The policy of permanently assigning a frequency band to a single application has led to
extremely low utilization of the available spectrum. Cognitive radio, with its ability to be both …

This paper describes a compact and low-power frequency synthesizer with quadrature
phase output for software-defined radios (SDRs). The proposed synthesizer is constructed …

In-vehicle information provision services have started according to the progress of data
communication infrastructure surrounding vehicles. In such information services, a large …

Emerging wireless standards specify dozens of bands spanning several octaves, which
need to be supported in form-factor and energy constrained mobile devices targeting …

A monolithic 50 MHz-6 GHz software-defined radio transceiver with two transmit (TX) and
two receive (RX) channels to support 2× 2 MIMO is implemented in 130nm CMOS. The …

This research addresses the performance degradation in receivers due to poor selectivity.
Poor selectivity is expected to be a primary limitation on the performance of Dynamic …

A wide-band fully differential fractional-N frequency synthesizer for multi-standard
application is presented. The single fully differential LC–VCO with 28.5% tuning rang and a …

A subsampling filter is proposed for a discrete‐time receiver (DTR). This filter achieves
signal discretisation, filtering and downconversion simultaneously. With the proposed …

A digital reference-less CDR is proposed to support continuous data-rate ranging from 1
Gbps to 16 Gbps. The CDR adopts an 8 GHz~ 16 GHz DCO to achieve low random noise …

A digital RF receiver front-end employing a DT filter is proposed for application to m-WiMAX
& The SAW-less receiver architecture, where the large out-of-band interferer can be rejected …