10 research outputs found
PORTABLE NON-CONTACT MICROWAVE DOPPLER RADAR FOR RESPIRATION AND HEARTBEAT SENSING
No full textAbstract-Microwave L-band Doppler radar has been developed for pulmonic and cardiac activities investigation. Model of reflected signal spectra has been proposed, which is in qualitative agreement with both pulmonic and cardiac spectra. Distance sensitivity and penetration ability of the radar allows to quality it for typical indoor applications, as well as for life signal detection under avalanche
Figure 1: Direct Conversion Receiver DC OFFSET SUPPRESSION IN DOUBLE BALANCE DIRECT CONVERSION RECEIVERS
No full textAbstract The double balance mixer scheme in-phase signal input and double-quadrature Local Oscillator (LO) is suggested for application on IQ direct conversion receivers. The influence of the gain and phase mismatches of splitters is investigated. It is shown that a similar scheme using square-law detectors is promising on optical applications
Bandwidth and Noise of Submillimeter Wave Cuprate Bicrystal Josephson Junction Detectors
No full textAbstract-Detector
Difference frequency generation by optical rectification of femtosecond laser pulse in GaAs crystal with a periodic domain structure
No full textExperimental study of noise and Josephson oscillation linewidths in bicrystal YBCO junctions
No full text
