E. Hermanis
E. Hermanis has a total of 2 co-authors. Here are the top co-authors by number of shared publications:
- Modris Greitans
Institute of Electronics and Computer Science (EDI), LV-1006 Riga, Latvia
3 shared publications - Vladimir Aristov
Institute of Electronics and Computer Science, Riga, Latvia
3 shared publications
Latest Publications
- 1 November 2014
- Published by Allerton Press in Automatic Control and Computer Sciences
- Vol. 48 (6) , 375-380
Research an indirect method of calculating complex antenna impedance
In this paper, we research an indirect method of measuring the complex impedance at the end of a long line, in particular the feed impedance of wideband antennas. The method is based on a spectral analysis of incident and reflected pulses. The method is shown to be useful for certain restrictions on measuring active and reactive components in a band up to several gigahertzes.
- 1 November 2014
- Published by Allerton Press in Automatic Control and Computer Sciences
- Vol. 48 (6) , 375-380
Research an indirect method of calculating complex antenna impedance
In this paper, we research an indirect method of measuring the complex impedance at the end of a long line, in particular the feed impedance of wideband antennas. The method is based on a spectral analysis of incident and reflected pulses. The method is shown to be useful for certain restrictions on measuring active and reactive components in a band up to several gigahertzes.
- 1 August 2011
- Published by Allerton Press in Automatic Control and Computer Sciences
- Vol. 45 (4) , 218-222
Amplitude-frequency band control for oscilloscopes and signal converters
The possibility of data smoothing for the amplitude-frequency band control of oscilloscopes and signal converters is studied. It is shown that data smoothing by third-order splines differs slightly in performance compared to smoothing by a series of shifted functions Erf(t − Δt).
- 1 August 2011
- Published by Allerton Press in Automatic Control and Computer Sciences
- Vol. 45 (4) , 218-222
Amplitude-frequency band control for oscilloscopes and signal converters
The possibility of data smoothing for the amplitude-frequency band control of oscilloscopes and signal converters is studied. It is shown that data smoothing by third-order splines differs slightly in performance compared to smoothing by a series of shifted functions Erf(t − Δt).
- 1 October 2010
- Published by Allerton Press in Automatic Control and Computer Sciences
- Vol. 44 (5) , 260-265
A pulse shaper with a picosecond leading edge on an impact avalanche transit-time diode
The possibility of shaping pulses by an impact avalanche transit-time diode operating in the abnormal mode is studied. A schematic diagram realizing the pulse shaping is presented. The results of environmental tests of the circuit and results of simulation demonstrating the efficiency of the proposed mode for obtaining pulses with picosecond leading edges are given.
- 1 October 2010
- Published by Allerton Press in Automatic Control and Computer Sciences
- Vol. 44 (5) , 260-265
A pulse shaper with a picosecond leading edge on an impact avalanche transit-time diode
The possibility of shaping pulses by an impact avalanche transit-time diode operating in the abnormal mode is studied. A schematic diagram realizing the pulse shaping is presented. The results of environmental tests of the circuit and results of simulation demonstrating the efficiency of the proposed mode for obtaining pulses with picosecond leading edges are given.