Enhancing Transimpedance Amplification with Optimization of Supply Voltage of Negative Impedance Converter

This paper presents a newly regulated cascode CMOS transimpedance amplifier (RGC-CMOS TIA) designed specifically for high-frequency applications. Incorporating negative impedance converters (NIC) into the RGC-CMOS TIA achieves significant performance improvements. The strategic voltage optimization of NICs results in a substantial increase in bandwidth, allowing the amplifier to operate at an impressive 6.7 GHz. With a transimpedance gain of 56.7 dBΩ, which demonstrates substantial amplification capabilities. Simulation results confirm the effectiveness of the proposed configuration in expanding bandwidth, making a significant contribution to high-frequency amplification for optical communication systems.