Conference Publication Details
Mandatory Fields
Ralph S.;Farrell R.
European Conference on Circuit Theory and Design 2007, ECCTD 2007
Using high pass sigma-delta modulation for class-S power amplifiers
2008
August
Published
1
()
Optional Fields
707
710
Switching power amplifiers offer the potential for superior efficiencies if used at radio frequencies. However many existing bandpass architectures require a switching frequency four times that of the signal, making implementation difficult. In this paper we propose to use a high-pass sigma-delta modulator to reduce the switching rate to only twice of the signal. We will present a solution to the problem of the reflected image and demonstrate it's viability for use in mobile telephony. © 2007 IEEE.
10.1109/ECCTD.2007.4529694
Grant Details