Vol. 62
Latest Volume
All Volumes
PIERL 119 [2024] PIERL 118 [2024] PIERL 117 [2024] PIERL 116 [2024] PIERL 115 [2024] PIERL 114 [2023] PIERL 113 [2023] PIERL 112 [2023] PIERL 111 [2023] PIERL 110 [2023] PIERL 109 [2023] PIERL 108 [2023] PIERL 107 [2022] PIERL 106 [2022] PIERL 105 [2022] PIERL 104 [2022] PIERL 103 [2022] PIERL 102 [2022] PIERL 101 [2021] PIERL 100 [2021] PIERL 99 [2021] PIERL 98 [2021] PIERL 97 [2021] PIERL 96 [2021] PIERL 95 [2021] PIERL 94 [2020] PIERL 93 [2020] PIERL 92 [2020] PIERL 91 [2020] PIERL 90 [2020] PIERL 89 [2020] PIERL 88 [2020] PIERL 87 [2019] PIERL 86 [2019] PIERL 85 [2019] PIERL 84 [2019] PIERL 83 [2019] PIERL 82 [2019] PIERL 81 [2019] PIERL 80 [2018] PIERL 79 [2018] PIERL 78 [2018] PIERL 77 [2018] PIERL 76 [2018] PIERL 75 [2018] PIERL 74 [2018] PIERL 73 [2018] PIERL 72 [2018] PIERL 71 [2017] PIERL 70 [2017] PIERL 69 [2017] PIERL 68 [2017] PIERL 67 [2017] PIERL 66 [2017] PIERL 65 [2017] PIERL 64 [2016] PIERL 63 [2016] PIERL 62 [2016] PIERL 61 [2016] PIERL 60 [2016] PIERL 59 [2016] PIERL 58 [2016] PIERL 57 [2015] PIERL 56 [2015] PIERL 55 [2015] PIERL 54 [2015] PIERL 53 [2015] PIERL 52 [2015] PIERL 51 [2015] PIERL 50 [2014] PIERL 49 [2014] PIERL 48 [2014] PIERL 47 [2014] PIERL 46 [2014] PIERL 45 [2014] PIERL 44 [2014] PIERL 43 [2013] PIERL 42 [2013] PIERL 41 [2013] PIERL 40 [2013] PIERL 39 [2013] PIERL 38 [2013] PIERL 37 [2013] PIERL 36 [2013] PIERL 35 [2012] PIERL 34 [2012] PIERL 33 [2012] PIERL 32 [2012] PIERL 31 [2012] PIERL 30 [2012] PIERL 29 [2012] PIERL 28 [2012] PIERL 27 [2011] PIERL 26 [2011] PIERL 25 [2011] PIERL 24 [2011] PIERL 23 [2011] PIERL 22 [2011] PIERL 21 [2011] PIERL 20 [2011] PIERL 19 [2010] PIERL 18 [2010] PIERL 17 [2010] PIERL 16 [2010] PIERL 15 [2010] PIERL 14 [2010] PIERL 13 [2010] PIERL 12 [2009] PIERL 11 [2009] PIERL 10 [2009] PIERL 9 [2009] PIERL 8 [2009] PIERL 7 [2009] PIERL 6 [2009] PIERL 5 [2008] PIERL 4 [2008] PIERL 3 [2008] PIERL 2 [2008] PIERL 1 [2008]
2016-09-09
Metal-Frame GPS Antenna for Smartwatch Applications
By
Progress In Electromagnetics Research Letters, Vol. 62, 41-47, 2016
Abstract
The integration of a loop antenna into the top metal frame of a smartwatch wearable device is introduced. The loop antenna was made of a 1-mm thick, rectangular metal frame, which was stacked 1.5 mm above the lower metal frame of the watch having a size of 7 mm × 35 mm × 40 mm. The system circuit board was encircled by the lower, rectangular metal frame with a 1 mm gap between the perimeter of the ground plane and the metal frame. The top metal frame was fed in a corner on the frame's longer edge with two shorting portions short-circuited to the system ground. By carefully positioning the two shorting for the top metal frame, the proposed loop antenna can provide the global positioning system (GPS) operation at 1575 MHz for smartwatch applications.
Citation
Saou-Wen Su, and Cheng-Tse Lee, "Metal-Frame GPS Antenna for Smartwatch Applications," Progress In Electromagnetics Research Letters, Vol. 62, 41-47, 2016.
doi:10.2528/PIERL16053009
References

