Abstract: Alloys of GeSbSeTe (GSST) can be used to make actively tunable infrared transmission filters that are small, fast, and solid-state. These filters can be used for hyperspectral imaging, 3D LIDAR, portable bio/chem sensing systems, thermal emission control, and tunable filters. GSST is a low-loss phase-change material that can switch from a low-index (n=3), amorphous state to a high-index (n=4.5), hexagonal state with low loss (k<0.3) over a wavelength range of 2-10 microns or more. The GSST thickness can be selected to provide pure phase modulation, pure amplitude modulation, or coupled phase and amplitude modulation. GSST can be switched thermally in an oven, optically with visible light, or electrically via Joule heating at speeds from kilohertz to Gigahertz. It operates with reversible and polarization independent transmission switching over a wide incident angle (e.g., 0-60 degrees).

Abstract: Implementing a firmware watchdog timer. A system presents a data structure over a bus which exposes, to software executing at a central processing unit (CPU), a hardware resource that is associated with a watchdog timer, attribute(s) of the watchdog timer, and (iii) commands available to the software executing at the CPU for managing the watchdog timer via one or more native CPU instructions that target the hardware resource. The system listens on the bus for a data value written to the hardware resource (i.e., by a native CPU operation issued by the software executing at the CPU), and identifies a particular command for managing the watchdog timer based on the data value written. Based on identifying the particular command, the system performs at least one of: initializing the watchdog timer, starting the watchdog timer, resetting the watchdog timer, or stopping the watchdog timer.

Abstract: A multipaction-proof waveguide filter includes a main cavity and a number of corrugations extending from the main cavity. The main cavity includes corrugation interconnect regions between the plurality of corrugations. The corrugation interconnect regions include sloped surfaces, and the corrugations include flared nonparallel sidewalk. Due to the introduced sloped surfaces and flares, an increased Q is achieved, improved roll off is observed and multipaction risks are mitigated.

Abstract: A septumless polarizer is an OMT polarizer which is formed without a traditional thin septum which bridges the gap from the first assembly half to the second assembly half when the polarizer is split in the zero-current region of the rectangular waveguides (RHCP and LHCP ports). The septumless polarizer utilizes a dual-axis-stepped feature, which is included in one half of the polarizer only, creates the illusion of a traditional thin septum and actually improves performance. A close-proximity fastener scheme is enabled along with a fully encompassing pressure lip and contact pressure risks are mitigated.

Abstract: A multiband waveguide feed network includes multiple transmit (TX) magic tees, multiple receive (RX)-reject waveguide filters configured to reject RX frequencies, and multiple branch-line couplers configured to couple the plurality of RX-reject waveguide filters to the plurality of TX magic tees. The multiband waveguide feed network includes a quadrature junction coupler configured to couple the plurality of RX-reject waveguide filters to an antenna port. The multiband waveguide feed network is configured to be fabricated in four pieces with three split planes, and the multiband waveguide feed network is circularly polarized.

Abstract: A multipaction-proof waveguide filter includes a main cavity and a number of corrugations extending from the main cavity. The main cavity includes corrugation interconnect regions between the plurality of corrugations. The corrugation interconnect regions include sloped surfaces, and the corrugations include flared nonparallel sidewalls. Due to the introduced sloped surfaces and flares, an increased Q is achieved, improved roll off is observed and multipaction risks are mitigated.

Abstract: A vehicle arm adapter that includes a base member, a platform assembly coupled to the base member, and an adjustable frame retaining assembly coupled with the platform assembly. The base member can selectively couple with a lifting arm of a vehicle lift. The platform assembly includes a vehicle engagement surface. The platform assembly can engage and lift a vehicle in coordination with the vehicle lift. The adjustable frame retaining assembly includes a first retractable assembly and a second retractable assembly that are both capable of actuating between an extend configuration and a retracted configuration. The first and second frame retaining assemblies can cooperate to contain a first subset of vehicle frames in the extended configuration. The first and second frame retaining assemblies are prevented from retaining a second subset of vehicle frames in the retracted configuration.

Abstract: A linear multiband waveguide feed network device, which includes a first section, a second section, a third section and an inverse-ridge receive (Rx)-reject filter. The second section is coupled to the first section via a first split-plane. The third section is coupled to the second section via a second split-plane. The inverse-ridge Rx-reject filter is implemented as a first half-portion and a second half-portion. The first half-portion and the second half-portion are implemented in the second section and the third section, respectively. The first split-plane and the second split-plane are on a zero-current region of the device.

Abstract: A cargo-carrying sweatshirt includes a front panel, a rear panel, a left panel connecting the front panel and the rear panel wherein the left panel has a left sleeve, and a right panel connecting the front panel and the rear panel wherein the right panel has a right sleeve. A head opening is provided at a top portion of the sweatshirt and defined by the front panel and the rear panel. A body opening is provided at a bottom portion of the sweatshirt and is defined by the front panel, the rear panel, the left panel, and the right panel. The sweatshirt includes a plurality of cargo carrying accessories on the front panel, the rear panel, and the sleeves.

Abstract: The mode-whisperer waveguide device includes a main waveguide, a junction waveguide and a pair of recombination arm waveguides. The main waveguide features a spline taper extending along an axis of the main waveguide. The spline taper has been integrated with the normal linear aperture taper. The junction waveguide is attached to the main waveguide. The recombination arm waveguides are attached to the junction waveguide. A first port is coupled to the pair of recombination arm waveguides via a pair of recombination arm transformer steps. The main waveguide, the junction waveguide, the pair of recombination arm waveguides and the pair of recombination arm transformer steps are manufacturable as a monolithic waveguide device that is configured to achieve outstanding higher-order mode suppression due to the gradual dual spline taper which has been integrated with the normal linear taper to the aperture port.

