A Multiband Slot Antenna for GPS/WiMAX/WLAN Systems

The design of a four-band slot antenna for the global positioning system (GPS), worldwide interoperability for microwave access (WiMAX), and wireless area network (WLAN) is presented. The antenna consists of a rectangular slot with an area of 0.37λg × 0.14λg = 48 × 18 mm2 (where λg is the guide wavelength), a T-shaped feed patch, an inverted T-shaped stub, and two E-shaped stubs to generate four frequency bands. The radiating portion and total size of the antenna are less than those of the tri-band antennas studied in literature. Parametric study on the parameters for setting the four frequency bands is presented and hence the methodology of using the design for other frequency bands is proposed. The multiband slot antenna is studied and designed using computer simulation. For verification of simulation results, the antenna is fabricated and measured. The simulated and measured return losses, radiation patterns, realized peak gains, and efficiencies of the antenna are presented. Measured results show that the antenna can be designed to cover the frequency bands from 1.575 to 1.665 GHz for the GPS system, 2.4-2.545 GHz for the IEEE 802.11b&g WLAN systems, 3.27- 3.97 GHz for the WiMAX system, and 5.17-5.93 GHz for the IEEE 802.11a WLAN system. The effects of the feeding cable used in measurement and of the cover are also investigated.

[1]  Saou-Wen Su,et al.  High-Gain Dual-Loop Antennas for MIMO Access Points in the 2.4/5.2/5.8 GHz Bands , 2010, IEEE Transactions on Antennas and Propagation.

[2]  Kin-Lu Wong,et al.  Printed $\lambda/8$ -PIFA for Penta-Band WWAN Operation in the Mobile Phone , 2009, IEEE Transactions on Antennas and Propagation.

[3]  Jui-Han Lu,et al.  Planar Compact Slot Antenna With Multi-Band Operation for IEEE 802.16m Application , 2013 .

[4]  L. J. Foged,et al.  Modeling of cable for measurements of small monopole antennas , 2011, 2011 Loughborough Antennas & Propagation Conference.

[5]  Meng-Ju Chiang,et al.  Compact Multifrequency Slot Antenna Design Incorporating Embedded Arc-Strip , 2012, IEEE Antennas and Wireless Propagation Letters.

[6]  Yingzeng Yin,et al.  Compact Triband Square-Slot Antenna With Symmetrical L-Strips for WLAN/WiMAX Applications , 2011, IEEE Antennas and Wireless Propagation Letters.

[7]  T. Itoh,et al.  Design and Characterization of Miniaturized Patch Antennas Loaded With Complementary Split-Ring Resonators , 2012, IEEE Transactions on Antennas and Propagation.

[8]  T. I. Yuk,et al.  Dual-Band Monopole Antenna With Frequency-Tunable Feature for WiMAX Applications , 2013, IEEE Antennas and Wireless Propagation Letters.

[9]  R. Zaker,et al.  A Novel Switchable Single- and Multifrequency Triple-Slot Antenna for 2.4-GHz Bluetooth, 3.5-GHz WiMax, and 5.8-GHz WLAN , 2010, IEEE Antennas and Wireless Propagation Letters.

[10]  Z. Lei,et al.  A Compact Microstrip Slot Triple-Band Antenna for WLAN/WiMAX Applications , 2010, IEEE Antennas and Wireless Propagation Letters.

[11]  Yazi Cao,et al.  A Compact Multiband Open-Ended Slot Antenna for Mobile Handsets , 2011, IEEE Antennas and Wireless Propagation Letters.

[12]  Kin-Lu Wong,et al.  Multiband Printed Monopole Slot Antenna for WWAN Operation in the Laptop Computer , 2009, IEEE Transactions on Antennas and Propagation.

[13]  T. I. Yuk,et al.  Dual-Band Monopole Antenna with Compact Radiator for 2.4/3.5 GHz WiMAX Applications , 2013 .

[14]  Yi-Cheng Lin,et al.  A Mode-Based Design Method for Dual-Band and Self-Diplexing Antennas Using Double T-Stubs Loaded Aperture , 2012, IEEE Transactions on Antennas and Propagation.

[15]  M. Bod,et al.  Compact UWB Printed Slot Antenna With Extra Bluetooth, GSM, and GPS Bands , 2012, IEEE Antennas and Wireless Propagation Letters.

[16]  Constantine A. Balanis,et al.  Antenna Theory: Analysis and Design , 1982 .

[17]  T. I. Yuk,et al.  Cable Effects on Measuring Small Planar UWB Monopole Antennas , 2012 .