Title :
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
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;
Conference_Titel :
Wireless Technology, 2005. The European Conference on
Conference_Location :
Paris
Print_ISBN :
2-9600551-1-X
DOI :
10.1109/ECWT.2005.1617734
