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All Active MMIC-Based Wireless Communication at 220 GHz

All Active MMIC-Based Wireless Communication at 220 GHz,10.1109/TTHZ.2011.2160021,IEEE Transactions on Terahertz Science and Technology,Ingmar Kallfas

All Active MMIC-Based Wireless Communication at 220 GHz  
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A wireless data link operating at a carrier fre- quency of 220 GHz is supporting a data rate of up to 25 Gbit/s in on-off-keyed PRBS as well as complex 256-QAM (quadra- ture amplitude modulation) transmission. The millimeter-wave transmit and receive frontends consist of active multi-functional millimeter-wave microwave integrated circuits (MMICs), realized in 50 nm mHEMT technology and packaged into split-block waveguide modules. The paper presents system considerations for wireless links in the 200-300-GHz range, discusses the design and performance of dedicated broadband transmit and receive MMICs, and presents link experiments. With an RF transmit power of 3.4-1.4 dBm in the IF frequency range from 0 to 20 GHz, a receiver conversion gain of better than 4.8 dB up to 270 GHz and an estimated noise figure of less than 7.5 dB at 220 GHz, a 2 PRBS with a data rate of up to 25 Gbit/s is transmitted over 50 cm and received with an eye diagram quality factor 3. At 10 Gbit/s, an uncorrected bit-error rate (BER) of 1.6 10 is measured over a distance of 2 m. A 256-QAM signal with approx. 14 Mbit/s is received with an uncorrected BER of 9.1 10 .
Journal: IEEE Transactions on Terahertz Science and Technology - TTHZ , vol. 1, no. 2, pp. 477-487, 2011
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