Novel Dual-Band Design of Planar Dipole Array for 4G LTE/WiMAX Access Points

Recently, LTE (Long-Term Evolution) and WiMAX (Worldwide Interoperability for Microwave Access) systems for the Fourth-Generation (4G)mobile communication has attracted high attention for broadband access in Wireless Metropolitan Area Network (WMAN) environment. For the LTE/ WiMAX base stations or access points, the high-gain array antenna with omnidirectional radiation in the azimuthal plane is usually required for long-distance communication. The related array designs had been presented by using two 1×2 dipole arrays, collinear array antenna with three in-phase half-wavelength radiating elements, and four-element collinear array antenna.