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A fully-integrated reconfigurable dual-band (760–960 MHz and 2.4–2.5 GHz) transceiver (TRX) for short range wireless communications is presented. The TRX consists of two individually-optimized RF front-ends for each band and one shared power-scalable analog baseband. The sub-GHz receiver has achieved the maximum 75 dBc 3rd-order harmonic rejection ratio (HRR3) by inserting a Q-enhanced notch filtering...
A fully-integrated Sub-GHz low-power transceiver (TRX) for 802.11ah applications is presented. The receiver takes both advantages of Low-IF/Zero-IF architectures while supporting 1/2/8MHz reconfigurable signal bandwidth. A Σ-Δ fractional-N PLL with Class-C VCO is employed to provide the LOs. In order to enhance the power amplifier (PA) back-off efficiency, a Peak-to-Average-Power-Ratio (PAPR) tolerant...
A fully-integrated reconfigurable dual-band transceiver (TRX) is presented for short range wireless communication. The TRX has two independent RF front-ends for each band with a shared analog baseband to achieve optimum power and cost. In Sub-GHz (760–960MHz) band, the maximum 75dBc 3rd harmonic rejection ratio (HRR) is achieved by inserting a RFA with notch filtering. In 2.4GHz band, a single-ended-to-differential...
Recent advances in wireless communication and sensor technologies have opened up a new paradigm in healthcare industry. More and more attentions in the wireless body area network (WBAN) have been received recently. However, the limited network resources constrain the application development in WBAN. In this paper, we present a service-specific middleware architecture to bridge the gap between the...
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