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发表于 2015-2-15 20:33:24
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The most important thing is isolation. Suppose you have 2 Tx, Tx1 and Tx2. If you just merged the trace, it will create the impedance mis-match and phase mis-match. Tx1 power can be also fed to Tx2 and Tx2 power can be also fed to Tx1. In this way, it will create intermodulation distortion at both Tx1 and Tx2. So, we normally use splitter or combiner to combine both Tx power together. |
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