Afzal has 3 years of experience in RF Hardware/Software, his expertise include configuration of RFFE/Transceiver(PA,LNA, Mixers, Oscillator , RF switches/Duplexer/Circulator, Filters, Antenna switch module and ADC/DAC), RFC, RF Drivers for IoT, MODEMS,schematic diagram analysis/ FEM Components datasheet.
RF Firmware development for 5G/4G/IoT/WIFI/Bluetooth chipsets.
Phy layer understanding of IEEE 802.11.
RF calibration(Automatic power calibration, Automatic Gain calibration, Automatic Frequency calibration) of chipset for different bands(low, mid, high), RF parameters(Tx power, ACLR/ACPR, SEM, EVM, spectrum flatness, RSSI, Rx sensitivity, SNR, BER, Noise Figure) validation according to 3GPP specifications, Conformance Test for RF test cases.
Temperature Compensation of system, Thermal mitigation, Corner Temperature(-40C to 85C ) validation of system and components, RFOffline generation, Board Bringup, Low powered device, Automotive.
Chipsets/Board :- QCX212/216/217,QSIP-217, Quectel EG915/916 NA-EU-GL, Eigenncomm 618/718, ESP32-WROOM.
Instrument Hands on:- CMW500/100, Anritsu MT8820/MT8821C, Spectrum Analyser, Signal Generator, Oscilloscope, Power Supply, Digital/Analog Meter.
Software Tools :- QXDM, QSPR, QRCT, QPM, Qmine, SSCOM(AT command tool), EMAT, EPAT, FLASHTOOL, RF Test Tool, Salesforce Tickets, VScode, ESP-IDF, Beyond compare,JIRA, Perforce.
Simulation Tools :- ADS,HFSS, CST, AWR, Antenna Toolbox, KiCAD.
He has good knowledge in RFIC, RF & Microwave circuits and its fundamentals,S-Parameters, Smith chart, Antenna Design, MPA,Analog & Digital communication, Electromagnetic waves, Link Budget analysis, Analog/Digital Circuits, Embedded systems, Average power tracking and Envelope tracking, Schematic design, PCB layout Analysis, Physical layer, OFDM, QPSK, FSK, QAM and call flow of 4G/5G.
Programming Language:- Python, C, C++, MATLAB.