Computer Sciences and Information Technology
Title : | High Efficiency Power Amplifiers for 5G and beyond |
Area of research : | Computer Sciences and Information Technology |
Principal Investigator : | Prof. Jayanta Mukherjee, Indian Institute Of Technology (IIT) Bombay, Maharashtra |
Timeline Start Year : | 2024 |
Timeline End Year : | 2027 |
Contact info : | jayanta@ee.iitb.ac.in |
Equipments : | RF design software
EM Design Software |
Details
Executive Summary : | The 5G standard aims to improve wireless communication performance by improving bit error rate (BER), latency, and power dissipation. Power Amplifiers (PA) are key components in RF front ends of 5G devices, with the sub 6 GHz band currently operational. With carrier aggregation and flexible numerology, wider bandwidths are achieved, and higher peak to average power ratios (PAPRs) create additional loads. The performance of RF PA can dominate the overall Transmitter (Tx) performance due to its Power Added Efficiency (PAE), which dominates power and heat dissipation. For high data rate communication, broadband, high gain, high output power, and high efficiency are essential features. To transmit modulation schemes like OFDM, PAs must maintain high efficiency levels over both peak power and back off power. However, achieving high PAE requirements in 5G is challenging due to the requirement of 800 MHz for basestations and 200 MHz for handsets. Complex modulation schemes like 64QAM OFDM need a PAPR of 8-9 dB, and EVM should be below 5.5% normalized to the average signal power for BER to be below (10-6). Various techniques, such as Doherty and Outphasing and Load Modulated Balanced Amplifier (LMBA), have been used in the past. Recently, two methods for efficiency improvement using second harmonic design space and a new class IF-1 PA have been proposed. New techniques in LMBA could be investigated for further efficiency improvement of PAs. |
Total Budget (INR): | 50,08,146 |
Organizations involved