Characterization of EHM direct conversion transceivers in Ka band

Author

Shayegh, Farnaz ; Mohammadi, Abbas ; Abdipour, Abdolali

Author_Institution

Dept. of Electr. Eng., Amir Kabir Univ. of Technol., Tehran

fYear

2005

Firstpage

371

Lastpage

374

Abstract

A direct conversion modulator-demodulator with even harmonic mixers for fixed wireless applications is presented. The circuits consist of even harmonic mixers (EHMs) realized with antiparallel diode pairs (APDPs). The self-biased APDPs are used to flatten the conversion loss of the mixers. We also evaluate the different levels of I/Q imbalances and DC-offsets and use signal space concepts to analyze the bit error rate(BER) of the proposed transceiver using M-ary QAM schemes. The results show that this structure can be efficiently used for fixed wireless applications in Ka-band

Keywords

error statistics; microwave mixers; modems; quadrature amplitude modulation; transceivers; DC-offsets; EHM direct conversion transceiver characterization; I-Q imbalances; Ka band; M-ary QAM schemes; antiparallel diode pairs; bit error rate; direct conversion modulator-demodulator; even harmonic mixers; fixed wireless applications; signal space concepts; Baseband; Bit error rate; Circuits; Demodulation; Mixers; Quadrature amplitude modulation; RF signals; Radio frequency; Schottky diodes; Transceivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Technology, 2005. The European Conference on

Conference_Location

Paris

Print_ISBN

2-9600551-1-X

Type

conf

DOI

10.1109/ECWT.2005.1617734

Filename

1617734