A bidirectional planar monopole antenna array for WiFi/Bluetooth and LTE mobile applications

This paper presents a novel bidirectional planar monopole antenna array, with its feeding network, to apply for WiFi/Bluetooth and LTE mobile standards. The planar array is comprised of monopole antenna elements that utilise Archimedean spiral slots, inspired as resonance paths, in order to generate multi-band performance. Contrary to conventional structures, the feeding network is composed of three Wilkinson power dividers, for the purpose of providing synchronised output signals over the required frequency range, miniaturising dissipation losses and decreasing mutual coupling. Simulation and measurement results are presented for a single antenna element, an initial Wilkinson power divider and a four-element planar array, which reside on FR4 substrates. Successfully comparison between simulated and measured results verifies that the single antenna element achieves a 10 dB reflection coefficient from 2.2GHz to 2.9GHz, and the planar antenna array illustrates a 10 dB return loss bandwidth from 2.4GHz to 3.1GHz, which could cover WiFi/Bluetooth (2.45GHz) and LTE (2.6GHz) mobile applications. The proposed planar monopole antenna array also obtains large gain, high efficiency, narrow beam, low side lobe level and highly symmetric bidirectional radiation pattern in both E- and H-plane.

[1]  Tayeb A. Denidni,et al.  Dual-polarised dielectric-loaded monopole antenna for wideband communication applications , 2012 .

[2]  Aixin Chen,et al.  A $Ka$ -Band High-Gain Circularly Polarized Microstrip Antenna Array , 2010, IEEE Antennas and Wireless Propagation Letters.

[3]  K. Chawanonphithak,et al.  An Ultra-Wideband Bidirectional Antenna with Modified Circular Disc Monopole Excited Elliptical Ring , 2007, 2007 IEEE Radio and Wireless Symposium.

[4]  T. Hori,et al.  Bidirectional rod antenna composed of narrow patches , 1994, Proceedings of IEEE Antennas and Propagation Society International Symposium and URSI National Radio Science Meeting.

[5]  Xianming Qing,et al.  A Planar Dualband Antenna Array , 2011, IEEE Transactions on Antennas and Propagation.

[6]  Tughrul Arslan,et al.  A WiFi/4G compact feeding network for an 8-element circular antenna array , 2011, 2011 Loughborough Antennas & Propagation Conference.

[7]  G. Dassano,et al.  Low profile bidirectional antenna for Linear Wireless Sensors Networks , 2009, 2009 3rd European Conference on Antennas and Propagation.

[8]  Monai Krairiksh,et al.  A Simple and Cost-Effective Bidirectional Antenna Using a Probe Excited Circular Ring , 2001 .

[9]  K. See,et al.  Integration of Dual-Band Monopole and Microstrip Grid Array for Single-Chip Tri-Band Application , 2013, IEEE Transactions on Antennas and Propagation.

[10]  Anh-Vu Pham,et al.  A Bidirectional Microstrip X-Band Antenna Array on Liquid Crystal Polymer for Beamforming Applications , 2013, IEEE Transactions on Antennas and Propagation.

[11]  C. Phongcharoenpanich,et al.  A wideband bidirectional antenna using truncated circular sector fed by rectangular monopole , 2009, 2009 6th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology.

[12]  Monai Krairiksh,et al.  An array of a probe excited circular ring radiating bidirectional pattern , 2002, IEEE Antennas and Propagation Society International Symposium (IEEE Cat. No.02CH37313).

[13]  H. Arai,et al.  Bi-directional notch antenna with parasitic elements for tunnel booster system , 1997, IEEE Antennas and Propagation Society International Symposium 1997. Digest.

[14]  M. J. Ammann,et al.  Bidirectional circularly polarized microstrip antenna for GPS applications , 2010, 2010 Loughborough Antennas & Propagation Conference.

[15]  H. Hassani,et al.  Small UWB Planar Monopole Antenna With Added GPS/GSM/WLAN Bands , 2012, IEEE Transactions on Antennas and Propagation.

[16]  Jong-Gwan Yook,et al.  Integration of Antenna and Feeding Network for Compact UWB Transceiver Package , 2011, IEEE Transactions on Components, Packaging and Manufacturing Technology.