Premium
5.8 GHz orientation‐specific extruded‐fin heatsink antennas for 3D RF system integration
Author(s) -
Covert Lance,
Lin Jenshan,
Janning Dan,
Dalrymple Thomas
Publication year - 2008
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.23478
Subject(s) - heat sink , directivity , microstrip antenna , antenna efficiency , patch antenna , antenna gain , materials science , radiation pattern , antenna (radio) , electrical engineering , antenna measurement , microwave , optoelectronics , engineering , electronic engineering , acoustics , telecommunications , physics
In high‐power RF transmitter applications, the heatsink can be used as an antenna for improved antenna performance and increased integration. Extruded‐fin heatsink antennas designed at 5.8 GHz are orientation‐specific when the heatsink base replaces the patch of a patch antenna. In this case, the orientation of the fins with respect to the patch edges plays a significant role in the antenna performance and must be considered. The results show that the heatsink antenna using a lossy, low‐cost FR4 substrate increases the bandwidth from 3.1 to 17.6% and radiation efficiency from 62 to 87% compared with the patch antenna on the same substrate. Also, the orientation has a significant effect on the directivity, gain, and radiation pattern. By combining two functions into one structure, the component count in a system is reduced and the antenna performance can be improved. © Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1826–1831, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23478