Search results for: R. Simniskis

Items from 1 to 15 out of 15 results

chapter

Resistive sensor for high power microwave pulse measurement

M. Dagys, Z. Kancleris, P. Ragulis, R. Simniskis

2011 International Conference on Electromagnetics in Advanced Applications > 43 - 46

2011 Int'l Conf. on Electromagnetics in Advanced Applications & IEEE-APS Topical Conf. on Antennas & Propagation in Wireless Communications (ICEAA)

A resistive sensor (RS) devoted to the measurement of a high power microwave (HPM) pulse is presented. The performance of the RS is based on electron heating effect in semiconductor. It can measure HPM pulses directly; it is resistant to large power overloads and demonstrates very good long-term stability. The RS can produce an output signal of the order of a few tens of Volts without any amplification...

article

Experimental Investigation of High Pulse Power Microwave Resistive Sensor with Flat Frequency Response

Ž. Kancleris, R. Simniškis, M. Dagys, V. Tamošiūnas, more

Acta Physica Polonica A > 2009 > 115 > 6 > 1122-1124

Two types of resistive sensors with flat frequency response for microwave pulse power measurements in X-band rectangular waveguide WR-90 up to 100 kW were developed and experimentally investigated. The first type of the sensors demonstrates higher sensitivity and larger output signal, while the second one exhibits better linearity of the output signal. The experimental investigations revealed the...

article

Terahertz imaging with bow-tie InGaAs-based diode with broken symmetry

I. Kasalynas, D. Seliuta, R. Simniskis, V. Tamosiunas, more

Electronics Letters > 2009 > 45 > 16 > 833 - 835

A silicon-lens coupled bow-tie InGaAs-based diode with broken symmetry is demonstrated for terahertz imaging applications below 1 THz at room temperature. Transient features and the dynamic range of the bow-tie InGaAs-based sensor are explored experimentally, proving the possibility to use the device in real-time imaging systems. Response time is found to be less than 7 ns, responsivity of 0.1 mA/W,...

chapter

The response rate of room temperature terahertz InGaAs-based bow-tie detector with broken symmetry

I. Kasalynas, D. Seliuta, R. Simniskis, V. Tamosiunas, more

2008 33rd International Conference on Infrared, Millimeter and Terahertz Waves > 1

2008 33rd International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2008)

A bow-tie InGaAs with broken symmetry has been designed for terahertz detection at room temperature. An active part of the detector consists of a two-dimensional electron gas which is heated non-uniformly with incident radiation. Main detector performances are operation in a passive scheme, flat frequency response up to 1 THz, the voltage sensitivity of about 5 V/W, the noise equivalent power of roughly...

article

Experimental Investigation of Resistive Sensor for High Power Millimetre Wave Pulse Measurement

R. Simniškis, M. Dagys, Ž. Kancleris, V. Tamošiūnas

Acta Physica Polonica A > 2008 > 113 > 3 > 1091-1094

An experimental investigation of a high power millimetre wave pulse sensor is presented. Two groups of sensors with a flat frequency response were fabricated according to results of the optimisation. The frequency response and voltage standing wave ratio were measured and compared with results of the electrodynamical simulations. The largest measured sensitivity variation of the best sensors within...

article

X-band resistive sensor for high-power microwave pulse measurement with flat frequency response

Z. Kancleris, R. Simniskis, M. Dagys, V. Tamosiunas

Electronics Letters > 2008 > 44 > 19 > 1143 - 1144

An experimental investigation of a resistive sensor used for measuring high-power microwave pulse radiation in the X-band (waveguide WR-90) is presented. The resistive sensor was fabricated in accordance with the results of the numerical simulation providing a flat frequency response. Experimentally, a %10% sensitivity variation has been obtained within the waveguide%s frequency range.

chapter

Resistive sensor for high power millimetre wave pulse measurement

Z. Kancleris, M. Dagys, R. Simniskis, V. Tamosiunas

2007 European Microwave Conference > 356 - 359

EuMC 2007. 37th European Microwave Conference

A high power millimetre wave pulse sensor for 78-118 GHz frequency range has been developed. A finite difference time domain method was applied to optimise the sensor's frequency response. Two groups of sensors were manufactured and tested experimentally. A voltage standing wave ratio and dependence of the output signal on pulsed power have been measured. The sensor has been tested up to 2 kW pulse...

