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A linear impulse radio ultra wideband MIMO radar array is presented. The IR-UWB imaging array is true time delay based. The imaging system is implemented using an impulse radio radar transceiver which is realized in 90 nm CMOS technology. The transceiver has programmable coarse, medium and fine delay lines which facilitate an electronic beamsteering with high resolution. A calibration circuit and...
An UWB impulse radio receiving antenna array based on delay and sum beamforming is presented. The array is implemented using a simple impulse radio radar transceiver. The presented radar transceiver is fabricated in 90 nm TSMC technology, and it has a high speed sampler with sampling rate of 10 GHz which recovers the received signal with sufficient resolution. Using a programmable delay element with...
This brief presents a continuous-time impulse radio ultrawideband transmitter. The transmitter is a part of a high-precision ranging single-chip transceiver that measures the time-of-flight symbol propagation. The clock burst generator in the transmitter will initiate symbol transmission in continuous time unbounded by any clock signal while maintaining an accurate chip rate during symbol transmission...
A low-power impulse radio (IR) ultra wideband (UWB) pulse generator (PG) is presented. It uses digital gate-delay for timing achieving good power efficiency and acceptable spectral filling. The circuit is scalable in both bandwidth and center frequency. Both energy consumption and chip area are reduced compared to most conventional higher order Gaussian PGs. The PG is realized in a TSMC 90 nm CMOS...
In this paper, we present a novel symbol detector architecture using time-domain running cross-correlation intended for impulse radio UWB communication. A bold new perspective on system design processing (CTBV) completely in continuous time is proposed and an implementation is carried out in 90 nm TSMC low power process technology. By exploring CTBV coding and unique combinational circuits for signal...
A new circuit topology for quadrature signal generation is presented. In the proposed circuit two identical negative-resistance oscillators are coupled to each other via capacitors in such a way that quadrature signals are generated. An analysis of the linearized model of the circuit is presented. Since capacitors are used as coupling devices, the proposed circuit has the advantage that no extra noise...
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