Abstract
In some applications, it may be desirable and/or necessary to closely locate (spacing <<λ) multiple electrically small antennas. In an effort to reduce mutual coupling, small antennas are often oriented such that their isolated far-electric and magnetic fields are orthogonal. In this paper, we examine the mutual coupling between co-located and closely spaced orthogonal small dipole antennas. We illustrate that if small regions of the dipoles are not orthogonal, particularly near their feedpoints, the mutual coupling can be very high and under appropriate load conditions can approach 0 dB. We illustrate how the mutual coupling between the dipoles varies as a function of the dipoles' electrical size and load impedance. Finally, we show that making the electrically small dipoles self-resonant significantly reduces or eliminates the mutual coupling between them.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.