article

High power millimetre wave pulse sensor for W-band

Z. Kancleris, R. Simniskis, M. Dagys, V. Tamosiunas

IET Microwaves, Antennas & Propagation > 2007 > 1 > 3

A resistive sensor for high power millimetre wave pulse measurement in a frequency range 78-118 GHz (W-band) has been developed. Two sensing elements mounted on a wide wall of a waveguide were employed to measure pulse propagating in the waveguide with 2.4times1.2 mm² window size. A finite difference time domain method was applied to engineer the sensor with optimised frequency response. Two groups...

article

Numerical investigation of resonances within the X-band waveguide type

Z. Kancleris, V. Tamosiunas, M. Dagys, R. Simniskis, more

IEEE Microwave and Wireless Components Letters > 2006 > 16 > 7 > 422 - 424

In this letter, we report on the numerical investigation of resonances within waveguide type resistive sensors used for measuring high power microwave pulse radiation in the X-band. We have applied a finite-difference time-domain method to determine the dependencies of the average electric field and its distribution on frequency for several sets of dimensions and specific resistances of the sample

article

Resistive Sensor for Short High-Power Microwave Pulse Measurement in Millimeter Wave Range

V. Tamošiūnas, Ž Kancleris, M. Dagys, R. Simniškis, more

Acta Physica Polonica A > 2005 > 107 > 2 > 420-424

We report on the numerical investigation of the resistive sensor for the 78-118 GHz range. A three-dimensional finite-difference time-domain method was applied to simulate the wave propagation within a waveguide segment with the semiconductor sensor attached to a wider wall of the wave-guide. The electric field distribution, voltage standing-wave ratio and the average electric field dependences on...

article

Finite-Difference Time-Domain Simulation of Mid- and Far-Infrared Quantum Cascade Lasers

V. Tamošiūnas, Ž. Kancleris, M. Dagys, R. Simniškis, more

Acta Physica Polonica A > 2005 > 107 > 1 > 179-183

We present simulations of mid- and far-infrared quantum cascade lasers operating with/without external magnetic field. Maxwell-Bloch solver based on the finite-difference time-domain method was used in our investigation. Reduction of the far-infrared quantum cascade laser emission intensity is associated with increased optical losses in highly doped layers when magnetic field is changed from 4.2 T...

article

X-Band Resistive Sensors for Short High-Power Microwave Pulse Monitoring

M. Dagys, Z. Kancleris, R. Simniskis, E. Schamiloglu, more

00029th European Microwave Conference, 01999 > 1999 > 2 > 65 - 68

29th European Microwave Conference, 1999

We propose to use a resistive sensor for nanosecond duration high-power microwave pulse monitoring. The designed sensor is sufficiently fast to measure nanosecond duration microwave pulses, can directly handle microwave pulse power up to 70 kW and outputs the signal up to a few tens of volts without any amplification.

article

Direct measurement of short high power microwave pulses

M Dagys, Z Kancleris, V Orsevskis, R Simniskis

01995 00025th European Microwave Conference > 1995 > 2 > 1270 - 1274

1995 25th European Microwave Conference

The power heads with resistive sensor (RS) made from low specific resistance n-Si are designed and investigated. They are used to measure high power microwave pulses, which duration lies in the range of 5-200 ns. Using DC pulse supply for RS feed the output signal of the order of a few tens of volts is obtained without any amplification. Maximum peak pulse power detected by designed power head is...

article

Microwave pulsed high power measurement in a free space making use of resistive sensors

M. Dagys, Z. Kancleris, R. Simniskis, M. Backstrom, more

01993 00023rd European Microwave Conference > 1993 > 506 - 507

1993 23rd European Microwave Conference

Making use of a horn antenna connected to a resistive head together with a matched load, high microwave pulsed power density measurement has been performed in a free space. Experiments were carried out in S, X and Q bands at a frequencies 2.75 GHz, 9.2 GHz and 34.2 GHz, respectively. For the first time, microwave pulsed power densities up to a few hundred kW/m2 have been detected.

article

Resistive Sensors for High Pulse Power Microwave Measurements

R. Baltusis, M. Dagys, R. Simniskis

01992 00022nd European Microwave Conference > 1992 > 1 > 169 - 173

1992 22nd European Microwave Conference

Original resistive sensors (RS) based on the effect of semiconductor bulk resistance change due to microwave electric field are designed. The resistive sensors are developed for high pulse power (1W-lOOkW) measurements in rectangular waveguides. Resistive sensors have fast response time, high reliability and overload resistance.

