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A microstrip quasi-horn antenna for UWB radars and sensors has been developed. The antenna achieves good performance in both frequency domain for CW signals from 0.3-6 GHz and time domain for monocycle pulses of various durations. The time-domain measurement, particularly, shows that the antenna can transmit and receive monocycle pulses effectively with minimum distortion, little ringing, and small...
A fully integrated ultra-broadband transmit/receive (T/R) switch has been developed using nMOS transistors with a deep n-well in a standard 0.18-mum CMOS process, and demonstrates unprecedented insertion loss, isolation, power handling, and linearity. The new CMOS T/R switch exploits patterned-ground-shield on-chip inductors together with MOSFET's parasitic capacitances to synthesize artificial transmission...
A new ultra-wideband (UWB) transmitter capable of producing multiple monocycle pulses has been developed for UWB radar and communication systems. The developed transmitter is simple, compact and can be realized using planar or uniplanar integrated circuits. Measurement results show multiple monocycle pulses with duration from 0.4-1.2 ns, corresponding approximately to 0.2-3.9 GHz operating frequency...
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