Accession Number : ADA567661


Title :   Integrated Printed Circuit Board (PCB) Active Cooling With Piezoelectric Actuator


Descriptive Note : Final rept.


Corporate Author : ARMY AVIATION AND MISSILE RESEARCH DEVELOPMENT ENG CTR REDSTONE ARSENAL AL WEAPONS DEVELOPMENT AND INTEGRATION DIRECTORATE


Personal Author(s) : Booth, Janice C ; Hudson, Tracy ; English, Brian A ; Whitley, Michael R ; Kranz, Michael S


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a567661.pdf


Report Date : Sep 2012


Pagination or Media Count : 21


Abstract : Thermal management is challenging in Radio Frequency (RF) communication and radar systems that require high-power levels for operation and reliability as well as small footprints to control intrinsic losses and meet design constraints. An interesting approach uses discrete, in-situ fluid handling and embedded synthetic jet drivers to enhance local cooling at the component. In this approach, fluid cavities and actuators are integrated into the Printed Circuit Board (PCB) near the component. Magnetic and piezoelectric actuators have proven effective in other less demanding applications. The challenge to adapting from magnetic to piezoelectric actuators is to achieve high flow rates because piezoelectric actuators have lower displacement and higher frequencies. This investigation explored frequency and displacement effects on cooling rates for piezoelectric actuators embedded in PCB. Further concept development includes integration with thermal ground planes.


Descriptors :   *COOLING , *PRINTED CIRCUIT BOARDS , ACTUATORS , ANTENNA COMPONENTS , PHASED ARRAYS , PIEZOELECTRICITY


Subject Categories : Electrical and Electronic Equipment
      Air Condition, Heating, Lighting & Ventilating


Distribution Statement : APPROVED FOR PUBLIC RELEASE