Switchable Quad-Band Antennas for Cognitive Radio Base Station Applications

A novel antenna configuration for quad-band operation is presented. The quad-band antenna has a directional radiation pattern in four frequency bands, i.e., B1 (800-900 MHz), B2 (1.7-2.5 GHz), B3 (3.3-3.6 GHz), and B4 (5.1-5.9 GHz), covering all spectrums for existing wireless applications, such as GSM, PCS, WCDMA, WiFi, and WiMax. The operating frequency of the quad-band antenna can be adjusted by the use of a MEMS switch, making it suitable for cognitive radio applications. First a switchable quad-band antenna element is introduced. Then a two-element antenna array is developed to increase the antenna gain for base station applications featuring a gain value of about 9-11 dBi over all four frequency bands.

[1]  J.T. Bernhard,et al.  A pattern reconfigurable microstrip parasitic array , 2004, IEEE Transactions on Antennas and Propagation.

[2]  Kyutae Lim,et al.  Emerging opportunities of RF IC/system for future cognitive radio wireless communications , 2008, 2008 IEEE Radio and Wireless Symposium.

[3]  Aly E. Fathy,et al.  Silicon-based reconfigurable antennas-concepts, analysis, implementation, and feasibility , 2003 .

[4]  Elliott R. Brown,et al.  RF-MEMS switches for reconfigurable integrated circuits , 1998 .

[5]  Ali Mirkamali,et al.  Log Periodic Printed Dipole Array for Wideband Frequency Reconfiguration , 2008 .

[6]  Joseph Mitola.  Cognitive Radio for Flexible Mobile Multimedia Communications , 2001, Mob. Networks Appl..

[7]  Thomas A. Milligan,et al.  Modern Antenna Design: Milligan/Modern Antenna Design , 2005 .

[8]  G.S. Smith,et al.  A reconfigurable aperture antenna based on switched links between electrically small metallic patches , 2004, IEEE Transactions on Antennas and Propagation.

[9]  T. Itoh,et al.  A modified quasi-Yagi planar antenna with wideband characteristics in C-band , 2001, IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229).

[10]  Kyutae Lim,et al.  Equivalent-Circuit Analysis of a Broadband Printed Dipole With Adjusted Integrated Balun and an Array for Base Station Applications , 2009, IEEE Transactions on Antennas and Propagation.

[11]  Hamid Jafarkhani,et al.  Multifunctional reconfigurable MEMS integrated antennas for adaptive MIMO systems , 2004, IEEE Communications Magazine.

[12]  R. Vahldieck,et al.  A reconfigurable slot antenna with switchable polarization , 2003, IEEE Microwave and Wireless Components Letters.

[13]  Craig A. Grimes,et al.  Design of broad-band and dual-band antennas comprised of series-fed printed-strip dipole pairs , 2000 .

[14]  S. P. Stapleton,et al.  A mobile base station phased array antenna , 1992, 1992 IEEE International Conference on Selected Topics in Wireless Communications.

[15]  Anders Rydberg,et al.  Dual wideband printed dipole antenna with integrated balun , 2007 .

[16]  K. Luk,et al.  A dual-feed dual-band L-probe patch antenna , 2005, IEEE Transactions on Antennas and Propagation.

[17]  J. Mitola,et al.  Cognitive radio for flexible mobile multimedia communications , 1999, 1999 IEEE International Workshop on Mobile Multimedia Communications (MoMuC'99) (Cat. No.99EX384).

[18]  Sajal K Palit,et al.  Design and development of wideband and dual-band microstrip antennas , 1999 .

[19]  R. Bansal,et al.  Antenna theory; analysis and design , 1984, Proceedings of the IEEE.

[20]  V. Nair,et al.  Reconfigurable Antenna for Simultaneous Multi-Service Wireless Applications , 2007, 2007 IEEE Radio and Wireless Symposium.

[21]  M.E. Bialkowski,et al.  A Simple Broadband Planar Quasi-Yagi Antenna , 2006, TENCON 2006 - 2006 IEEE Region 10 Conference.

[22]  P. S. Hall,et al.  Antenna Challenges in Cognitive Radio , 2022 .