Title :
Doherty power amplifier with lumped non-foster impedance inverter
Author :
Ledezma, Luis M.
Author_Institution :
Qorvo - Infrastruct. & Defense Products, Richardson, TX, USA
Abstract :
We demonstrate preliminary results on a broadband and compact output combining network for Doherty power amplifiers. It uses negative capacitors or inductors to provide wideband impedance inversion. The negative elements can be absorbed into the nearby matching networks and can be used to partially or completely cancel out some reactances further decreasing the size and cost of the implementation.
Keywords :
capacitors; impedance matching; inductors; invertors; power amplifiers; Doherty power amplifiers; broadband output combining network; compact output combining network; inductors; lumped non-foster impedance inverter; nearby matching networks; negative capacitors; negative elements; reactances; wideband impedance inversion; Bandwidth; Broadband communication; Capacitors; Delay lines; Impedance; Inductors; Inverters; PA efficiency; Peak to average power ratio (PAPR); long-term evolution (LTE); power amplifiers (PA); power back-off;
Conference_Titel :
Wireless and Microwave Circuits and Systems (WMCS), 2015 Texas Symposium on
Conference_Location :
Waco, TX
DOI :
10.1109/WMCaS.2015.7233210
