A Review of 5G Power Amplifier Design at cm-Wave and mm-Wave Frequencies

Figure 13

(a) Simplified circuitry schematic of the differential cascode SiGe PA used in [33]; (b) simplified block diagram of our CMOS envelope modulator with its connection to the differential cascode SiGe PA on the same die; (c) chip micrograph of the world-first single-chip ET-PA (1.1 × 1.5 mm²); (d) measured overall PAE and EVM (at ) of the single-chip ET-PA for the LTE 16 QAM 5 MHz signal at 0.8/1.75/2.4 GHz.

(a)

(b)

(c)

(d)