论文标题
接收器带宽扩展超出Nyquist，使用频道粘结
Receiver Bandwidth Extension Beyond Nyquist Using Channel Bonding
论文作者
论文摘要
当前和即将到来的沟通和传感技术需要更大的带宽。通道键合可用于将接收器的瞬时带宽扩展到单个转换器的Nyquist极限之外。理论上在本文中介绍，实现和评估了两种潜在的联合前端和转换器设计方法。 Xilinx RFSOC平台及其5 GSA/S对数字转换器（ADC）的类似物（ADC）用于实现基于混合耦合器的相位/正交（I/Q）采样（I/Q）采样，也可以实现时间间隔采样方法以及通道键。证明这两种实现都能够重建5 GHz的瞬时带宽，最高49 dB图像排斥比（IRR）通常在4到8 dB之内，前端的理论极限。
Current and upcoming communication and sensing technologies require ever larger bandwidths. Channel bonding can be utilized to extend a receiver's instantaneous bandwidth beyond a single converter's Nyquist limit. Two potential joint front-end and converter design approaches are theoretically introduced, realized and evaluated in this paper. The Xilinx RFSoC platform with its 5 GSa/s analog to digital converters (ADCs) is used to implement both a hybrid coupler based in-phase/quadrature (I/Q) sampling and a time-interleaved sampling approach along with channel bonding. Both realizations are demonstrated to be able to reconstruct instantaneous bandwidths of 5 GHz with up to 49 dB image rejection ratio (IRR) typically within 4 to 8 dB the front-ends' theoretical limits.