1. Chen, Y. S. and T. Y. Ku, "A low-profile wearable antenna using a miniature high impedance surface for smartwatch applications," IEEE Wireless Antennas Propagat. Lett., Vol. 15, 1144-1147, 2016.
doi:10.1109/LAWP.2015.2496366

2. Su, S. W. and Y. T. Hsieh, "Integrated metal-frame antenna for smartwatch wearable device," IEEE Trans. Antennas Propagat., Vol. 63, 3301-3305, 2015.
doi:10.1109/TAP.2015.2428736

3. Wu, D., S. W. Cheung, Q. L. Li, and T. I. Yuk, "Slot antenna for all-metal smartwatch applications," European Conf. Antennas Propagat., 1144-1147, Davos, Switzerland, 2016.

4. Ahn, J., S. Kim, M. J. Lee, A. S. Kim, and Y. Kim, "Small global positioning system antennas on a printed circuit board for mobile handsets loaded with lumped elements," Microwave Opt. Technol. Lett., Vol. 55, 576-580, 2013.
doi:10.1002/mop.27350

5. Su, S. W., "Linearly-polarized patch PIFA for GPS/GLONASS operation for tablet-computer applications," Microwave Opt. Technol. Lett., Vol. 57, 149-153, 2015.
doi:10.1002/mop.28800

6. Wong, K. L., Z. G. Liao, and W. Y. Li, "Hybrid loop/monopole antenna with a passive bandstop circuit for the LTE/GPS operation in the tablet computer," Microwave Opt. Technol. Lett., Vol. 58, 630-635, 2016.
doi:10.1002/mop.29635

7. Su, S. W., "Concurrent dual-band six-loop-antenna system with wide 3-dB beamwidth radiation for MIMO access points," Microwave Opt. Technol. Lett., Vol. 52, 1253-1258, 2010.
doi:10.1002/mop.25208

8. Su, S. W., "High-gain dual-loop antennas for MIMO access points in the 2.4/5.2/5.8 GHz bands," IEEE Trans. Antennas Propagat., Vol. 58, 2412-2419, 2010.
doi:10.1109/TAP.2010.2048871

9. Su, S. W., "Integration of loop and slot antennas into one-piece metal plate for concurrent 2.4- and 5-GHz wireless local area network operation," Microwave Opt. Technol. Lett., Vol. 54, 815-820, 2012.
doi:10.1002/mop.26624

10. Su, S. W., "Compact four-loop-antenna system for concurrent, 2.4- and 5-GHz WLAN operation," Microwave Opt. Technol. Lett., Vol. 56, 208-215, 2014.
doi:10.1002/mop.28020

11. ANSYS HFSS, ANSYS Inc., http://www.ansys.com/Products/Electronics/ANSYS-HFSS.

12. SG 64, SATIMO, , http://www.satimo.com/content/products/sg-64.

13. Wang, J. H., "Antennas for global navigation satellite system (GNSS)," Proc. IEEE, Vol. 100, 2349-2355, 2012.
doi:10.1109/JPROC.2011.2179630

14. Volakis, J. L., Antenna Engineering Handbook, 4th Ed., Chapter 6, 16-19, McGraw-Hill, New York, 2007.

15. Balanis, C. A., Antenna Theory: Analysis and Design, 3rd Ed., Chapter 2, Wiley, New York, 2012.

16. CTIA, The Wireless Association, , http://www.ctia.org/.

17. Forearm phantom with hand, SPEAG, , Schmid & Partner Engineering AG, http://www.speag.com/products/em-phantom/hands/forearm-2/.

18. Sojuyigbe, S. and K. Daniel, "Wearables/IOT devices challenges and solutions to integration of miniature antennas in close proximity to the human body," IEEE Symposium on Electromagnetic Compatibility and Signal Integrity, 75-78, Santa Clara, CA, 2015.