Dual‐band frequency‐reconfigurable MIMO PIFA for LTE applications in mobile hand‐held devices. Issue 5 (17th February 2020)

• Record Type: Journal Article
• Authors: Shruthi, G.; Yogesh Kumar, Choukiker
• Is Part Of: IET microwaves, antennas & propagation. Volume 14:Issue 5(2020)
• Page Start: 419
• Page End: 427
• Publication Date: 2020-02-17
• Subjects: antenna feeds -- antenna radiation patterns -- planar inverted‐F antennas -- broadband antennas -- Long Term Evolution -- MIMO communication -- multifrequency antennas -- microwave antenna arrays -- microstrip antenna arrays; PIFA performance -- LTE applications -- mobile hand‐held devices -- planar inverted‐F antenna -- mobile hand‐held device applications -- MIMO antenna -- symmetrical PIFA -- centre‐to‐centre distance -- dual‐band tunability -- independent frequency tunability -- frequency bands -- antenna structure -- envelope correlation coefficient -- dual‐band frequency‐reconfigurable MIMO PIFA -- channel capacity -- diversity gain -- multiplexing efficiency -- mean effective gain -- specific absorption ratio -- frequency 1.65 GHz to 2.2 GHz -- capacitance 4.15 pF -- voltage 0.0 V -- capacitance 0.72 pF -- voltage 15.0 V -- distance 43.0 mm -- bandwidth 0.8 GHz to 0.98 GHz; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2019.0878
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : In this study, dual‐port dual‐frequency tuneable MIMO planar inverted‐F antenna (PIFA) is presented for mobile hand‐held device applications. The proposed MIMO antenna consists of two symmetrical PIFAs with the centre‐to‐centre distance of 43.0 mm (0.1906 λ 0 ). The dual‐band tunability is achieved by changing the capacitance ( V 1 and V 2 ) of 4.15 pF (0 V)–0.72 pF (15 V). The impedance bandwidth of − 6 dB is realised from 0.8 to 0.98 GHz for the lower band and 1.65 to 2.2 GHz for the higher band. The proposed antenna provides the independent frequency tunability without disturbing the frequency bands. It shows the good isolation for both the tuneable bands > 20 dB without using any coupling element between the antenna structure. It has a peak realised gain of 3.44 dBi, good efficiency of > 75 % and envelope correlation coefficient of 0.007. In addition, the proposed PIFA performance is analysed with total active reflection coefficient, channel capacity, diversity gain, multiplexing efficiency, mean effective gain and specific absorption ratio for the tuneable range of frequencies. The good agreement is obtained between simulation and experimental performances to validate the antenna parameters.