C-band single diode mixer with ultra high LO/RF and LO/IF isolation

Author

Gowri, R. ; Raghavan, S.

Author_Institution

Dept. of ECE, Graphic Era Univ., Dehradun

fYear

2008

fDate

21-24 Nov. 2008

Firstpage

635

Lastpage

637

Abstract

A single diode mixer with ultra high LO/RF and LO/IF isolation and having good conversion loss has been designed. RF and LO signals are applied through BPF and LPF respectively. The mixer operates in C-band. It down converts the block of frequencies (5.925-6.425 GHz) to a block of frequencies (3.7-4.2 GHz) by local oscillator of signal frequency of 2.3 GHz. The proposed mixer achieves the double balanced functionality with the help of single diode and avoids the need of RF and LO baluns. The conversion losses are around 10 dB and the amount of isolation are around 60 dB. The filters are designed with microstrip. The transmission lines are synthesized and the designed circuits are through Genesys and ADS.

Keywords

microstrip filters; microwave diodes; microwave mixers; microwave oscillators; transmission lines; ADS; C-band single diode mixer; Genesys; LO-IF isolation; LO-RF isolation; conversion loss; double balanced functionality; filters; frequency 2.3 GHz; frequency 3.7 GHz to 4.2 GHz; frequency 5.925 GHz to 6.425 GHz; local oscillator; microstrip; signal frequency; transmission lines; Band pass filters; Diodes; Distributed parameter circuits; Frequency conversion; Impedance matching; Local oscillators; Microstrip filters; Mixers; RF signals; Radio frequency; Mixers; Passive mixers; Single diode mixers; mixer operation; port-to-port isolation;

fLanguage

English

Publisher

ieee

Conference_Titel

Recent Advances in Microwave Theory and Applications, 2008. MICROWAVE 2008. International Conference on

Conference_Location

Jaipur

Print_ISBN

978-1-4244-2690-4

Electronic_ISBN

978-1-4244-2691-1

Type

conf

DOI

10.1109/AMTA.2008.4763088

Filename

4763088