Low-power LDO Design of High-efficiency Class AB OTA Based on Adaptive Biasing

Design of High Efficiency Broadband Adjusted Class AB Power Amplifier

Low power high-gain class-AB OTA with dynamic output current scaling

A high-performance operational transconductance amplifier (OTA) is proposed. In order to increase DC gain, gain bandwidth, and the slew rate under low standby quiescent current, the proposed OTA has the dynamic output current scaling and class AB operation. Under the condition of 250 A quiescent current and a 30 pF load capacitance with a step voltage from 1.2 to 1.5V at a rise time of 1 nsec i...

High Efficiency Class-F Power Amplifier Design

Due to the high increase in and demand for a wide assortment of applications that require low-cost, high-efficiency, and compact systems, RF power amplifiers are considered the most critical design blocks and power consuming components in wireless communication, TV transmission, radar, and RF heating. Therefore, much research has been carried out in order to improve the performance of power amp...

An Adaptive Biasing Technique to Convert a Pseudo-Class AB Amplifier to Class AB

An essential modification to a conventional four-stage pseudo-class AB amplifier results in a true class AB amplifier. As opposed to the conventional pseudoclass AB scheme, which uses a current mirror in the third stage, our work uses an adaptive biasing circuit in the third stage in order to drastically reduce quiescent current. The pseudo-class AB and new class AB amplifiers are designed in a...

application of upfc based on svpwm for power quality improvement

در سالهای اخیر،اختلالات کیفیت توان مهمترین موضوع می باشد که محققان زیادی را برای پیدا کردن راه حلی برای حل آن علاقه مند ساخته است.امروزه کیفیت توان در سیستم قدرت برای مراکز صنعتی،تجاری وکاربردهای بیمارستانی مسئله مهمی می باشد.مشکل ولتاژمثل شرایط افت ولتاژواضافه جریان ناشی از اتصال کوتاه مدار یا وقوع خطا در سیستم بیشتر مورد توجه می باشد. برای مطالعه افت ولتاژ واضافه جریان،محققان زیادی کار کرده ...