Hledat
Zobrazují se záznamy 1-8 z 8
The Distributed Oscillator at 4 GHz
(IEEE, 1998-12)
This paper describes the design and experimental verification of a tunable oscillator based on a microwave distributed amplifier. The oscillator met design expectations, being capable of continuous tuning over the range ...
Active Resonator
(IEEE, 2001-07)
A new electrical component-active resonator-is designed. The component consists of a common passive resonant circuit whose losses are compensated by an extra active circuit. Experimental verification was done with a TE/sub ...
First results of microwave measurement of broadband radio interference filters
(IEEE, 2004-12)
A vector measurement method for testing multiport interference filters for shielded chambers has been used. Measured data up to 3 GHz are presented. The authors believe that this is the first time such results have been published.
Stability of FDTD in Curvilinear Coordinates
(IEEE, 2001-07)
A new approach suitable for determination of the maximal stable time step for the finite-difference time domain (FDTD) algorithm in curvilinear coordinates is presented. It is based on a modified variable separation method, ...
A New Concept of PTP Vector Network Analyzer
(IEEE, 2004-12)
A new concept for vector network analyzers design based on a perturbation two-port (PTP) is presented. The approach uses redundant states of the PTP. The best states of the PTP for a certain place in Smith chart and frequency ...
On radio interference filter measurement
(IEEE, 2003-12)
A new measurement method for on site testing of multiport radio interference filters (RIF) on shielded chamber is designed. The method is based on scalar measurement only and makes possible a pessimistic estimate of the ...
Evaluation and Correction of Cable Phase Stability in High Frequency Near-Field Measurement
(IEEE, 2008-04)
In case of the near-field measurement, the radiated field by the measured antenna is received by two- dimensional scanner in defined points. During the process of the field scanning, the cable between the VNA and the scanner ...
Hidden Problems in Precise Calibration on Microstrip
(IEEE, 2008-12)
A study of calibration problems on microstrip with respect to interaction of electromagnetic fields around SMA to microstrip launcher and microstrip short was carried out in frequency band up to 26 GHz. Omni Spectra SMA ...