Bae Systems Information and Electronic Systems Integration Inc.

Stephen A Hedges

John T Apostolos

Kenneth R Erikson

David E Meharry

Jared P Majcher

Kevin W Sliech

Richard C Ball

An integrated heat exchanger and power delivery system for high powered electronic modules is disclosed. In one embodiment, the system includes a coolant manifold. The system further includes a heat exchanger and power delivery module. The heat exchanger and power delivery module comprises a plurality of heat exchanger and power delivery elements that are coupled to the coolant manifold. The system furthermore includes a high powered electronic module, wherein the high powered module comprises an array of sub-modules. The array of sub-modules is disposed on the plurality of heat exchanger and power delivery elements. The plurality of heat exchanger and power delivery elements are configured to substantially simultaneously deliver power and extract heat away from the sub-modules.

Integrated heat exchanger and power delivery system for high powered electronic modules

Whether or not one utilizes direct DC coupling of the microradios to the antenna feed points or couples the RF energy from the dipoles associated with the spaced-apart contact pads on the microradio, in the subject invention one selects only those microradios that are within a certain variance of a preferred direction and then makes sure that the polarization direction of all of these radios is in the preferred direction are identical, in one embodiment by utilizing digital coding, which both activates the microradio and is used to sense the polarity associated with the connection from the signal source to the contact pads.

Method and apparatus for coupling multiple microradios to an RFID tag antenna

An enhanced duplexer () which includes a combination of high dynamic range (HDR) amplifiers () and a naovel signal cancellation circuit topology (). Return signals from the circulator () are fed into the first HDR amplifier (). A portion of the transmit signal is sampled with a directional coupler () and amplified with a second HDR amplifier () and then combined with the output of the first HDR amplifier () using a second directional coupler (). The gain and phase of the second io amplifier () are adjusted so the leakage signals are canceled () to enable a radar system to simultaneously transmit and receive signals to and from an antenna with increased sensitivity of operation.

Duplexer for simultaneous transmit and receive radar systems

A nested cavity embedded loop mode antenna is provided with an ultra wide band response by nesting individual embedded cavity meander line loaded antenna modules, with the meander lines coupled to a ground plane plate either capacitively or directly so as to provide as much as a 27:1 ratio of high frequency to low frequency cutoff. The nested meander line structure is exceptionally compact and eliminates the problem of a null in the antenna radiation pattern perpendicular to the face of the antenna, thus to provide a loop type antenna pattern at all frequencies across which the antenna is to be operated. The use of the nested meander line configuration provides a flush mount for the antenna having a footprint associated with the larger of the meander line cavities and thus the lowest frequency of operation, the nesting precluding the necessity of providing separate side-by-side meander line loaded antennas which would increase the real estate required. Additionally, a shunted slotline embodiment of the cavity-embedded antenna substitutes shunted slots for meander lines to provide for a low-cost wide bandwidth cavity-embedded antenna.

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Nashua, NH, United States of America

Stephen A Hedges