A tile subarray includes an upper multi-layer assembly (UMLA) provided from a first plurality of printed circuit boards and a lower multi-layer assembly (LMLA) provided from a second plurality of printed circuit boards Each of the UMLA and LMLA includes one or more radio frequency (RF) interconnects between different circuit layers on different circuit boards which make up the UMLA and LMLA The RF interconnects can include one or more RF matching pads which provide a mechanism for matching impedance characteristics of RF stubs to provide the RF interconnects having desired insertion loss and impedance characteristics over a desired RF operating frequency band The RF matching pads allow the manufacture of circuit boards having RF interconnects without the need to perform any back drill and back fill operation to remove stub portions of the RF interconnects in the UMLA and LMLA

Tile sub-array and related circuits and techniques

Systems and methods for wireless power transmission

The present disclosure describes a methodology for wireless power transmission based on pocket-forming. This methodology may include one transmitter and at least one or more receivers, being the transmitter the source of energy and the receiver the device that is desired to charge or power. The transmitter may identify and locate the device to which the receiver is connected and thereafter aim pockets of energy to the device in order to power it. Pockets of energy may be generated through constructive and destructive interferences, which may create null-spaces and spots of pockets of energy ranged into one or more radii from transmitter. Such feature may enable wireless power transmission through a selective range, which may limit operation area of electronic devices and/or may avoid formation of pockets of energy near and/or over certain areas, objects and people.

Wireless power transmission with selective range

A method for controlling communication between wireless power transmitter managers is disclosed. According to some aspects of this embodiment, wireless power transmission system may include one or more wireless power transmitter managers and one or more wireless power receivers for powering various customer devices. A WiFi connection may be established between wireless power transmitter managers to share information between system devices. Wireless power transmitter manager may need to fulfill two conditions to control power transfer over a customer device; customer device's signal strength threshold has to be significantly greater than 50%, such as 55% or more of the signal strength measured by all other wireless power transmitter managers and has to remain significantly greater than 50% for a minimum amount of time.

System and method for controlling communication between wireless power transmitter managers

A structural grid is provided with continuous and discontinuous beam members coupled by splices, a front structure coupled to the structural grid, the front structure including a walkway and cables, a radome coupled to the front structure. The structural grid is coupled to a plurality of antenna subassemblies. The antenna subassemblies have a forward housing including an RF manifold coupled to a circulator, an aft housing coupled to the forward housing, containing a line replaceable unit that is serviceable or maintainable through the aft housing.

Modular active phased array

A radiator includes a waveguide having an aperture and a patch antenna disposed in the aperture. In one embodiment, an antenna includes an array of waveguide antenna elements, each element having a cavity, and an array of patch antenna elements including an upper patch element and a lower patch element disposed in the cavity.

Slot coupled, polarized, egg-crate radiator

A mixed-signal, multilayer printed wiring board fabricated in a single lamination step is described. The PWB includes one or more radio frequency (RF) interconnects between different circuit layers on different circuit boards which make up the PWB. The PWB includes a number of unit cells with radiating elements and an RF cage disposed around each unit cell to isolate the unit cell. A plurality of flip-chip circuits are disposed on an external surface of the PWB and a heat sink can be disposed over the flip chip components.

Transmit/Receive Daughter Card With Integral Circulator

Described is a mobile radar system which provides both persistent surveillance and tracking of objects with adaptive measurement rates for both maneuvering and non-maneuvering objects. The mobile radar system includes a vehicle having mounted therein an active, electronically-steerable, phased array radar system movable between a stowed position and a deployed position and wherein the phased array radar system is operational in both the deployed and stored positions and also while the vehicle is either stationary or moving. Thus, the mobile radar system described herein provides for longer time on target and longer integration times, increased radar sensitivity and improved Doppler resolution and clutter rejection. This results in a highly mobile radar system appropriate for use in a battlefield environment and which supports single-integrated-air-picture metrics including but not limited to track purity, track completeness, and track continuity and thus improved radar performance in a battlefield.

Mobile radar system

A planar circulator assembly includes a dielectric substrate having a first surface and an opposing second surface, a plurality of circulator circuits, each circulator circuit having a first ferrite receiving pad disposed on the first surface and a second ferrite receiving pad; disposed on the second surface a first sub-assembly board disposed on the first surface having a plurality of first apertures, a plurality of ferrite-magnet sub-assemblies, each ferrite-magnet sub-assembly disposed in a corresponding first aperture and aligned with a corresponding first ferrite receiving pad and electromagnetically coupled to the corresponding first ferrite receiving pad. The assembly further includes a second sub-assembly board disposed on the second surface having a plurality of second apertures, and a plurality of ferrites, each ferrite disposed in a corresponding second aperture and aligned with a corresponding second ferrite receiving pad and electromagnetically coupled to the corresponding second ferrite receiving pad.

Angelo M. Puzella

Papers

Tile sub-array and related circuits and techniques

Slot coupled, polarized, egg-crate radiator

Transmit/Receive Daughter Card With Integral Circulator

Mobile radar system

Embedded planar circulator