A 0.7–2.5 GHz, 61% EIRP System Efficiency, Four-Element MIMO TX System Exploiting Integrated Power-Relaxed Power Amplifiers and an Analog Spatial De-Interleaver
Linearized Dual-Band Power Amplifiers With Integrated Baluns in 65 nm CMOS for a 2$\, \times \,$2 802.11n MIMO WLAN SoC