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An active load-pull technique creating time-variant impedances to emulate coupling between power amplifiers

Dhecha Nopchinda (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik) ; Koen Buisman (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik)
IEEE MTT-S International Microwave Symposium Digest (0149-645X). p. 1437-1440. (2017)
[Konferensbidrag, refereegranskat]

A method for emulating antenna array coupling effects, based on active load-pull, to present time-varying impedances to power amplifiers is presented. An entire array, given identical elements, can be emulated using a single device-under-test. The method is demonstrated and verified by studying two scenarios, where the resulting adjacent channel power ratio and error-vector magnitude are given as function of delay and coupling for a 6W GaN power amplifier. Differences in adjacent channel power ratio and error-vector magnitude can be attributed to time-variant load impedances.

Nyckelord: 5G mobile communication , Arrays , Coupling , Distortion , Load-pull , Power amplifiers



Denna post skapades 2017-12-08. Senast ändrad 2017-12-21.
CPL Pubid: 253655

 

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