Please follow rescale instructions below to move the device to the new frequency1. Determine the relative bandwidth as the ratio of the absolute bandwidth to the center frequency. 2. In the table "SAW filters" locate any filter at arbitrary frequency with relative bandwidth needed and appropriate level of insertion loss, shape factor, group delay etc. It will be a SAW Filter - prototype. 3. Create an request, specifying the type of filter prototype (the letter "A" and the first three digits) is required by the new center frequency. Refine the preferred type of packaging.
ExampleFront-End SAW Filter with the bandwidth 85 MHz at 1700 MHz center frequency is needed. 1. The required relative bandwidth dF/F0 = 85/1700 = 0.05 (5%). 2. In the table "SAW filters" sort data by means of arrows in the column heading "Relative bandwidth". 3. Find a low loss filter with a relative bandwidth near 5%, for example, A153-1860M1 (5.11% relative bandwidth). 4. Order the new filter A153-1700M1 in DCC6 package in lot of 1 to xxxxx pieces.