A Compact Ka-Band Doubly Balanced Sub-harmonic Mixer

Author

Lai, Yu-Ann ; Lin, Chih-Ming ; Chang, Chieh-Pin ; Lin, Che-Hung ; Wang, Yeong-Her

Author_Institution

Nat. Cheng-Kung Univ., Tainan

fYear

2007

fDate

20-22 Dec. 2007

Firstpage

437

Lastpage

440

Abstract

A novel configuration of double- balanced sub-harmonic mixer using a ring connected anti-parallel diode pair (RAPDP) is presented for operating in 26-30 GHz. The monolithic microwave integrated circuit (MMIC) was implemented with GaAs 0.15 mum PHEMT technology with the compact size of 0.85 x 0.85 mm². The proposed mixer consists of two spiral transformer baluns and a band-reject filter. The RF spiral balun with a band-reject filter served by an L-C resonator is used to provide an output port for the IF extraction. The best conversion loss of the sub-harmonic mixer is 12.7 dB and LO-to-RF and LO-to-IF isolations are better than 24 dB and 28 dB respectively.

Keywords

MMIC mixers; band-stop filters; high electron mobility transistors; resonators; LC resonator; MMIC; PHEMT technology; RAPDP; band-reject filter; ka-band doubly balanced sub-harmonic mixer; monolithic microwave integrated circuit; ring connected antiparallel diode pair; spiral transformer baluns; Diodes; Gallium arsenide; Impedance matching; MMICs; Microwave filters; Microwave integrated circuits; Monolithic integrated circuits; PHEMTs; Resonator filters; Spirals;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices and Solid-State Circuits, 2007. EDSSC 2007. IEEE Conference on

Conference_Location

Tainan

Print_ISBN

978-1-4244-0637-1

Electronic_ISBN

978-1-4244-0637-1

Type

conf

DOI

10.1109/EDSSC.2007.4450156

Filename

4450156