Abstract: A reflector antenna includes a reflector, a feed, and a beamforming network. The feed is spaced apart at a focal distance from the reflector. The feed includes an array of dual linear polarized elements. The beamforming network is operatively coupled to the feed. The beamforming network is configured to generate a Sigma pattern and a Delta pattern in a plane orthogonal to the reflector plane of symmetry.

Abstract: A TE20 launch guidance waveguide hybrid coupler includes a waveguide body, a cavity, a plurality of ports, and a bend along the H-plane. The waveguide body includes a hybrid center portion which is disposed between and is in direct communication with the plurality of ports. The bend along the H-Plane is defined within the hybrid center portion, assists in the launching of the TE20 mode, and results in typically half the axial ratio and mass when compared to traditional hybrid approaches.

Abstract: A polarization waveguide network includes a reactive transmit (TX) power splitter and multiple receive (RX)-reject waveguide filters to reject RX frequencies. The polarization waveguide network further includes a quadrature junction coupler that can couple the RX-reject waveguide filters to an antenna port. The polarization waveguide network is configured to be fabricated in three pieces with two zero-current split planes, and a first piece of the three pieces is used for coupling to the antenna port.

Abstract: An antenna array includes multiple array modules. Each array module includes at least on antenna element including a horn antenna coupled to a polarizer, and a two-piece waveguide filter. The two-piece waveguide filter includes a folded-back waveguide coupled to the horn antenna at one end and to a circuit layer at the other end. The horn antenna includes a multi-mode horn antenna. The two-piece waveguide filter includes a first piece and a second piece that are separately molded. A footprint of the two-piece waveguide filter is within a footprint of an aperture of the horn antenna.

Abstract: A linear multiband waveguide feed network device, which includes a first section, a second section, a third section and an inverse-ridge receive (Rx)-reject filter. The second section is coupled to the first section via a first split-plane. The third section is coupled to the second section via a second split-plane. The inverse-ridge Rx-reject filter is implemented as a first half-portion and a second half-portion. The first half-portion and the second half-portion are implemented in the second section and the third section, respectively. The first split-plane and the second split-plane are on a zero-current region of the device.

Abstract: An agrochemical concentrate comprises lecithin and at least one agrochemical active. The agrochemical concentrate may also comprise a dispersant selected from sucrose ester, alkylpolyglucoside, alkylnaphthalene sulphonates, phosphate ester, sorbitol ester, polyglycerol ester, alkyl sulphates, sodium lauryl sulphate, alkylglucamides, and dialkyl sulphosuccinates. An aqueous formulation comprises a dilution of the agrochemical concentrate in an electrolyte. A pre-blend comprises lecithin and a dispersant. A method of preparing the agrochemical concentrate and a method for treating vegetation are also disclosed.

Abstract: Alloys of GeSbSeTe (GSST) can be used to make actively tunable infrared transmission filters that are small, fast, and solid-state. These filters can be used for hyperspectral imaging, 3D LIDAR, portable bio/chem sensing systems, thermal emission control, and tunable filters. GSST is a low-loss phase-change material that can switch from a low-index (n=3), amorphous state to a high-index (n=4.5), hexagonal state with low loss (k<0.3) over a wavelength range of 2-10 microns or more. The GSST thickness can be selected to provide pure phase modulation, pure amplitude modulation, or coupled phase and amplitude modulation. GSST can be switched thermally in an oven, optically with visible light, or electrically via Joule heating at speeds from kilohertz to Gigahertz. It operates with reversible and polarization independent transmission switching over a wide incident angle (e.g., 0-60 degrees).

Abstract: A transmitter of a feed network includes first and second branches and an integrated branch line coupler that couples the first and second branches. The integrated branch line coupler includes first and second waveguide reject filters in the first and second branches respectively. The first and second waveguide reject filters include one or more single-sided stubs protruding outwardly from outer faces of the first and second waveguide reject filters. The integrated branch line coupler further includes one or more couplers that are coupled between inner faces of the first and second waveguide reject filters. The transmitter includes a core waveguide that is coupled to the first and second branches. The transmitter receives a linearly polarized signal from an input port of the first or second branches and generates a circularly polarized signal in the core waveguide.

Abstract: An antenna array includes multiple array modules. Each array module includes at least on antenna element including a horn antenna coupled to a polarizer, and a two-piece waveguide filter. The two-piece waveguide filter includes a folded-back waveguide coupled to the horn antenna at one end and to a circuit layer at the other end. The horn antenna includes a multi-mode horn antenna. The two-piece waveguide filter includes a first piece and a second piece that are separately molded. A footprint of the two-piece waveguide filter is within a footprint of an aperture of the horn antenna.

Abstract: A transmitter of a feed network includes first and second branches and an integrated branch line coupler that couples the first and second branches. The integrated branch line coupler includes first and second waveguide reject filters in the first and second branches respectively. The first and second waveguide reject filters include one or more single-sided stubs protruding outwardly from outer faces of the first and second waveguide reject filters. The integrated branch line coupler further includes one or more couplers that are coupled between inner faces of the first and second waveguide reject filters. The transmitter includes a core waveguide that is coupled to the first and second branches. The transmitter receives a linearly polarized signal from an input port of the first or second branches and generates a circularly polarized signal in the core waveguide.