MIMO loop antennas and their isolations in WLAN card applications
Journal
IEEE Antennas and Propagation Society, AP-S International Symposium
Date Issued
2009
Author(s)
Abstract
A design of three loop antennas for MIMO [1] applications on a WLAN card is investigated. These antennas are printed on a FR4 substrate and oriented in a way to exhibit distinguishable propagation characteristics. The limited space between antenna locations causes strong mutual couplings that may complicate MIMO's signal process. Thus, potential approaches [2,3] to reduce the mutual coupling are examined by considering slots cut from the ground plane and placing resistive cards [4] between the antennas, whose effects on the antenna performances and data communications are investigated and presented in this paper. Realistic system implementation shows that this design simultaneously provides distinguishable scattering characteristics and effective isolations, and improves overall communication qualities.
Type
conference paper