electron mobility transistor; size 100 nm; tandem coupler; Bandwidth; Coplanar waveguides; Couplers; Coupling circuits; Diodes; Millimeter wave radar; Millimeter wave technology; Performance loss; Radar applications; mHEMTs;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. APMC 2007. Asia-Pacific

Conference_Location

Bangkok

Print_ISBN

978-1-4244-0748-4

Electronic_ISBN

978-1-4244-0749-1

Type

conf

DOI

10.1109/APMC.2007.4554650

Filename

4554650