A reader module at 60 GHz for high data-rate short-range backscattering-based communications is presented. The reader consists of a CMOS-based oscillator, amplifiers, and a mixer on a low-temperature co-fired ceramic (LTCC) substrate. The filter, power splitter, and antennas are directly patterned on the LTCC. All millimeter-wave components are contained within the module and the only interfaces to the module are the IF and bias lines. Transmit power of the module is +11.6-dBm effective isotropic radiated power with an IF bandwidth of 400 MHz. The LTCC module measures 13 24 mm 2 and has a dc power consumption of 130 mW. Reception of a 20-MHz square wave from a tag 5 cm apart from the reader is demonstrated; the suggested millimeter-wave identification concept enables a 10 2 -10 3 -fold data-rate increase in comparison to the present near-field communication technique, with similar size, range, and power consumption of the reader. Index Terms-Backscattering modulation, CMOS, low-temperature co-fired ceramic (LTCC), millimeter-wave identification (MMID), monolithic microwave integrated circuit (MMIC), RF identification (RFID), 60 GHz.
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