A Compact Dual-Band Linearly Polarized Shared-Aperture Base Station Antenna

A dual-band linear polarization shared-aperture base station antenna with a compact size is presented, which consists of a lower-band linearly-polarized antenna working in 824-960MHz and an upper-band dual-linearly-polarized antenna working in 1710-2690MHz. The shared-aperture antenna is arranged in a three-dimensional stack distribution, where the low-frequency antenna adopts the microstrip patch and the high-frequency one adopts the planer printed dipole. The simulated results show that the proposed shared-aperture antenna covers the frequency bands from 824 to 960MHz and from 1710 to 2690MHz with a good isolation between its ports(20dB). The simulated gain is above 5.77dBi and 5.87dBi for lower and upper band, respectively.