题目/Title：A 13.3 mW 500 Mb/s IR-UWB Transceiver With Link Margin Enhancement Technique for Meter-Range Communications

作者/Author：
                        Shuli Geng,Dang Liu,Yanfeng Li,Huiying Zhuo,Woogeun Rhee,Zhihua Wang

期刊/Journal：IEEE Journal of Solid-State Circuits

年份/Issue Date：2015Mar.

卷（期）及页码/Volume（No.）&pages：Vol.50, No.3, pp. 669 - 678

摘要/Abstract：
This paper describes a link margin enhancement method for high data rate impulse-radio ultra-wideband (IR-UWB) transceiver systems. To overcome a trade-off between link margin and spectrum compliance in the pulse based UWB system, a spectrum-efficient frequency hopping (FH) technique is proposed to increase average transmission power without violating the spectrum mask. An energy detection receiver is used to convert a frequency hopping signal to a baseband signal with the original bandwidth, thus improving the signal-to-noise ratio. A 500 Mb/s 7.25-9.5 GHz UWB transceiver is implemented in 65 nm CMOS. Having eight sub-bands with 50% overlap, the transceiver exhibits a meter-range communication capability with a 9 dB link margin enhancement. The transceiver consumes 13.3 mW from a 1 V supply, achieving an energy efficiency of 26.6 pJ/bit.