A Dual-Band Dual-Output Filtering Power Amplifier Based on High-Selectivity Filtering Impedance Transformer

Figure 14

Measured power spectrum density with and without DPD at (a) band 1 and (b) band 2. AM/AM and AM/PM distortion characteristics, with and without DPD, at (c) band 1 and (d) band 2.

(a)

(b)

(c)

(d)