DocumentCode
1915347
Title
Design of a Linearly Assisted Switcher for a Supply Modulated RF Transmitter
Author
Rahkonen, Timo ; Jokitalo, Olli-Pekka
Author_Institution
Dept. of Electr. Eng., Oulu Univ.
fYear
2006
fDate
Nov. 2006
Firstpage
1
Lastpage
4
Abstract
A broadband modulated power supply for envelope tracking or polar RF transmitters has been built. To study the design constraints, an efficient state-based simulation tool was developed. Based on behavioral simulations, a prototype supply was built. It can deliver up to 1W (6V, 150 mA) to a resistive load of 30 ohms with spectral purity of ca. -45 dBc. The power efficiency using a QAM-signal is 49%
Keywords
power amplifiers; power supply circuits; radio transmitters; 150 mA; 30 ohm; 6 V; QAM-signal; broadband modulated power supply; envelope tracking; linearly assisted switcher; polar RF transmitters; state-based simulation tool; supply modulated RF transmitter; Amplitude modulation; Broadband amplifiers; Circuit simulation; Impedance; Power amplifiers; Power supplies; Radio frequency; Radiofrequency amplifiers; Switches; Transmitters;
fLanguage
English
Publisher
ieee
Conference_Titel
Norchip Conference, 2006. 24th
Conference_Location
Linkoping
Print_ISBN
1-4244-0772-9
Type
conf
DOI
10.1109/NORCHP.2006.329231
Filename
4126934
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