Hughes Network Systems, LLC

Lal Mohan Bhowmik

Michael Buckley

Varada Rajan Komanduri

Tom Walter

Bingqian Lu

An AESA (Active Electronically Scanned Array), including: a PCB (Printed Circuit Board) substrate having an obverse surface; TRMs (Transmit/Receive Modules) disposed on the obverse surface; thermal pedestals wherein each thermal pedestal includes a wall, having a wall height, including wall surfaces and one of the wall surfaces being a contact surface; and a TIM (Thermal Interface Material), having a TIM height, disposed between a respective contact surface of the thermal pedestals and the obverse surface. The thermal pedestals are discrete with respect to one another, the contact surfaces of the thermal pedestals are interspersed about the TRMs, the thermal pedestals do not contact the TRMs, the TIM is electrically and thermally conductive, and the wall height plus the TIM height is sufficient to suppress resonances of the TRMs below a frequency greater than the Tx and Rx frequency bands of the TRMs.

Cavity resonance suppression using discrete thermal pedestals in active electronically scanned array

An AESA (Active Electronically Scanned Array), including: a PCB (Printed Circuit Board) substrate having an obverse surface; TRMs (Transmit/Receive Modules) disposed on the obverse surface; thermal pedestals wherein each thermal pedestal includes a wall, having a wall height, including wall surfaces and one of the wall surfaces being a contact surface; and a TIM (Thermal Interface Material), having a TIM height, disposed between a respective contact surface of the thermal pedestals and the obverse surface. A plurality of the thermal pedestals are physically interconnected, the TIM is electrically and thermally conductive, and the wall height plus the TIM height is sufficient to suppress resonances of the TRMs below a frequency greater than a Tx and Rx frequency band of the TRMs.

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Montogomery Village, MD, United States of America

Lal Mohan Bhowmik