Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2000.11a
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- Pages.337-340
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- 2000
The Study on the Linearizer Using Feedforward Method
Feedforward 방식을 이용한 선형화기에 관한 연구
Abstract
In this paper, I compared some characteristics between HPA and LPA using Feedforward method. Feedforward method is known for best IMD correction. HPA generated 46.5㏈c at 45.5㏈m output power. But, using feedforward linearing method, I could improve IMD to 67.17㏈c at the same output power. IMD could be improved 20.67㏈ at 45.5㏈m output power. I measured average power, IMD, total current, and efficiency of two amplifier at many different power levels. I could get about 70d3c IMD using feedforward method.
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