Abstract: A window/seal and a satellite ground station antenna using the window/seal. A window/seal for a circular waveguide includes a right-circular cylindrical window having an axis, an annular rib surrounding and coaxial with the annular recess, and an annular recess between the cylindrical window and the annular rib. An outer diameter of the annular rib is configured to fit closely within an inside diameter of the circular waveguide.

Abstract: A window/seal and a satellite ground station antenna using the window/seal. A window/seal for a circular waveguide includes a right-circular cylindrical window having an axis, an annular recess surrounding and coaxial with the cylindrical window, and an annular rib surrounding and coaxial with the annular recess. An outer diameter of the annular rib is configured to fit closely within an inside diameter of the circular waveguide.

Abstract: A window/seal and a satellite ground station antenna using the window/seal. A window/seal for a circular waveguide includes a right-circular cylindrical window having an axis, an annular recess surrounding and coaxial with the cylindrical window, and an annular rib surrounding and coaxial with the annular recess. An outer diameter of the annular rib is configured to fit closely within an inside diameter of the circular waveguide.

Abstract: A mechanism to connect first and second circular waveguides. A first member includes two or more pins extending radially from a body, the first waveguide coaxial with the body and terminating at a first port at an end face of the body. A second member has a cavity coaxial with the second waveguide and configured to fit over the first member, the second waveguide terminating at a second port within the cavity. Slots disposed around a perimeter of the cavity engage the two or more pins. A cap fits over the second member, the cap including L-shaped slots to engage the two or more pins extending through the slots of the second connecting member. A wave spring between an inside surface of the cap and a shoulder of the second member urges the second port towards the first port when the cap is engaged with the two or more pins.

Abstract: Thermally-sensitive structures and methods for sensing the temperature in a region of a FET during device operation are described. The region may be at or near a region of highest temperature achieved in the FET. Metal resistance thermometry (MRT) can be implemented with gate or source structures to evaluate the temperature of the FET.

Abstract: Thermally-sensitive structures and methods for sensing the temperature in a region of a FET during device operation are described. The region may be at or near a region of highest temperature achieved in the FET. Metal resistance thermometry (MRT) can be implemented with gate or source structures to evaluate the temperature of the FET.

Abstract: Thermally-sensitive structures and methods for sensing the temperature in a region of a FET during device operation are described. The region may be at or near a region of highest temperature achieved in the FET. Metal resistance thermometry (MRT) can be implemented with gate or source structures to evaluate the temperature of the FET.

Abstract: Thermally-sensitive structures and methods for sensing the temperature in a region of a FET during device operation are described. The region may be at or near a region of highest temperature achieved in the FET. Metal resistance thermometry (MRT) can be implemented with gate or source structures to evaluate the temperature of the FET.

Abstract: A mechanism to connect first and second circular waveguides. A first member includes two or more pins extending radially from a body, the first waveguide coaxial with the body and terminating at a first port at an end face of the body. A second member has a cavity coaxial with the second waveguide and configured to fit over the first member, the second waveguide terminating at a second port within the cavity. Slots disposed around a perimeter of the cavity engage the two or more pins. A cap fits over the second member, the cap including L-shaped slots to engage the two or more pins extending through the slots of the second connecting member. A wave spring between an inside surface of the cap and a shoulder of the second member urges the second port towards the first port when the cap is engaged with the two or more pins.

Abstract: Thermally-sensitive structure and methods for sensing the temperature in a region of a bipolar junction transistor (BJT) during device operation are described. The region may be at or near a region of highest temperature attained in the BJT. Metal resistance thermometry (MRT) can be implemented to assess a peak operating temperature of a BJT.

Abstract: Thermally-sensitive structures and methods for sensing the temperature in a region of a FET during device operation are described. The region may be at or near a region of highest temperature achieved in the FET. Metal resistance thermometry (MRT) can be implemented with gate or source structures to evaluate the temperature of the FET.

Abstract: Thermally-sensitive structures and methods for sensing the temperature in a region of a FET during device operation are described. The region may be at or near a region of highest temperature achieved in the FET. Metal resistance thermometry (MRT) can be implemented with gate or source structures to evaluate the temperature of the FET.

Abstract: A charge storage device comprising: a first electrode; a second electrode being opposed to and spaced apart from the first electrode; a porous separator disposed between the electrodes; a sealed package for containing the electrodes, the separator and an electrolyte in which the electrodes are immersed; and a first terminal and a second terminal being electrically connected to the first electrode and the second electrode respectively and both extending from the package to allow external electrical connect to the respective electrodes, wherein the gravimetric FOM of the device is greater than about 2.1 Watts/gram.

