Abstract
The thesis is to discover the way to design LTE high gain array antenna intetgrated with WLAN MIMO antenna for Femtocell Applications. In chapter two, we use HFSS to simulate 2 x 2 array antenna at 204 x 204 x 25 mm3 plastic Femto AP(access point). We make a ground inside the box and let the feeding point at center antenna. The air is the medium for array antenna to radiate. Every patch extends to ground by 5 mm width. Afterward we can analyze the result from computer simulation test and actual object test and get a nice radiation efficiency. In chapter three, we use the ground of array antenna as the some ground of Coupling structure WLAN MIMO antenna. And then make the Coupling structure WLAN MIMO antenna integrated with antenna array. There will be four Coupling structure WLAN MIMO antennas at every middle side of Femtocell to add radiation area. In chapter four, we remove all Coupling structure WLAN MIMO antennas, and design a kind of PIFA WLAN MIMO antenna which also has the ground of antenna array. Let four PIFA WLAN MIMO antennas set at the places where Coupling structure WLAN MIMO antennas were set similarly. The purpose is not only promote the radiation area but also the isolation(Between PIFA WLAN MIMO antennas and array antenna). Finally, PIFA WLAN MIMO antennas have much better isolation(more than 5 dB) and average radiation efficiency than Coupling structure WLAN MIMO antennas for the Femtocell. The PIFA WLAN MIMO antenna is also easily to controlled frequency band. Thus the PIFA WLAN MIMO antenna is fit with antenna array for LTE Femtocell application.
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