Yang Chang

Title: Innovations of Yang Chang

Introduction

Yang Chang is a notable inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of electronics, particularly in amplifier circuits and inductor devices. With a total of 3 patents to his name, his work reflects a commitment to advancing technology.

Latest Patents

One of Yang Chang's latest patents is a variable gain amplifier circuit and method having a linearity compensation mechanism. This invention discloses a variable gain amplifier circuit that includes a lower amplification transistor controlled by an AC input signal. The upper amplification transistors generate an AC output signal at an amplification output terminal. An amplification control circuit manages the turn-on and turn-off of the upper amplification transistor based on an amplification control voltage. Additionally, an inductor is electrically coupled between a power supply terminal and the amplification output terminal. The gain adjustment circuit features adjustment control circuits that regulate the turn-on and turn-off of each adjustment transistor according to an adjustment control voltage. A first voltage adjustment circuit is also included to modify the impedance of each adjustment transistor, further refining the AC cross voltage relation between the lower and upper amplification transistors.

Another significant patent involves an inductor device designed to resist external interference and adjust the inductance value and quality factor of the inductor. This device comprises a first inductor, a second inductor, and at least one switch circuit. The second inductor is arranged to enclose the first inductor, utilizing a topmost layer of metal to shield the first inductor from external interference. The switch circuit is coupled to the second inductor and is designed to receive at least one control voltage, which adjusts the conduction degree of the switch circuit.

Career Highlights

Yang Chang is currently employed at Realtek Semiconductor Inc., a leading company in the semiconductor industry. His work at Realtek has allowed him to apply his innovative ideas and contribute to the development of advanced electronic components.

Collaborations

Yang has collaborated with notable coworkers, including Chia-jun Chang and Chia-Jun Chang, enhancing the collaborative spirit within his team.

Conclusion

Yang Chang's contributions to the field of electronics through his patents and work at Realtek Semiconductor Inc. highlight his role as an influential inventor. His innovative designs continue to impact the industry positively.