摘要
A new balanced amplifier (BA) using metamaterial- based quadrature power splitters (QPSs) is presented in this letter. Instead of using conventional 90° couplers, the developed BA is implemented by two parallel amplifiers with broadband metamaterial-based QPSs at input and output ends. Since the QPSs can provide a broadband quadrature phase difference between two outputs, the input/output reflections from two amplifiers can be effectively cancelled over a wide bandwidth. The developed BA demonstrates the input/output return loss of better than 10 dB from 1.2 to 3.5 GHz with 97.9% relative bandwidth.
| 原文 | English |
|---|---|
| 文章編號 | 4469939 |
| 頁（從 - 到） | 269-271 |
| 頁數 | 3 |
| 期刊 | IEEE Microwave and Wireless Components Letters |
| 卷 | 18 |
| 發行號 | 4 |
| DOIs | |
| 出版狀態 | Published - 4月 2008 |