A broadband integrated receiver for receiving input signals and outputting composite video and audio signals is disclosed. The receiver employs an up-conversion mixer and a down-conversion mixer in series to produce an intermediate signal. An intermediate filter between the mixers performs coarse channel selection. The down-conversion mixer may be an image rejection mixer to provide additional filtering.

Highly integrated television tuner on a single microcircuit

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

The present invention may provide various electric receiver arrangements which may be used to provide wireless power transmission using suitable power transmission techniques such as pocket-forming. In some embodiments, receivers may include at least one antenna connected to at least one rectifier and one power converter. In other embodiments, receivers including a plurality of antennas, a plurality of rectifiers or a plurality of power converters may be provided. In addition, receivers may include communications components which may allow for communication to various electronic equipment including transmitters, phones, computers and others. Lastly, various implementation arrangements may be provided for including receivers in electronic devices.

Receivers for Wireless Power Transmission

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

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 thermal management system includes an air duct assembly comprising a supply air duct having an air inlet opening, a return air duct having an air exit opening and a plurality of distribution air ducts configured to be in fluid communication with the air inlet opening of the supply air duct and with the air exit opening of the return air duct. A fan is disposed within the air duct assembly to direct air from the air inlet opening of the supply air duct through the supply air duct and out the air exit opening of the return air duct. The fan and supply duct are disposed to direct air over a first surface of a heat sink. A second opposing surface of the heat sink is disposed over and configured to be in thermal contact with a plurality of active circuits disposed on a first surface of a radio frequency (RF) multi-layer printing wiring board (PWB).

Method and Apparatus for Thermal Management of a Radio Frequency System

A multilayer circuit board assembly includes one or more radio frequency (RF) interconnects between different circuit layers on different circuit boards which make up the circuit board assembly. 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 multilayer circuit board assembly.

Radio frequency interconnect circuits and techniques

A compact RF monopulse receiver circuit having a relatively low noise figure which is particularly useful for operation in the millimeter wave frequency range is described. The compact monopulse receiver finds use in small projectile and small missile applications. Also, a combination of transmit signal protection circuitry and receiver circuit architecture allows the RF monopulse receiver circuit to operate in a missile or other projectile which utilizes high RF power transmit signals. The RF monopulse receiver circuit can directly provide a radiation pattern for target detection and tracking or alternatively, the RF monopulse receiver circuit can function as a monopulse feed circuit which can be used, for example, in a quasi-optically fed reflector antenna.

Joseph A. Licciardello

Papers

Tile sub-array and related circuits and techniques

Mobile radar system

Method and Apparatus for Thermal Management of a Radio Frequency System

Radio frequency interconnect circuits and techniques

Radio frequency receiving circuit