Abstract: An electrode for an energy storage device, including a substrate of at least one metal that forms a native oxide layer; and a treated layer formed on the substrate from the native oxide layer, the treated layer having a resistance that is less than the resistance of a native oxide layer. In some embodiments, the treated layer possesses at least one of the following properties: includes one or more dopants, is thinner than the native oxide layer, has a carbon coating that is applied to the treated layer which improved adhesion characteristics, and others. Further, there is an energy storage device having two or more of such electrodes, wherein the device has a low initial ESR and/or a low ESR at various intervals. Moreover, disclosed is a low resistance metal including a substrate of at least one metal that forms a native oxide layer; and a treated layer formed on the substrate from the native oxide layer, the treated layer having a resistance that is less than the resistance of a native oxide layer.

Abstract: A charge storage device comprising: a first electrode, a second electrode being opposed to and spaced apart from the first electrode; a porous separator disposed between the electrodes; a sealed package for containing the electrodes, the separator and an electrolyte in which the electrodes are immersed; and a first terminal and a second terminal being electrically connected to the first electrode and the second electrode respectively and both extending from the package to allow external electrical connection to the respective electrodes, wherein the gravimetric FOM of the device is greater than about 2.1 Watts/gram.

Abstract: A power supply (1) for a pulsed load (2) includes a first energy storage device in the form of a battery (3) which is in parallel with a second energy storage device in the form of a supercapacitor (4). Battery (3) and supercapacitor (4) are respectively modelled as: an ideal battery (7) in series with an internal resistance (8); and an ideal capacitor (9) in series with an equivalent series resistance (ESR) (10). Through use of a supercapacitor (4) having a low ESR with respect to the resistance (8), the power supply (1) facilitates continuity of supply to load (2). That is, during peak demand more of the load current will be supplied by supercapacitor (4) due to the lower ESR. Moreover, during times of lower load current demands the battery recharges the supercapacitor. This reduces the peak current needed to be provided by the battery and thereby improves battery longevity.

Abstract: A charge storage device (1) includes a sealed prismatic housing (2). Two opposed folded rectangular aluminium electrodes (3, 4) are disposed within housing (2) and connected to respective metal terminals (5, 6) for allowing external electrical connection to the electrodes. A porous, electronically insulating separator material, e.g. Solupor™, sheet separator (7) is disposed intermediate electrodes (3, 4) for maintaining those electrodes in a fixed spaced apart configuration. An electrolyte (not shown) is also disposed intermediate the electrodes. Collecting means in the form of a scavenging agent is grafted to separator (7) for sequestering one or more predetermined contaminants from the housing.

Abstract: A charge storage device comprising: a first electrode; a second electrode being opposed to and spaced apart from the first electrode; a porous separator disposed between the electrodes; a sealed package for containing the electrodes, the separator and an electrolyte in which the electrodes are immersed; and a first terminal and a second terminal being electrically connected to the first electrode and the second electrode respectively and both extending from the package to allow external electrical connection to the respective electrodes, wherein the gravimetric FOM of the device is greater than about 2.1 Watts/gram.

Abstract: A power supply (1) for a pulsed load (2) includes a first energy storage device in the form of a battery (3) which is in parallel with a second energy storage device in the form of a supercapacitor (4). Battery (3) and supercapacitor (4) are respectively modelled as: an ideal battery (7) in series with an internal resistance (8); and an ideal capacitor (9) in series with an equivalent series resistance (ESR) (10). Through use of a supercapacitor (4) having a low ESR with respect to the resistance (8), the power supply (1) facilitates continuity of supply to load (2). That is, during peak demand more of the load current will be supplied by supercapacitor (4) due to the lower ESR. Moreover, during times of lower load current demands the battery recharges the supercapacitor. This reduces the peak current needed to be provided by the battery and thereby improves battery longevity.

Abstract: A new variety of sweetpotato, Ipomoea batatas, identified as ‘Mahon Yam’ is disclosed having superior eating quality. ‘Mahon Yam’ is characterized by an orange fleshed root that when cooked is sweet, moist and not stringy or fibrous (i.e. creamy). The plant itself is distinguished by unusual leaves for an eating quality sweetpotato, they are seven (7) lobed.