High power millimetre wave pulse sensor for W-band

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

doi:10.1049/iet-map:20070015

Cited by 16 publications

(14 citation statements)

References 4 publications

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“…The solid lines in Fig. 3 show a two-term approximation (2), from which the values of the parameters A and B were determined. It is seen that the used approximation fits well the measured results.…”

Section: Measurement Results and Discussionmentioning

confidence: 99%

“…The measurements have been performed with and without an additional amplifier, the amplification of which was K = 10. It is well known [1] that in a wide range of the microwave pulse power, the dependence of ΔR/R on P can be approximated by the second order polynomial in the following way: (2) where the coefficients A and B are determined by fitting the experimentally measured dependence of DR/R on P with (2). In the linear region, DR/R << 1 and the influence of the second term in (2) is negligible.…”

Section: Sensitivity and Measurement Set-upmentioning

confidence: 99%

“…The electric field of the microwave pulse heats electrons in the SE, its resistance increases, and by measuring this resistance change the microwave pulse power in the waveguide is determined [1]. Although the characteristics of a waveguide type RS were improved significantly devoting special attention to its frequency response [2,3], the main disadvantage of the RS is a narrow frequency range limited by the pass-band of the rectangular waveguide.…”

Section: Introductionmentioning

confidence: 99%

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Wide band waveguide sensor for microwave pulse measurement

Kancleris¹,

Ragulis²,

Simniškis³

et al. 2013

Lith. J. Phys.

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A wide band resistive sensor, the performance of which is based on electron heating effect in semiconductors, has been implemented in a double ridge waveguide WRD250 in a frequency range of 2.6-7.8 GHz. The dependences of the output signal on microwave pulse power and frequency response of the sensor were measured. The measured results of frequency response have been compared with the calculated ones obtained using a finite-difference time-domain method, and a reasonable agreement between them was found.

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Section: Measurement Results and Discussionmentioning

confidence: 99%

Section: Sensitivity and Measurement Set-upmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Wide band waveguide sensor for microwave pulse measurement

Kancleris¹,

Ragulis²,

Simniškis³

et al. 2013

Lith. J. Phys.

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“…Several types of RSs with a flat frequency response in the rectangular waveguide have been designed and realised: the cross-waveguide type RS with the SE the height of which is equal to the narrow wall of the waveguide [2], the RS with a diaphragm where the SE is placed between a thin metal foil and the wide wall of the waveguide [3,4], and the RS with two sensing elements the height of which is much less than the narrow wall of the waveguide [5,6]. The main disadvantage of the waveguide type RS is a narrow frequency range where the particular sensor can be used.…”

Section: Introductionmentioning

confidence: 99%

“…As in [5,6] the layout with two sensing elements was considered. They were placed in the gap region on the surface of the metal ridge.…”

Section: Introductionmentioning

confidence: 99%

Interaction of semiconductor sample with TE<sub>10</sub> mode in double ridged waveguide

Kancleris¹,

Ragulis²

2012

Lith. J. Phys.

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An interaction of a semiconductor sample inserted in the centre of a double ridge waveguide between its metal ridges with TE 10 mode was investigated. A three-dimensional finite-difference time-domain method was applied for the calculation of the electromagnetic field components in the waveguide section with a semiconductor sample. The average electric field strength in the sample and the reflection coefficient were determined. This sample is considered a prototype of the sensing element (SE) of a resistive sensor (RS) the performance of which is based on electron heating effect in the semiconductor. The optimal dimensions and specific resistance of the SE have been found, providing frequency response as flat as possible for the RS in the WRD250 waveguide covering the frequency range of 2.60-7.80 GHz.

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