EURASIP Journal on Wireless Communications and Networking (Feb 2007)

Direct Conversion EHM Transceivers Design for Millimeter-Wave Wireless Applications

  • Abbas Mohammadi,
  • Farnaz Shayegh,
  • Abdolali Abdipour,
  • Rashid Mirzavand

DOI
https://doi.org/10.1155/2007/32807
Journal volume & issue
Vol. 2007

Abstract

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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). A communication link is set up to examine the overall performance of proposed modulator-demodulator. The transmission of 16-QAM signal with 110Mbps data rate over fixed wireless link has been examined. 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.