Li-Feng Chen

Title: Innovations of Li-Feng Chen

Introduction

Li-Feng Chen is a prominent inventor based in Taipei, Taiwan. He has made significant contributions to the field of radio frequency technology, holding a total of 3 patents. His work focuses on enhancing the performance and efficiency of RF receivers.

Latest Patents

One of his latest patents is titled "RF receiver and method for simultaneously compensating carrier frequency offset and optimizing bandwidth by using preamble of a received RF signal." This invention involves a sophisticated RF receiver that includes an antenna, a low-noise amplifier, a sigma-delta frequency synthesizer/voltage-controlled oscillator (VCO), an in-phase and quadrature (I/Q) mixer, a channel filter, and a digital baseband circuit. The digital baseband circuit features a demodulator, a preamble detection and carrier frequency offset (CFO) estimation circuit, and a CFO to sigma-delta modulation (SDM) input mapper. This innovative design allows the RF receiver to simultaneously compensate for CFO and optimize the bandwidth of the channel filter based on the detection of the preamble field of the digital demodulated signal.

Another notable patent is "Signal receiver for radio signal strength indication estimation with sub-sampling analog-to-digital converter for radio frequency signal with constant envelope modulation." This invention includes a multiplexer, a sub-sample analog-to-digital converter (ADC), and a received signal strength indicator (RSSI) estimator. The multiplexer selects one of the input signals from each stage of cascade amplifiers or the last stage output signal as a selected signal. The sub-sample ADC performs a sub-sampling operation using the selected signal to generate sampled data, while the RSSI estimator calculates an RSSI value corresponding to the selected signal based on the sampled data.

Career Highlights

Li-Feng Chen is currently employed at Uniband Electronic Corp., where he continues to innovate in the field of RF technology. His work has significantly impacted the development of advanced communication systems.

Collaborations

Li-Feng has collaborated with notable colleagues, including Yiping Fan and Sheng-Wei Chiang, who have contributed to his research and development efforts.

Conclusion

Li-Feng Chen's contributions to the field of radio frequency technology through his innovative patents demonstrate his expertise and commitment to advancing communication systems. His work continues to influence the industry and inspire