Ultra-wide-band (UWB) technology combined with multiple transmit and receive antennas (MIMO) is a viable way to achieve data rates of more than 1 Gb/s for wireless communications. UWB is typically applied to short-range and therefore mainly indoor c
Abstract—In this paper, we present a performance analysis of a smart antenna system operating in a wide-band CDMA wireless- local-loop channel using a beam-forming module (BFM) that has been implemented on a digital signal processor (TMS320C6701) bo
A band-stop angular filter (BSF) based on hump volume Bragg gratings (HVBGs) is proposed. Band-stop filtering in a two-stage amplifier laser system is discussed and simulated. Simulation results show that small-scale self-focusing effects in the lase
We report an above-band-gap radiative transition in the photoluminescence spectra of single crystalline Ge in the temperature range of 20~296 K. The temperature-independence of the peak position at ~0.74 eV is remarkably different from the behavior o
A novel band-rejection filter based on a Bragg fiber with a defect layer is proposed. A defect layer is introduced in the periodic high/low index layers in the cladding of the Bragg fiber, which results in large confinement loss for some resonant wav
We propose and experimentally demonstrate a novel scheme to realize polarization-division-multiplexing quadrature-phase-shift-keying (PDM-QPSK) signal transmission over fiber, wireless and fiber at W-band (75-110 GHz). The generation of polarization
笙科电子(AMICCOM)为亚洲地区IC设计公司中，同时专长于SRD(短距离无线通信)与卫星通讯LNB的射频IC设计公司。笙科电子于2014年8月发表新一代S-Bnad的卫星通讯产品，命名为A7837。A7837为S-Band Down Converter LNB卫星接收芯片，适用于卫星降频接收器，已完成量产程序并供货。
A7837为S-band卫星降频接收芯片，支持2.52~2.67GHz频段，并内建极性电压侦测器(Polarity Voltage Detector)，并可直接驱
Test results for a 10-Gbps prototype demonstrator working at 71~76 GHz frequency band with a 2-bit/s/Hz spectral efficiency are reported. To overcome the speed limitation of the commercial DA/ADs, a two-channel analog IF multiplexing and demultiplexi
