The Doherty Power Amplifier: Review of Recent Solutions and Trends
نویسندگان
چکیده
منابع مشابه
Modified Doherty Power Amplifier for Wider Band
Wireless communication system are developing rapidly, due to which new standards like WIMAX and 4G Long Term Evaluating(LTE) with a purpose of achieving high data rate result in high end applications such as high speed internet, video conferences and broadband width. These applications require mobile base stations at the transmitter as well as at receiver (T/R) to support features like multiple...
متن کاملHigh-Power Inverted Doherty Power Amplifier for Broadband Application
Abstract This paper presents a high-power inverted Doherty power amplifier for broader operational bandwidth. After analyzing two operation modes according to the load modulation of the Doherty power amplifier, the inverted Doherty structure was selected. In the design, the load impedances for optimum broadband characteristics at both the back-off and peak power levels. The Doherty power amplif...
متن کاملA Symmetrical Optimized Doherty Power Amplifier for LTE Band41
A symmetric Power Amplifier with an optimized impedance quarter wave transmission line is presented using a thermally enhanced high Power LDMOS FET i.e. a 140W Infineon PTFC261402 device. This implementation is realized in the operating frequency of LTE Band41 (2.496GHz-2.69GHz) applicable for LTE base stations. This design achieves a high efficiency that persists for an output power back off r...
متن کاملTowards generalized Doherty power amplifier design for multiband operation
This paper presents a new variant of broadband Doherty power amplifier that employs a novel output combiner. A new parameter αα is introduced to permit a generalized analysis of the recently reported Parallel Doherty power amplifier (PDPA), and hence offer design flexibility. The circuit prototype of the new DPA fabricated using GaN devices exhibits maximum drain efficiency of 85% at 43-dBm pea...
متن کاملThe Doherty Power Ampliier
The Doherty Power Amplifier (DPA) was invented in the far 1936 by W. H. Doherty, at the Bell Telephone Laboratories of Whippany, New Jersey (Doherty, 1936). It was the results of research activities devoted to find a solution to increase the efficiency of the first broadcasting transmitters, based on vacuum tubes. The latter, as it happens in current transistors, deliver maximum efficiency when...
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ژورنال
عنوان ژورنال: IEEE Transactions on Microwave Theory and Techniques
سال: 2015
ISSN: 0018-9480,1557-9670
DOI: 10.1109/tmtt.2014.2387061