Kao, K.-Y.K.-Y.KaoLin, H.-Y.H.-Y.LinKUN-YOU LIN2020-06-112020-06-112016-08-09https://scholars.lib.ntu.edu.tw/handle/123456789/499097This paper proposes a load-split derivative superposition (DS) linearization technique applied to a K-band CMOS power amplifier (PA). Conventional DS is usually used to cancel high-order transconductance nonlinearity. However, low input impedance leading to gain degradation limits the application of this technique. In order to solve this problem, a common-drain buffer is used as an input replica to split the extra loading from the auxiliary DS path, which effectively increases the input impedance. The proposed PA demonstrates a superior third-order intermodulation (IM3) distortion cancellation. The sweet-spot of IM3 is close to output 1-dB compression power (OP1dB) without severe small-signal gain degradation.derivative superpositionIntermodulation distortion (IMD)linearizationpower amplifiers (PA)[SDGs]SDG7conference paper10.1109/MWSYM.2016.75401352-s2.0-84984984962https://www.scopus.com/inward/record.uri?eid=2-s2.0-84984984962&doi=10.1109%2fMWSYM.2016.7540135&partnerID=40&md5=72dd7cecc0cca47672a8e31c1bbacf5e