| 1. |
- Gustafsson, Sebastian, 1990, et al.
(författare)
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Wideband RF characterization setup with high dynamic range low frequency measurement capabilities
- 2016
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Ingår i: 2016 87th ARFTG Microwave Measurement Conference. - 9781509013081
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Konferensbidrag (refereegranskat)abstract
- In this paper, a wideband RF characterization setup with low-frequency (LF) measurement capabilities is presented. Simultaneous LF and RF measurements enable studies of trapping phenomena, thermal effects and other LF-related nonlinear distortion in microwave devices using realistic wideband RF stimuli. The setup is capable of measuring up to 4 GHz through the RF path, and from DC to 125 MHz through the LF path. A study is made on how device linearity is affected by the choice of power supply unit (PSU). LF measurements reveal significant differences in baseband termination in the PSUs, consequently affecting the linearity of the measured RF output spectrum.
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| 2. |
- Rahiminejad, Sofia, 1987, et al.
(författare)
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AMC pin waveguide flange for screw redundant millimeter and submillimeter measurements
- 2016
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Ingår i: 87th ARFTG Microwave Measurement Conference: Measurements for Emerging Communications Technologies, ARFTG 2016. - 9781509013081 ; , s. 7501946-
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Konferensbidrag (refereegranskat)abstract
- Measurements with waveguide flanges at frequencies above 100GHz have a considerable issue with leakage due to problems with achieving good electrical contact between the opposite flanges. The higher the frequency, the higher is the requirement for full contact. However, by using an artificial magnetic conducting (AMC) flange on one side of the interface, full electric contact is not needed between the two joining flanges. The AMC is realized as a pin-surface, and the leakage is stopped by a parallel-plate stopband like in gap waveguides. This paper describes how these AMC pin waveguide flanges can be used for screw redundant measurements.
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