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What is load pull analysis for power amplifiers and …
Signal Processing Group Inc., technical memorandum onRF is load pull analysis for power amplifiers and how isit done? : load pull analysis is used to construct a set of contours ( typically on aSmith Chart), which determine the maximum power outputachievable with agiven load impedance. These contours are very useful in assessing the actualimpedance a device should see when it is used in an contours are constructed in the following way:The device or amplifier under test (DUT) operates betweentwo impedances,one at the input and one at the output. Between these impedances sittwotuners, an input tuner and an output load pull contoursMax power point- 1 dB- dBSignal Processing Group Inc., technical memorandum onRF function of the input tuner is to adjust the matching such that the largesignal input power is always a constant, even when the output impedanceand the output tuner is the closest match at the output is found for the optimum outputimpedance ( See earlier article about load lines and impedances).
Signal Processing Group Inc., technical memorandum on RF design. Website:www.signalpro.biz What is load pull analysis for power amplifiers and how is
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