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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Taromaru, M. Ando, N. Kodera, T. Yano, K. |
| Copyright Year | 2007 |
| Description | Author affiliation: Adv. Telecommun. Res. Inst. Int., Kyoto (Taromaru, M.; Ando, N.; Kodera, T.; Yano, K.) |
| Abstract | High efficiency transmitter architecture based on Kahn envelope elimination and restoration using PWM envelope modulation schemes is studied. At the final stage, it modulates a constant envelope radio frequency signal by on-off keying or "burst width modulation" directly with the PWM or delta-sigma modulated envelope signal without a lowpass filter. This paper shows that it is suitable to use a triangle-wave comparison PWM which has coherent spectrum peaks of spurious due to switching. It is derived from theoretical analysis that the minimum switching/sampling rate is required as five times high as the baseband bandwidth that is much less than that for the delta-sigma modulation. Simulation results show good modulation quality with the EVM less than 1 percent for raised cosine roll-off filtered 64 QAM. |
| Starting Page | 1 |
| Ending Page | 5 |
| File Size | 785145 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781424411436 |
| DOI | 10.1109/PIMRC.2007.4394620 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-09-03 |
| Publisher Place | Greece |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Pulse width modulation Delta modulation Radio transmitters RF signals Signal restoration Radio frequency Filters Sampling methods Baseband Bandwidth |
| Content Type | Text |
| Resource Type | Article |
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