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Internal multiband surface‐mount monopole slot chip antenna for mobile phone application
Author(s) -
Chang ChihHua,
Wong KinLu
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.23342
Subject(s) - umts frequency bands , gsm , monopole antenna , electrical engineering , engineering , base station , omnidirectional antenna , chip , antenna (radio) , cover (algebra) , electronic engineering , telecommunications , mechanical engineering
A multiband monopole slot chip antenna surface‐mountable on the system circuit board of the mobile phone is presented. The antenna comprises two monopole slots of different lengths, which are folded and attached onto a foam base in the study. With a compact volume of 30 × 10 × 8 mm 3 (2.4 cm 3 ), the antenna can generate a lower band at about 900 MHz to cover GSM operation and a very wide upper band (bandwidth >1 GHz) to cover DCS/PCS/UMTS operation and 2.4 GHz WLAN operation. It is also promising to use a ceramic base of relative permittivity 7.8 to replace the foam base of the antenna. In this case, the antenna volume can be reduced to be 24 × 10 × 8 mm 3 (1.92 cm 3 ) only, yet still capable of covering GSM/DCS/PCS/UMTS quad‐band operation. The proposed antenna is studied, and obtained results are presented and discussed. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1273–1279, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23342