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Technique of Ground Size Tuning for Isolation Between Monopoles in Compact Wireless Terminals

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5 Author(s)
Lindberg, P. ; TE Connectivity, Järfälla, Sweden ; Morton, L. ; Kaikkonen, A. ; Shi Cheng
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Achieving good isolation between two antennas in a wireless terminal is a challenge, especially if it is small compared to the wavelength. This communication presents a technique useful for two monopoles. It is based on placing the monopoles collinearly and tuning the ground plane size to approximately λ/4. Simulations and measurements are presented to illustrate the technique. Different methods of tuning the ground plane size in small terminals are discussed.

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Antennas and Propagation, IEEE Transactions on  (Volume:60 ,  Issue: 11 )