首页>
外国专利>
NARROW-BAND CRYSTAL FILTER IN BRIDGE NETWORK
NARROW-BAND CRYSTAL FILTER IN BRIDGE NETWORK
展开▼
机译:桥接网络中的窄带晶体滤波器
展开▼
页面导航
摘要
著录项
相似文献
摘要
The invention concerns a narrow- band bridge-connected crystal filter having a tunable input transformer the secondary of which is centre-tapped. One end of the secondary is connected to the branch of the bridge containing the crystal connected in series with a capacitor. The bandwidth of the transformer is at least 20 times the design bandwidth of the crystal filter. The series-connected crystal and capacitor are shunted by a fixed and a variable capacitor connected in parallel with each other. IMAGE
展开▼