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A high‐efficiency internal WLAN antenna for wireless devices operating in close proximity to a lossy medium
Author(s) -
Wong KinLu,
Chang ChihHua,
Lin ChunI
Publication year - 2005
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.21134
Subject(s) - electrical engineering , lossy compression , antenna efficiency , loop antenna , omnidirectional antenna , antenna measurement , multi band device , microstrip antenna , patch antenna , engineering , antenna (radio) , electronic engineering , coaxial antenna , computer science , artificial intelligence
This paper presents a dual‐loop patch antenna capable of providing high radiation efficiency for operation in close proximity to a lossy medium with permittivity and conductivity close to those of a human torso or arm. For operation as an internal WLAN (wireless local area network) antenna in a wireless device, the dual‐loop patch antenna with a low profile of 3 mm can cover the operating bandwidth of the 2.4‐GHz band (2400–2484 MHz), showing a high radiation efficiency of about 88%, when placed very close to the lossy medium with only 1‐mm spacing. The obtained results make the proposed antenna very promising for body‐worn or wearable antenna applications. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 233–236, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21134