US 9,813,082 B2
Heat spreader with thermally coductive foam core
Mo Bai, San Jose, CA (US); and Vadim Gektin, San Jose, CA (US)
Assigned to FUTUREWEI TECHNOLOGIES, INC., Plano, TX (US)
Filed by Futurewei Technologies, Inc., Plano, TX (US)
Filed on Oct. 8, 2015, as Appl. No. 14/878,894.
Prior Publication US 2017/0104500 A1, Apr. 13, 2017
Int. Cl. G06F 1/20 (2006.01); H05K 7/20 (2006.01); H04B 1/036 (2006.01); F28F 13/00 (2006.01); H01L 23/34 (2006.01); H01L 23/367 (2006.01)
CPC H04B 1/036 (2013.01) [F28F 13/003 (2013.01); G06F 1/20 (2013.01); H01L 23/34 (2013.01); H01L 23/3672 (2013.01); H05K 7/2039 (2013.01); H05K 7/20854 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A remote radio unit (RRU) comprising:
a rear side of the RRU comprising a base plate and sidewalls;
a single cover for the RRU, the cover covering the rear side, wherein the rear side and the cover form an outside of the RRU and enclose an inside; and
electronic transceiver circuitry located in the inside of the RRU,
wherein the cover, the base plate or the sidewalls includes an enclosure with a hollow core formed within the cover, the base plate or the sidewalls, and
wherein a foam core that comprises pores or voids is disposed and sealed within the hollow core formed within the cover, the base plate or the sidewalls.