Digitally controlled power amplifier for underwater electro acoustic transducers

2016 ◽  
Author(s):  
V. N. Panchalai ◽  
Bineesh P Chacko ◽  
N. Sivakumar
Keyword(s):  
Power Amplifier ◽  
Acoustic Transducers ◽  
Digitally Controlled

Efficiency enhanced CMOS digitally controlled dynamic bias switching power amplifier for LTE

2015 ◽  
Vol 57 (10) ◽  
pp. 2315-2321 ◽  
Author(s):  
Hyungchul Kim ◽  
Jongsuk Bae ◽  
Junghyun Ham ◽  
Jehyeon Gu ◽  
Mincheol Seo ◽  
...  
Keyword(s):  
Power Amplifier ◽  
Switching Power ◽  
Digitally Controlled ◽  
Dynamic Bias

A Digital Linear-Switching Hybrid Power Amplifier for Envelope Tracking Hybrid Supply Modulators

2017 ◽  
Vol 26 (10) ◽  
pp. 1750162
Author(s):  
Atefeh Salimi ◽  
Rasoul Dehghani ◽  
Abdolreza Nabavi
Keyword(s):  
Power Consumption ◽  
Power Amplifier ◽  
Cmos Technology ◽  
Clock Frequency ◽  
Envelope Tracking ◽  
Power Efficient ◽  
Class Ab ◽  
Digital To Analog Converters ◽  
Digitally Controlled ◽  
Digital Block

A novel envelope modulator for envelope tracking RF power amplifier (PA) is presented in this paper. The proposed modulator consists of a parallel combination of analog class AB and digitally controlled hybrid PAs. The analog and digital class AB PAs are effective in both reducing the clock frequency and also static power dissipation, thus improving the efficiency of the modulator. On the other hand, lower clock frequencies result in simpler and more power-efficient digital to analog converters required in the architecture. The modulator digital block is evaluated with a 45[Formula: see text]nm CMOS technology. The overall power consumption of the digital block is around 76[Formula: see text]mW at 800[Formula: see text]MHz clock frequency. As an application, the designed digital block is incorporated in a complete envelope modulator architecture. The overall efficiency of the modulator, including the digital block power consumption, is around 80.7% at an average 32[Formula: see text]dBm output power for a 5[Formula: see text]MHz input signal.

Envelope Tracking of an RF High Power Amplifier With an 8-Level Digitally Controlled GaN-on-Si Supply Modulator

2015 ◽  
Vol 63 (8) ◽  
pp. 2589-2602 ◽  
Author(s):  
Corrado Florian ◽  
Tommaso Cappello ◽  
Rudi Paolo Paganelli ◽  
Daniel Niessen ◽  
Fabio Filicori
Keyword(s):  
Power Amplifier ◽  
High Power ◽  
Envelope Tracking ◽  
High Power Amplifier ◽  
Digitally Controlled ◽  
Gan On Si ◽  
Si Supply

A digitally controlled DC/DC converter for an RF power amplifier

2006 ◽  
Vol 21 (1) ◽  
pp. 164-172 ◽  
Author(s):  
V. Yousefzadeh ◽  
Narisi Wang ◽  
Z. Popovic ◽  
D. Maksimovic
Keyword(s):  
Power Amplifier ◽  
Rf Power ◽  
Rf Power Amplifier ◽  
Digitally Controlled

Digitally-Controlled Polar Transmitter Using a Watt-Class Current-Mode Class-D CMOS Power Amplifier and Guanella Reverse Balun for Handset Applications

2012 ◽  
Vol 47 (5) ◽  
pp. 1104-1112 ◽  
Author(s):  
Toshifumi Nakatani ◽  
Jeremy Rode ◽  
Donald F. Kimball ◽  
Lawrence E. Larson ◽  
Peter M. Asbeck
Keyword(s):  
Power Amplifier ◽  
Current Mode ◽  
Class D ◽  
Digitally Controlled ◽  
Polar Transmitter

A 1–3-GHz Digitally Controlled Dual-RF Input Power-Amplifier Design Based on a Doherty-Outphasing Continuum Analysis

2013 ◽  
Vol 61 (10) ◽  
pp. 3743-3752 ◽  
Author(s):  
Christer M. Andersson ◽  
David Gustafsson ◽  
Jessica Chani Cahuana ◽  
Richard Hellberg ◽  
Christian Fager
Keyword(s):  
Power Amplifier ◽  
Input Power ◽  
Continuum Analysis ◽  
Digitally Controlled ◽  
Amplifier Design
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