A Wideband Internal Plate Loaded Planar Monopole Antenna for Mobile Handset

A novel low profile wideband internal planar monopole (PM) antenna is proposed. It consists of a rectangular planar monopole, 10 × 20 mm2, loaded with a pair of parallel small thin plates, 8 × 12 mm2, placed on the two radiating sides of the PM antenna. The proposed antenna has two ground planes. A small horizontal ground, 9 × 20 mm2, that holds the PM antenna (making the overall volume of the antenna element 9 × 20 × 23 mm3) and the vertical ground, 50 × 80 mm2 that can be treated as the ground plane of the circuit board of a mobile phone. A prototype of the proposed antenna has been fabricated and tested. Its operating bandwidth with S 11 lower than −10 dB is 1.66–7.35 GHz, which covers the digital communication system (DCS 1.72–1.88 GHz), personal communication system (PCS 1.85–1.99 GHz), universal mobile telecommunication system (UMTS 1.92–2.17 GHz), wireless local area network (WLAN), which usually operate in the 2.4 GHz (2.4–2.484 GHz) and 5.2/5.8 GHz (5.15–5.35 GHz/5.725–5.825 GHz) and worldwide interoperability for microwave access (WiMAX 2.305–2.360 GHz/2.5–2.69 GHz) bands. The radiation pattern of the antenna is omnidirectional with Uniformity value of more than 80%. The antenna has a flat transfer function and group delay over the required bands.

[1]  C. Phongcharoenpanich,et al.  Analysis of circular array of monopole on the ground plane radiating linearly polarized conical beam for wireless LAN applications , 2000, 2000 5th International Symposium on Antennas, Propagation, and EM Theory. ISAPE 2000 (IEEE Cat. No.00EX417).

[2]  Shun-Yun Lin.  Multiband folded planar monopole antenna for mobile handset , 2004, IEEE Transactions on Antennas and Propagation.

[3]  Shyh-Kang Jeng,et al.  Planar miniature tapered-slot-fed annular slot antennas for ultrawide-band radios , 2005, IEEE Transactions on Antennas and Propagation.

[4]  Gerhard Tröster,et al.  Characterization of small planar antennas for UWB mobile terminals , 2005, Wirel. Commun. Mob. Comput..

[5]  Y.-T. Liu.  Wideband stubby monopole antenna for mobile phone , 2006 .

[6]  Zhengwei Du,et al.  A Compact Multiband Planar Antenna for Mobile Handsets , 2006, IEEE Antennas and Wireless Propagation Letters.

[7]  J. Legarda,et al.  Design of UWB folded-plate monopole antennas based on TLM , 2006, IEEE Transactions on Antennas and Propagation.

[8]  Kama Huang,et al.  Design and Implement of a CPW-Fed Meander Monopole Antenna with V-Shape Notched Ground for Wlan , 2007 .

[9]  D. Valderas,et al.  Synthesis of TLM-Based UWB Planar Monopole Impedance Bandwidth , 2007, IEEE Transactions on Antennas and Propagation.

[10]  Y.-t. Liu.  Stubby monopole antenna for UMTS/WLAN dual-mode mobile phone , 2007 .

[11]  Kin-Lu Wong,et al.  Uni-Planar Dual-Band Monopole Antenna for 2.4/5 GHz WLAN Operation in the Laptop Computer , 2007, IEEE Transactions on Antennas and Propagation.

[12]  S. Bendhia,et al.  Characterisation of electromagnetic susceptibility of integrated circuits using near-field scan , 2007 .

[13]  W.-C. Liu,et al.  CPW-FED Notched Monopole Antenna for Umts/imt-2000/WLAN Applications , 2007 .

[14]  Seong-Ook Park,et al.  A New Compact Hexaband Internal Antenna of the Planar Inverted F-Type for Mobile Handsets , 2007, IEEE Antennas and Wireless Propagation Letters.

[15]  A. Attari,et al.  INTERACTION OF DUAL BAND HELICAL AND PIFA HANDSET ANTENNAS WITH HUMAN HEAD AND HAND , 2007 .

[16]  Seong‐Ook Park,et al.  A Compact Loop Type Antenna for Bluetooth, S-DMB, Wibro, WiMax, and WLAN Applications , 2007, IEEE Antennas and Wireless Propagation Letters.

[17]  Yong-Chang Jiao,et al.  COMPACT RING MONOPOLE ANTENNA WITH DOUBLE MEANDER LINES FOR 2.4/5 GHZ DUAL-BAND OPERATION , 2007 .

[18]  Jwo-Shiun Sun,et al.  Compact Printed Slot Antennas for Wireless Dual- and Multi-Band Operations , 2008 .

[19]  Cheng-Nan Chiu,et al.  A Compact Disc-Slit Monopole Antenna for Mobile Devices , 2008, IEEE Antennas and Wireless Propagation Letters.

[20]  Monai Krairiksh,et al.  A rhombic patch monopole antenna with modified minkowski fractal geometry for umts, wlan, and mobile wimax application , 2009 .