High-Efficiency Class-iF<sup>−1</sup> Power Amplifier With Enhanced Linearity
نویسندگان
چکیده
This article presents a new class of power amplifier (PA), designated as Class-iF $-$ 1 , that utilizes input harmonics to achieve high efficiency with enhanced linearity performance beyond the conventional Class-F PA. The amplitude-to-amplitude modulation (AM/AM) profile PA is mathematically modeled function drive level, such occurrence inflection points can be investigated. Theoretical derivation shows appropriate utilization nonlinearity poses solution rectify double characteristics PA, which, consequently, realized by proper manipulation second harmonic source impedance ( $Z_\text{2S}$ ). theoretical findings were validated load—pull results at 2.3 GHz 2-mm gallium nitride (GaN) device, presenting linearizable output and for broad design space over open-circuit region. As proof concept, was designed fabricated, obtaining 40.1–40.8 dBm 71.2%–77.3% drain (DE) 3-dB gain compression level operating 2.0–2.6-GHz frequency range. When tested 20-MHz 8.5-dB peak-to-average-power-ratio (PAPR) long-term evolution (LTE) signal, around 32.01-dBm average attained an DE 34.59% 56.05 dBc adjacent channel ratios (ACPRs) after digital predistortion (DPD) correction.
منابع مشابه
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...
متن کاملA novel low-power low-voltage Class D amplifier with feedback for improving THD, power efficiency and gain linearity
Class D amplifiers (amps) are conventionally designed as feedforward circuits primarily due to the difficulty of feeding back the digital pulse width modulated output. We analytically investigate the design of Class D amps with feedback and propose a feedback circuit design. We show that the performance of current-art low-power (mWs) low-voltage (1.11.4V) Class D amps embodying our feedback des...
متن کاملInvestigation of Broadband Power Amplifier with High Power-combining Efficiency
A four-device broadband solid-state power amplifier, which is based on radial waveguide power-dividing/combining circuit, has been investigated in this work. The fabricated power amplifier combining four monolithic microwave integrated circuit power amplifiers shows a 12–16.6 dB small-signal gain over a broadband from 6 to 14 GHz. The measured maximum output power at 1 dB compression is 25.6 dB...
متن کاملAn 83dB Low-Power High-Linearity Variable Gain Amplifier
A newly proposed variable gain amplifier (VGA) topology is presented. The three-stage VGA offers a wide control gain range, which is independent on process variation, and is characterized by low-power, high linearity, wide range of control signal, and small chip size characteristics. The VGA is fabricated in 0.18μm CMOS technology and measurements show a gain variation of 83dB (-36~47dB) with a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Microwave Theory and Techniques
سال: 2023
ISSN: ['1557-9670', '0018-9480']
DOI: https://doi.org/10.1109/tmtt.2022.3224132