Profile
Engineering Skills
Adaptive impedance matching network design, LNA design, RF power amplifier de-sign, filter design, and antenna design.
Experience with KeysightADS, AnsysHFSS, and Analog/RF design in Cadence. PCB design using EAGLE/Altium
Data analysis and general-purpose lab scripting using MATLAB and Python
Interface lab equipment with PC using SCPI commands
Interface script with ADS and HFSS for rapid circuit design
Extensive lab equipment experience including vector network analyzers, spectrum analyzers, function generators, digital oscilloscopes, soldering, 3D design (Auto-CAD) and printing, and PCB milling (LPKF machine)
Education
2018 Arizona State University
MSE in Electrical (RF/mmWave) Engineering | Emphasis on RF/Microwave circuit design along with LNA design, Filter design, PIN diode phase shifter design, Wireless Communication and Antenna design
2023 Arizona State University
PhD in Biomedical Engineering (RF circuit design) | Work towards the ad-vancement of low- power, NextGen RF electronics for portable MRI. A general-purpose Standalone Wireless Impedance Matching (SWIM) system. Towards pros-tate imaging with inflatable liquid metal RF coil.
Projects
Standalone Wireless Impedance Matching system for preclinical imaging
In this study, we developed an automatic impedance matching system to tune and match RF coils with RF MEMS switch capacitor array and PIN diode capaci-tor array. This automatic impedance matching system is independent of scan-ner synchronization and facilitates wireless control of the capacitor array via an Android application. We aimed at developing a general-purpose tuning and matching system at 7T that can compensate for impedance mismatch of most of RF coils
Low Noise Amplifier
Designed LNA for a High Speed Multi-Media link operating from 5.65-5.925GHz using Keysight ADS. Low noise E-PHEMT was biased at 3V Vds and 20mA Id with a Vgs set to 0.67V using resistor dividers. Achieved a gain of 13dB ± 0.19dB ripple and a noise figure of 0.55dB max at the center frequency using S-parameter simulations
Doherty Power Amplifier
Designed a high power symmetric DPA in the 2.11-2.17GHz region using Keysight ADS. Achieved P3dB of 57dBm by performing Harmonic balance simulations. Achieved Maximum power output (MXP), and Maximum efficiency (MXE) using load pull analysis and achieved average gain and efficiency of 16.4 dB and 44% respectively with average output power of 49dBm at output.
Dielectric Resonator Oscillator
Designed a DRO at 5.15GHz with an offset restriction of ±500kHz from the cen-ter frequency. A Resonator puck model was used between parallel microstrip lines to couple with the oscillator. S-parameter analysis with OscTest gave a Nyquist plot that confirmed stable oscillations at the center frequency. Achieved an output power of 15dBm and phase noise of -90dBc/Hz at 10kHz offset by performing various analysis such as Harmonic Balance with Os-cPort/OscTest, Transient analysis and Phase Noise analysis.
Symmetric Operational Transconductance Amplifier
Design of 3 OTA’s using 0.25um CMOS technology in Cadence Virtuoso. Achieved input referred noise of less than 10nV/sqHz (thermal noise floor) with a HD3 of more 60dB for each OTA. Designed enhanced output impedance OTA with a common source buffer and achieved gain of 108dB and unity gain bandwidth of 66MHz. Verified layout-versus-schematic (LVS) and Design-Rule-Check (DRC) for the layout generated.
InTERESTS
RF circuit design
RFIC design
Microwave circuit design
Antenna design