High-power 20-100-MHz linear and efficient power-amplifier design

Date

2008-09-01

Author

Sahan, Necip
Inal, Mehmet Erim
Dernir, Simsek
Toker, Canan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

197
views

0
downloads

This paper presents modeling and analysis of the realization of high-power broadband RF power amplifiers (PAs) and power combiners. In the scope of the study, a model is proposed for a transmission line with a ferrite core, which is the basic building block for the transmission line transformers (TLTs) used in broadband high-power amplifiers and power combiner/divider networks as a building block. Simulated performances of the designed networks using the proposed model possess high conformity with the empirical performance of the corresponding realized networks. Therefore, broadband TLT networks with low insertion loss, high power-handling capability, and low return loss are realized. RF power combiner/divider networks with wide frequency bandwidth and high isolation are also implemented. By using class-B biased push-pull network topology, a linear and wideband RF PA is realized with high drain efficiency at high output power levels. In order to broaden the operating frequency range of the indicated amplifier, a novel technique for TIT utilization that matches the output impedance of the RF power transistor in wideband is proposed and realized. Measurement results satisfy the design specifications.

Subject Keywords

Transmission line transformers (TLTs), Power amplifiers (PAs), Magnetic materials, Power combiners

URI

https://hdl.handle.net/11511/32072

Journal

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES

DOI

https://doi.org/10.1109/tmtt.2008.2002238

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

High Power K-band GaN on SiC CPW Monolithic Power Amplifier Cengiz, Omer; ŞEN, ÖZLEM; ÖZBAY, Ekmel (2014-10-07) This paper presents a high power amplifier at K-band (20.2 - 21.2 GHz). The AlGaN/GaN CPW MMIC amplifier is realized with 0.25 mu m HEMT process on 2-inch semi-insulating SiC substrate. The amplifier has a small signal gain over 20 dB for Vds=15V and measured output power of over 31 dBm at 20.2 Ghz. PAE of the amplifier is around 22% for desired frequency band. Initial radiation hardness tests indicate a suitable stability of the technology in space.
Highly Integrated 3 V Supply Electronics for Electromagnetic Energy Harvesters With Minimum 0.4 V-peak Input Ulusan, Hasan; Zorlu, Ozge; Muhtaroglu, Ali; Külah, Haluk (2017-07-01) This paper presents a self-powered interface enabling battery-like operation with a regulated 3 V output from ac signals as low as 0.4 V-peak, generated by electromagnetic energy harvesters under low frequency vibrations. As the first stage of the 180 nm standard CMOS circuit, harvested signal is rectified through an ac/dc doubler with active diodes powered internally by a passive ac/dc quadrupler. The voltage is boosted in the second stage through a low voltage charge pump stimulated by an on-chip ring osc...
Carrier Phase Shift Method of SPWM for Concurrent Wired and Wireless Power Transfer Systems Ayaz, Enes; Altun, Ogün; Keysan, Ozan (2022-01-01) This paper presents an approach for concurrent power transfer to wired and wireless systems using just a single inverter. The approach utilizes a novel carrier phase-shift (CPS) method that independently controls the inverter output voltages at the fundamental and switching frequencies. This proposed method can be a cost-effective solution to wireless power transfer (WPT) systems used in contactless slip rings (CSR), which transfer power to auxiliary loads such as sensors, radars, and IoT devices. There are...
Linearization of RF power amplifiers with memoryless baseband predistortion method Kolcuoğlu, Turusan; Demir, Şimşek; Department of Electrical and Electronics Engineering (2011) In modern wireless communication systems, advanced modulation techniques are used to support more users by handling high data rates and to increase the utilization efficiency of the limited RF spectrum. These techniques are sensitive to the nonlinear distortions due to their high peak to average power ratios. Main source of nonlinear distortion in transmitter topologies are power amplifiers that determine the overall efficiency and linearity of the transmitter. To increase linearity without sacrificing effi...
Advanced Active Power Filter to Improve Power Quality Gurguiatu, Gelu; Balanuta, Ciprian; Rosu, Emil; Munteanu, Toader; Dumitrescu, Mariana; Raducan, Elena (2011-09-10) This paper presents a three-phase Active Power Filter (APF) to improve grid power quality. Starting from indirect control strategy which was used only for three legs - three wires it is proposed in this paper to be used a bridge with three legs - four wire. The new control strategy it was named extended indirect control strategy. The extension consists in passing from the control of a three wire active power filter to the control of a four wire active power filter. The proposed active power filter can compe...

Citation Formats

N. Sahan, M. E. Inal, S. Dernir, and C. Toker, “High-power 20-100-MHz linear and efficient power-amplifier design,” IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, pp. 2032–2039, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32072.