Developement of 12.76MHz Discrete Crystal Filter

12. 76MHz discrete crystal filter adopts AT cut quartz resonator and differential bridge circuit design. The bandwith of 3dB passband is up to 60kHz at the operting temperature range of -20°c ~ 60°C. The filter features advanced circuit design, reasonable component application, voltage standing wave ratio less than 2.0. The components are mounted and sealed with tin, and the whole structure is shielded and isolated. The successful development of this product provides a frequency selection device for electronic systems such as tactical mission and radar systems which require extremely high signal reception and transmission under severe conditions. The electrical performance test data and result analysis of the 12. 76MHz discrete crystal filter are given.