| 摘要 |
A surface acoustic wave (SAW) filter receives an aggregate circuit, and outputs two or more sub-signals individually having different frequency bands on outputs. The sub-signals are amplified by low noise amplifiers, and the amplified sub-signals can be summed in one implementation. The outputs are connected via a switched passive network, so that portions of the sub-signals on the outputs, which are not in a selected frequency band, are at least partially terminated. |
