Abstract
ABSTRACTIn this letter, we develop a frequency tunable multiple‐input multiple‐output antenna for handhelds to achieve both the wideband tunability at the frequency ranges of 704–960 MHz and low correlation properties over the tuning frequencies. The proposed antenna covers various long‐term evolution (LTE) service bands: Band 17 (704–746 MHz), Band 13 (746–787 MHz), Band 5 (824–894 MHz), and Band 8 (880–960 MHz). The proposed LTE antennas are based on a switch‐loaded antenna structure, with a resonance frequency that can be controlled by a logic circuit. The tuning technique for the LTE antenna uses a SP4T RF switch to match the impedances to realize the bands of interest. The proposed main antenna consists of an inverted‐F antenna (IFA), the LTE subantenna is loop antenna structure. The use of two different antenna types of IFA and loop antenna achieves high isolation. We show that the proposed antenna has envelop correlation coefficient value as low as 0.5 over the designed frequency tuning ranges. The proposed antenna was fabricated and tested for experimental verification. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1092–1096, 2015
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
