BAND TUNABLE CERAMIC BLOCK FILTER
Original Publication Date: 1988-Oct-01
Included in the Prior Art Database: 2001-Oct-29
In some filter applications a band tunable filter could be smaller than a broadband filter and still meet all the selectivity requirements. As an example consider a mobile Telephone with a 26 MHz bandwidth and 45MHz separation between TX and Rx. Figure 1 shows the present type of filter.