volume | PIER Journals

Abstract

A simple, small-sized, printed monopole antenna loaded with a chip inductor for achieving dual-band operation in notebook computers is introduced. The design consisted of a simple 5 GHz monopole, a chip inductor, and a tuning end portion. With the inductor inserted at the end of the 5 GHz monopole and connected to the tuning portion, the lower band resonance in the 2.4 GHz band can be attained, together with a reduced design footprint for 2.4 GHz operation. The frequency ratio of the upper and lower bands were also controllable by inductance values. The results showed that the antenna was capable of operating in 2.4 GHz (2400-2484 MHz) and 5 GHz (5150-5825 MHz) wireless local area network (WLAN) bands and yet occupied a small size of 5 mm × 12 mm (about 0.04l × 0.09l at 2.4 GHz) only.

1. Liao, S. J., K. L.Wong, and L. C. Chou, "Small-size uniplanar coupled-fed PIFA for 2.4/5.2/5.8 GHz WLAN operation in the laptop computer," Microwave Opt. Technol. Lett., Vol. 51, 1023-1028, 2009.
doi:10.1002/mop.24206 Google Scholar

2. Kang, T. W. and K. L. Wong, "Very small size printed monopole with embedded chip inductor for 2.4/5.2/5.8 GHz WLAN laptop computer antenna," Microwave Opt. Technol. Lett., Vol. 52, 171-177, 2010.
doi:10.1002/mop.24843 Google Scholar

3. Sim, C. Y. D., C. C. Chen, X. Y. Zhang, Y. L. Lee, and C. Y. Chiang, "Very small-size uniplanar printed monopole antenna for dual-band WALN laptop computer applications," IEEE Trans. Antennas Propagat., Vol. 65, 2916-2992, 2017.
doi:10.1109/TAP.2017.2695528 Google Scholar

4. Su, S. W., Y. T. Hsieh, and S. C. Chen, "Integration of very-low-profile slot antenna into notebook metal cover with narrow bezel," Proc. Int. Symposium on Antennas and Propagat., 1-2, Phuket, Thailand, 2017. Google Scholar

5. Su, S. W., "Very-low-profile, 2.4/5-GHz WLAN monopole antenna for large screen-to-body-ratio notebook computers," Microwave Opt. Technol. Lett., Vol. 60, 1313-1318, 2018.
doi:10.1002/mop.31156 Google Scholar

6. Su, S. W., C. T. Lee, and S. C. Chen, "Compact, printed, tri-band loop antenna with capacitively-driven feed and end-loaded inductor for notebook computers," IEEE Access, Vol. 6, 6692-6699, 2018.
doi:10.1109/ACCESS.2018.2794606 Google Scholar

7. Su, S. W., "Capacitor-inductor-loaded, small-sized loop antenna for WLAN notebook computers," Progress In Electromagnetics Research M, Vol. 71, 179-188, 2018.
doi:10.2528/PIERM18061904 Google Scholar

8. Wong, K. L. and S. C. Chen, "Printed single-strip monopole using a chip inductor for penta-band WWAN operation in the mobile phone," IEEE Trans. Antennas Propagat., Vol. 58, 1011-1014, 2011.
doi:10.1109/TAP.2009.2039324 Google Scholar

9. Lee, C. T. and S. W. Su, "Tri-band, stand-alone, PIFA with parasitic, inverted-L plate and vertical ground wall for WLAN applications," Microwave Opt. Technol. Lett., Vol. 53, 1797-1803, 2011.
doi:10.1002/mop.26116 Google Scholar

10. ANSYS HFSS, ANSYS Inc., https://www.ansys.com/Products/Electronics/ANSYS-HFSS. Google Scholar

11. SG 64, SATIMO, , http://www.mvg-world.com/en/products/field product family/antenna-measurement-2/sg-64. Google Scholar

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

13. Balanis, C. A., Antenna Theory: Analysis and Design, 3rd Ed., Chapter 2, Wiley, Hoboken, 2NJ, 012.

Dr. Saou-Wen Su