公开(公告)号：EP0883203A2

公开(公告)日：1998-12-09

申请号：EP98304360.5

申请日：1998-06-02

Applicant: COM DEV LTD.

Inventor： Lundquist, Steven Barton ,  Zybura, Andre J.

IPC: H01P1/208 ,  H01P1/30 ,  H01P7/06

CPC classification number: H01P1/208 ,  H01P1/30 ,  H01P7/06

Abstract: A temperature compensated filter has a compensating screw (18) mounted in a support (40) in the wall (22) of a cavity. The support is made from a material having a high coefficient of thermal expansion compared to the material of the cavity and the material of the compensating screw. As temperature changes, the support moves the compensating screw either further into the cavity or further out of the cavity to compensate for the change in resonant frequency of the cavity that would otherwise occur. The compensating screw can be used with single, dual or triple mode cavities. The compensating screw can be made of metallic material or it can be made of non-metallic material with a metallic outer surface. The compensating screw is locked in the support before the support is inserted into the wall of the cavity. The support is then locked in the wall of the cavity and the screw automatically changes position within the cavity as temperature changes. An RF barrier (50) can be used to prevent RF energy from the cavity from entering the area of the support.

公开(公告)号：EP0883203A3

公开(公告)日：1999-10-27

申请号：EP98304360.5

申请日：1998-06-02

Applicant: COM DEV LTD.

Inventor： Lundquist, Steven Barton ,  Zybura, Andre J.

IPC: H01P1/208 ,  H01P1/30 ,  H01P7/06

CPC classification number: H01P1/208 ,  H01P1/30 ,  H01P7/06

Abstract: A temperature compensated filter has a compensating screw (18) mounted in a support (40) in the wall (22) of a cavity. The support is made from a material having a high coefficient of thermal expansion compared to the material of the cavity and the material of the compensating screw. As temperature changes, the support moves the compensating screw either further into the cavity or further out of the cavity to compensate for the change in resonant frequency of the cavity that would otherwise occur. The compensating screw can be used with single, dual or triple mode cavities. The compensating screw can be made of metallic material or it can be made of non-metallic material with a metallic outer surface. The compensating screw is locked in the support before the support is inserted into the wall of the cavity. The support is then locked in the wall of the cavity and the screw automatically changes position within the cavity as temperature changes. An RF barrier (50) can be used to prevent RF energy from the cavity from entering the area of the support.

Abstract translation: 温度补偿过滤器具有安装在空腔的壁（22）中的支撑件（40）中的补偿螺钉（18）。 与空腔材料和补偿螺钉的材料相比，支撑体由具有高热膨胀系数的材料制成。 随着温度的变化，支撑件将补偿螺丝进一步移动到空腔中或者进一步移出空腔，以补偿否则会发生的空腔的谐振频率的变化。 补偿螺丝可用于单模，双模或三模腔。 补偿螺钉可以由金属材料制成，或者可以由具有金属外表面的非金属材料制成。 在将支撑件插入空腔的壁之前，补偿螺钉被锁定在支撑件中。 然后将支撑件锁定在空腔的壁上，随着温度的变化，螺钉自动改变腔内的位置。 可以使用RF屏障（50）来防止来自空腔的RF能量进入支撑体的区域。