Hostname: page-component-8448b6f56d-jr42d Total loading time: 0 Render date: 2024-04-24T13:47:52.237Z Has data issue: false hasContentIssue false
  • English
  • Français

Small embedded LTE/WWAN antenna integrated with keyboard ground plane in a laptop computer

Published online by Cambridge University Press:  30 August 2016

Shu-Chuan Chen ,
Yun-Tsan Lee  and
Po-Wei Wu
Shu-Chuan Chen*
Affiliation:
National Defense University, 75 Shiyuan Road, Daxi Township, Taoyuan County 33551, Taiwan, R.O.C. Phone: +886 985887647
Yun-Tsan Lee
Affiliation:
National Defense University, 75 Shiyuan Road, Daxi Township, Taoyuan County 33551, Taiwan, R.O.C. Phone: +886 985887647
Po-Wei Wu
Affiliation:
National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan, R.O.C.
*
Corresponding author: S.-C. Chen Email: chensc@ema.ee.nsysu.edu.tw
Get access Rights & Permissions [Opens in a new window]

Abstract

A novel small embedded long-term evolution/wireless wide area network (LTE/WWAN) antenna integrated with the keyboard ground plane in a laptop computer is presented. The antenna is installed on a notched region (40 × 8 mm2) of the keyboard ground plane at a distance of 10 mm from the laptop computer hinge. A coupled-fed loop antenna was used because of its suitability for integration with the ground plane and achieving wide operating bands. This antenna can not only be configured to have a compact configuration but also be designed to excite several resonant modes of the hinge slot between the display ground plane and the keyboard ground plane. The proposed antenna comprises a hook-shaped strip and a shorted strip, which together form a coupled-fed loop that not only has a compact size when printed on a 0.8-mm-thick FR4 substrate 40 × 8 mm2 in size but also provides eight-band LTE/WWAN operation. The proposed antenna can cover LTE/WWAN operation in the 698–960 and 1710–2690 MHz bands. Details of the antenna structure are provided here. The proposed antenna was fabricated and tested, and measurement and simulation results are presented. The measured antenna efficiency was approximately 45–80% in the lower band and approximately 52–75% in the upper band.

Keywords

LTE/WWAN antennasHinge slot antennasCoupled loop antennasComputer antennas
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 4 , May 2017 , pp. 959 - 964
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1] 3GPP Long Term Evolution: 2013 [Online]. Available at: http://en.wikipedia.org/wiki/3GPP_Long_Term_Evolution Google Scholar
[2] Wong, K.L.; Tsai, C.Y.: Combined-type triple-wideband LTE tablet computer antenna. Microw. Opt. Technol. Lett., 57 (2015), 1262–1267.Google Scholar
[3] Wong, K.L.; Liao, Z.G.: Small-size dual-wideband monopole antenna with inductive and capacitive feeding branches for LTE tablet computer application. Microw. Opt. Technol. Lett., 57 (2015), 853–860.Google Scholar
[4] Wong, K.L.; Liao, Z.G.: Passive reconfigurable triple-wideband antenna for LTE tablet computer. IEEE Trans. Antennas Propag., 63 (2015), 901–908.Google Scholar
[5] Kang, T.W.; Wong, K.L.: Simple two-strip monopole with a parasitic shorted strip for internal eight-band LTE/WWAN Laptop Computer. Microw. Opt Technol. Lett., 53 (2011), 706–712.Google Scholar
[6] Wong, K.L.; Lin, W.J.: WWAN/LTE printed slot antenna for tablet computer application. Microw. Opt Technol Lett., 54 (2012), 44–49.Google Scholar
[7] Wong, K.L.; Chang, Y.W.; Chen, S.C.: Bandwidth enhancement of small-size planar tablet computer antenna using a parallel-resonant spiral slit. IEEE Antennas Wireless Propag., 60 (2012), 1705–1711.Google Scholar
[8] Wong, K.L.; Wu, T.J.: Small-size LTE/WWAN coupled-fed loop antenna with band-stop matching circuit for tablet computer. Microw. Opt. Technol. Lett., 54 (2012), 1189–1193.Google Scholar
[9] Lu, J.H.; Wang, Y.S.: Internal uniplanar antenna for LTE/GSM/ UMTS operation in a tablet computer. IEEE Antennas Wireless Propag., 61 (2013), 2841–2846.Google Scholar
[10] Wong, K.L.; Liu, Y.C.; Chou, L.C.: Bandwidth enhancement of WWAN LTE tablet computer antenna using embedded parallel resonant circuit. Microw. Opt. Technol. Lett., 54 (2012), 305–309.CrossRefGoogle Scholar
[11] Wong, K.L.; Chen, M.T.: Small-size LTE/WWAN printed loop antenna with an inductively coupled branch strip for bandwidth enhancement in the tablet computer. IEEE Antennas Wireless Propag., 61 (2013), 6144–6151.Google Scholar
[12] Lu, J.H.; Tsai, F.C.: Planar internal LTE/WWAN monopole antenna for tablet computer application. IEEE Antennas Wireless Propag., 61 (2013), 4358–4363.CrossRefGoogle Scholar
[13] Wong, K.L.; Chen, L.Y.: Small-size LTE/WWAN tablet device antenna with two hybrid feeds. IEEE Antennas Wireless Propag., 62 (2014), 2926–2934.Google Scholar
[14] Chen, L.Y.; Wong, K.L.: 2.4/5.2/5.8 GHz WLAN antenna for the ultrabook computer with metal housing, 2013 National Symp. Telecommunications, Taiwan, 2013.Google Scholar
[15] Chang, S.H.; Liao, W.J.: A compact 3D antenna with comprehensive LTE band coverage for use on notebook hinge, IEEE Asia-Pacific conf. on antennas and propagation, Singapore, 2012.Google Scholar
[16] Ban, Y.L.; Chen, J.H.; Sun, S.C.; Li, J.L.-W.; Guo, J.H.: Printed wideband antenna with chip-capacitor-loaded inductive strip for LTE/GSM/UMTS WWAN wireless USB dongle applications. Prog. Electromag. Res., 128 (2012), 313–329.Google Scholar
[17] Ban, Y.L.; Chen, J.H.; Ying, L.J.; Li, J.L.W.; Wu, Y.J.: Ultrawideband antenna for LTE/GSM/UMTS wireless USB dongle applications. IEEE Antennas Wireless Propag. Lett., 11 (2012), 403–406.Google Scholar
[18] ANSYS HFSS: Ansoft Corp., Pittsburgh, PA, Available at: http://www.ansys.com/products/hf/hfss/.Google Scholar