DocumentCode :
1156464
Title :
70-GHz-band MMIC transceiver with integrated antenna diversity system: application of receiver-module-arrayed self-heterodyne technique
Author :
Shoji, Yozo ; Ogawa, Hiroyo
Author_Institution :
Commun. Res. Lab. Inc. Administrative Agency, Kanagawa, Japan
Volume :
52
Issue :
11
fYear :
2004
Firstpage :
2541
Lastpage :
2549
Abstract :
Our proposed millimeter-wave self-heterodyne transmission technique is a simple and cost-effective solution to frequency stability problems in millimeter-wave access systems. In addition, this technique enables integration of a high-sensitivity receiver with a combining antenna diversity system that is approximately as effective as a maximal-ratio-combining antenna diversity system for all directions of signal arrival. We explain how our newly developed 70-GHz-band transceiver using the millimeter-wave self-heterodyne transmission technique with a receiver-module array can greatly improve receiver sensitivity for all directions of signal arrival i.e., without affecting the signal reception beam pattern and how this can solve the signal-fading problem in a multipath signal propagation environment. We also theoretically demonstrate that receiver sensitivity improves in proportion to the number of elements in a receiver-module array, and experimentally confirm this using an experimental 70-GHz-band monolithic microwave integrated circuit transceiver with a 4×2 receiver-module array. We show that millimeter-wave signal propagation can be modeled using a two-path model, and that serious signal fading depends on the transceiver height and transmission distance. Carrier and modulated signal transmission experiments using our developed transceiver have revealed that use of a receiver-module array greatly reduces the signal-fading problem in a multipath signal propagation environment. In the signal transmission experiment, we succeeded in transmitting an orthogonal frequency-division multiplexing signal over a 4-m transmission distance with bit-error-free performance.
Keywords :
MMIC; antenna arrays; array signal processing; diversity reception; fading; frequency division multiplexing; millimetre wave devices; multipath channels; transceivers; 70 GHz; MMIC transceiver; antenna diversity system; carrier signal transmission; frequency division multiplexing; frequency stability; high sensitivity receiver; integrated antenna diversity system; millimeter wave access systems; modulated signal transmission; monolithic microwave integrated circuit; multipath signal propagation environment; self heterodyne transmission technique; signal fading; signal reception beam pattern; Directive antennas; Diversity reception; Frequency; MMICs; Microwave antenna arrays; Microwave propagation; Millimeter wave propagation; Millimeter wave technology; Receiving antennas; Transceivers; 65; 70 GHz; Antenna diversity; MMIC; frequency offset; maximal ratio combining; millimeter wave; monolithic microwave integrated circuit; phase noise; receiver sensitivity; receiver-module array; self-heterodyne;
fLanguage :
English
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9480
Type :
jour
DOI :
10.1109/TMTT.2004.837160
Filename :
1353538
Link To Document :
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