3 research outputs found
The Experimental UWB Link
The experimental results from simple ultra
wideband link are presented. The UWB link consisting of typical
broadband microwave circuits built of commercially available
components is able to send and detect unmodulated broadband
electrical pulses with 20 MHz pulse repetition frequency. The
system operates with approximately 60% of fractional
bandwidth in 4GHz band with spectral density of -140dBW/Hz
Noise Figure Measurement of Highly Mismatched DUT
A device mismatch seriously degrades the accuracy of its noise figure characterization. A new second stage correction technique for highly mismatched device under test is proposed and compared to the standard technique. The presented method is based on additional vector measurement. It takes into account measuring receiver noise figure dependence on the DUT output mismatch besides an available gain correction. Significant accuracy improvement of measured data and decreased error variation is demonstrated. The suggested method is in principle able to eliminate all systematic errors in noise figure measurement
The Experimental UWB Link
The experimental results from simple ultra
wideband link are presented. The UWB link consisting of typical
broadband microwave circuits built of commercially available
components is able to send and detect unmodulated broadband
electrical pulses with 20 MHz pulse repetition frequency. The
system operates with approximately 60% of fractional
bandwidth in 4GHz band with spectral density of -140dBW/Hz