Filter options

Publication date

Set your own date range

Publication type

article (12)
book (3)

Keywords

FREQUENCY RESPONSE (4)
85.30.DE (3)
FINITE DIFFERENCE TIME-DOMAIN ANALYSIS (3)
PULSE MEASUREMENT (3)
72.20.HT (2)
72.30.+Q (2)
FINITE DIFFERENCE TIME DOMAIN METHOD (2)
III-V SEMICONDUCTORS (2)
INDIUM COMPOUNDS (2)
INGAAS (2)
MICROWAVE MEASUREMENT (2)
MILLIMETRE WAVE DETECTORS (2)
RESISTIVE SENSOR (2)
WAVEGUIDES (2)
7.57.KP (1)
2 KW (1)
78 TO 118 GHZ (1)
78.66.-W (1)
81.05.-T (1)
81.05.EA (1)
81.05.RM (1)
BOW-TIE INGAAS-BASED DIODE (1)
BROKEN SYMMETRY (1)
DETECTORS (1)
ELECTRIC SENSING DEVICES (1)
FDTD (1)
FDTD METHODS (1)
FINITE-DIFFERENCE TIME-DOMAIN (FDTD) METHODS (1)
FINITE-DIFFERENCE TIME-DOMAIN METHODS (1)
FLAT FREQUENCY RESPONSE (1)
FREQUENCY 78 GHZ TO 118 GHZ (1)
GALLIUM ARSENIDE (1)
HIGH POWER MILLIMETRE WAVE PULSE MEASUREMENT (1)
HIGH POWER MILLIMETRE WAVE PULSE SENSOR (1)
HIGH-POWER MICROWAVE PULSE MEASUREMENT (1)
INDIUM GALLIUM ARSENIDE (1)
LASER EXCITATION (1)
LASER MODES (1)
MICROWAVE DETECTORS (1)
MICROWAVE MEASUREMENTS (1)
MICROWAVE PULSE RADIATION (1)
MILLIMETRE WAVE PULSE MEASUREMENT (1)
NOISE EQUIVALENT POWER (1)
OPTICAL RESONATORS (1)
OPTICAL TRANSMITTERS (1)
OPTIMISED FREQUENCY RESPONSE (1)
PULSE PROPAGATION (1)
PULSE SENSOR (1)
RECTANGULAR WAVEGUIDE WR-90 (1)
RECTANGULAR WAVEGUIDES (1)
SEMICONDUCTOR DIODES (1)
SUBMILLIMETRE WAVE IMAGING (1)
TEMPERATURE 293 K TO 298 K (1)
TEMPERATURE SENSORS (1)
TERAHERTZ BOW-TIE DETECTOR (1)
TERAHERTZ IMAGING (1)
TERAHERTZ WAVE DETECTORS (1)
TERAHERTZ WAVE IMAGING (1)
TWO-DIMENSIONAL ELECTRON GAS (1)
VOLTAGE STANDING WAVE RATIO (1)
W-BAND (1)
WAVEGUIDE (1)
WAVEGUIDE TYPE RESISTIVE SENSORS (1)
X-BAND RESISTIVE SENSOR FABRICATION (1)
more

Data set

ieee (11)
PSJD (4)

INFONA - science communication portal

Search results for: R. Simniskis

Resistive sensor for high power microwave pulse measurement

Experimental Investigation of High Pulse Power Microwave Resistive Sensor with Flat Frequency Response

Terahertz imaging with bow-tie InGaAs-based diode with broken symmetry

The response rate of room temperature terahertz InGaAs-based bow-tie detector with broken symmetry

Experimental Investigation of Resistive Sensor for High Power Millimetre Wave Pulse Measurement

X-band resistive sensor for high-power microwave pulse measurement with flat frequency response

Resistive sensor for high power millimetre wave pulse measurement

High power millimetre wave pulse sensor for W-band

Numerical investigation of resonances within the X-band waveguide type

Resistive Sensor for Short High-Power Microwave Pulse Measurement in Millimeter Wave Range

Finite-Difference Time-Domain Simulation of Mid- and Far-Infrared Quantum Cascade Lasers

X-Band Resistive Sensors for Short High-Power Microwave Pulse Monitoring

Direct measurement of short high power microwave pulses

Microwave pulsed high power measurement in a free space making use of resistive sensors

Resistive Sensors for High Pulse Power Microwave Measurements

Filter options

Publication date

Publication type

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: R. Simniskis

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Publication type

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options