Abstract
This paper describes a feedforward amplifier with a new adaptive control method. For the modulated signal with a high peak-to-average ratio, the residual output error level of the feedforward amplifier can be further reduced by adjusting the 1st loop control parameters to have an imperfect signal cancellation since an error amplifier generates less distortion in the case. For verification, a base-band signal simulation and experiments have been performed. A 30W feedforward amplifier for WCDMA base stations at 2.14GHz shows a 4dB improvement of linearization when it is controlled by the proposed method.
| Original language | English |
|---|---|
| Pages (from-to) | 769-772 |
| Number of pages | 4 |
| Journal | IEEE MTT-S International Microwave Symposium Digest |
| Volume | 2 |
| State | Published - 2002 |
| Externally published | Yes |
| Event | IEEE MSS-S International Microwave Symposium Digest - Seattle, WA, United States Duration: 2 Jun 2002 → 7 Jun 2002 |
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