Development of an HTS Transmit Filter Package System thatProvides Uniform Cooling

Conductus proposes to develop an HTS transmit filter package system that provides uniform cooling to the HTS elements of the filter. An isothermal or as near as possible temperature distribution in the filter elements is highly desirable for optimum filter performance. Both filter design and package system design ultimately impact filter performance; this program emphasizes the contributions of package design. The main goal of the proposed effort is to design an HTS transmit filter package that is mechanically stable and provides an isothermal environment or as close to as needed to realize good HTS transmit filter performance. Key items that will be addressed are resonator design, package system thermal performance, and package system structural details such as tuning stability, wafer bonding, and cryocooler interface.