In addition, the standard frequency difference is 5.7mhz. The frequency range of frequency difference is 3.5mhz-20mhz (non-standard), and the frequency difference within this range can be produced. Customers are required to provide frequency point customization. At the same time, the actual parameters of the duplexer will change with the frequency difference of the duplexer.
Note:
1. when the frequency difference becomes smaller, the insertion loss will become larger and the isolation will become smaller. When the frequency difference becomes larger, the insertion loss will become smaller and the isolation will become larger (the better the performance)
2. the customer customized the frequency, and after receiving the goods, (key, many customer complaints are caused by this reason)
If the customer needs to debug himself, the frequency difference of the duplexer cannot be changed (this is the key), and the frequency can only be shifted by about ± 3~5mhz