tailieunhanh - Báo cáo hóa học: "Research Article Millimeter-Wave Ultra-Wideband Six-Port Receiver Using Cross-Polarized Antennas"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Millimeter-Wave Ultra-Wideband Six-Port Receiver Using Cross-Polarized Antennas | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2009 Article ID 508678 7 pages doi 2009 508678 Research Article Millimeter-Wave Ultra-Wideband Six-Port Receiver Using Cross-Polarized Antennas Nazih Khaddaj Mallat 1 Emilia Moldovan 1 Ke Wu 2 and Serioja O. Tatu1 1 Université du Quebec Institut National de la Recherche Scientifique Centre Energie Materiauxet Telecommunications INRS-EMT 800 de la Gauchetiere Ouest R 6900 Montreal QC Canada H5A 1K6 2 Centre de Recherche Poly-Grames Ecole Polytechnique de Montreal Montreal QC Canada H3T1J4 Correspondence should be addressed to Nazih Khaddaj Mallat nazih@ Received 19 January 2009 Revised 4 May 2009 Accepted 3 July 2009 Recommended by Claude Oestges This paper presents a new low-cost millimeter-wave ultra-wideband UWB transceiver architecture operating over V-band from 60 to 64 GHz. Since the local oscillator LO power required in the operation of six-port receiver is generally low compared to conventional one using diode mixers the carrier recovery or LO synchronization is avoided by using second transmission path and cross-polarized antennas. The six-port model used in system simulation is based on S-parameters measurements of a rectangular waveguide hybrid coupler. The receiver architecture is validated by comparisons between transmitter and receiver bit sequences and bit error rate results of 500 Mb s pseudorandom QPSK signal. Copyright 2009 Nazih Khaddaj Mallat et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. Introduction Due to a rapid growth of high-speed wireless technologies new wireless systems at home and corporate environment are expected to emerge in the near future. This increasing interest for ultra-high-speed wireless connectivity has pushed the Federal Communications .