| 摘要 |
<p>The invention concerns an electrical balance duplexer comprising an electrical balance load 12. The duplexer includes a power combiner 20-26 for combining a first differential output 16 from a first power amplifier (PA) and a second differential output 18 from a second power amplifier. The power combiner outputs the combined signal to an antenna connection 29 and an electrical balance load connection 30. Common mode isolation is provided between the power amplifiers and a low noise amplifier (LNA) 14 through the use of two differential power amplifiers. The power combiner may comprise multiple linked hybrid transformers 20, 22, 24, 26. An embodiment with four power amplifiers is also disclosed.</p> |
