Results 221 to 230 of about 134,248 (260)

A 3.6GHz Highly Efficient Dual-Driver Doherty Power Amplifier

2024 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR)
This paper presents an advanced Doherty-type power amplifier architecture, which uses two driver amplifiers embedded in the Main and Peaking paths of the Doherty stage.
Ioannis Peppas, Marco Pitton, Mustazar Iqbal, P. Singerl, Bhagath Talluri, Martin Mataln, H. Paulitsch, W. Bösch   +7 more
semanticscholar   +1 more source

Doherty power amplifier with feedforward linearization

2009 Asia Pacific Microwave Conference, 2009
This paper presents a high efficiency feedforward power amplifier with Doherty technique for multi-carrier GSM base-station. The main Doherty power amplifier (DPA) was designed with third-order intermodulation distortion (IMD3) cancellation technique and tunable power division for optimized linearity and efficiency.
Yong-Bo Xiang, Guang-Ming Wang
openaire   +1 more source

32.2 A 24.25-to-29.5GHz Extremely Compact Doherty Power Amplifier with Differential-Breaking Phase Offset Achieving 23.7% PAEavg for 5G Base-Station Transceivers

IEEE International Solid-State Circuits Conference
A beamforming phased-array has become an indispensable configuration in 5 G new-radio (NR) frequency-range-2 (FR2) cellular communications to boost an equivalent isotropic radiated power.
Hansik Oh, Seungwon Park, Jooseok Lee, Seungjae Baek, Joonho Jung, Taewan Kim, Jinhyun Kim, Woojae Lee, Jae-Hong Park, Kihyun Kim, Dong-Hyun Lee, Sangho Lee, Jeong Ho Lee, J. H. Kim, Younghwan Kim, Sangyong Park, B. Suh, Soyoung Oh, Dongsoo Lee, S. Jeon, J. Son, Sung-Gi Yang   +21 more
semanticscholar   +1 more source

A Wideband 100W Doherty Power Amplifier

2019 IEEE 19th Mediterranean Microwave Symposium (MMS), 2019
In this paper, design, fabrication and measurement results of a Doherty power amplifier (DPA) with a fractional bandwidth of wider than 90% is reported. An inverter-less architecture was used to overcome intrinsic bandwidth limitation of conventional DPAs.
Sina Rafati, Sayyed-Hossein Javid-Hosseini, Vahid Nayyri, Mohammad Soleimani   +3 more
openaire   +1 more source

32.9 An Ultra-Compact 28GHz Doherty Power Amplifier with an Asymmetrically-Coupled-Transformer Output Combiner

IEEE International Solid-State Circuits Conference
Mm-wave wireless communication and sensing heavily rely on phased arrays to compensate for high path losses and meet link-budget targets. Recent mm-wave arrays have grown increasingly complex, often with many parallel RF paths integrated on a single ...
E. Liu, Hua Wang
semanticscholar   +1 more source

Doherty Linear Power Amplifiers for Mobile Handset Applications

2007 IEEE Radio and Wireless Symposium, 2006
Two Doherty amplifiers are designed in MMIC form, which are fabricated using a commercial InGaP/GaAs HBT foundry process. The one is classical Doherty type amplifier with the size ratio of main device and auxiliary device of N=l, and the other is an extended Doherty with the size ratio of N=3. The input and output circuits are made using hybrid circuit,
null Bumman Kim, null Joongjin Nam, null Daekyu Yu   +2 more
openaire   +1 more source

An X-Band GaAs MMIC Doherty Power Amplifier

2010 Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits, 2010
In this contribution, the design of an X-Band MMIC Doherty Power Amplifier (DPA) in GaAs technology is presented. The DPA, based on 2250µm of total gate periphery, will be deeply described with the aim to highlight each design choice. The nonlinear simulation results shown a saturated output power and drain efficiency greater than 30dBm and 47 ...
COLANTONIO, PAOLO, GIANNINI, FRANCO, GIOFRE', ROCCO, LIMITI, ERNESTO, PIAZZON, LUCA   +4 more
openaire   +2 more sources

A wide-band 20W LMOS Doherty power amplifier

2010 IEEE MTT-S International Microwave Symposium, 2010
This work discusses the efficiency bandwidth constrains in Doherty amplifiers. An analysis of the bandwidth limitations imposed by the impedance inverter and output capacitance of the active devices is given. Alternative wideband matching and output connection schemes for Doherty amplifiers are evaluated for their efficiency performance both at full ...
J. H. Qureshi, L. Nan, E. Neo, F. V. Rijs, I. Blednov, L. de Vreede   +5 more
openaire   +1 more source

Focusing on Doherty Power Amplifiers for S-Band

2012 19th International Conference on Microwaves, Radar & Wireless Communications, 2012
The aim of this paper is to provide an overview of the actual state-of-art about the Doherty Power Amplifier (DPA) for S-Band application and to present a new realization using GaN devices able to provide 41dBm saturated output power with 60% drain efficiency and 10dB gain at 2.14GHz.
GIOFRE', ROCCO, PIAZZON, LUCA, COLANTONIO, PAOLO, GIANNINI, FRANCO   +3 more
openaire   +1 more source

Compact harmonic control network for Doherty power amplifier

Microwave and Optical Technology Letters, 2008
AbstractIn this contribution, an innovative design solution to realize small size Doherty power amplifier is presented. The idea consists in the realization of a unique output matching network for both carrier and peaking devices without losing the Doherty behavior.
COLANTONIO, PAOLO, GIANNINI, FRANCO, GIOFRE', ROCCO, PIAZZON, LUCA   +3 more
openaire   +3 more sources