Investigations of Reduction of Mutual Coupling Between Two Planar Monopoles Using Two Λ/4 Slots

Zuo, Shaoli; Yin, Yingzeng; Wu, Weijun; Zhang, Zhi-Ya; Ma, and Jie

doi:10.2528/pierl10100609

Cited by 37 publications

(28 citation statements)

References 19 publications

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“…Both correlation coefficient and diversity gain are calculated based on S ‐parameters using Eqs. and . CCS is sweeped to find minimization on the correlation coefficient and accepted bit error of 1% theoretic diversity gain which is 10 dB.…”

Section: Resultsmentioning

confidence: 99%

Mimo circular polarization array antenna with dual coupled 90° phased shift for point‐to‐point application

Nayan

Jamlos

2015

Micro & Optical Tech Letters

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by detecting the fringe visibility of the interference patterns. Owing to the use of combination interference structure, experimental results show that the curvature sensor with maximal sensitivity of 10.171 dB m 21 within a measurement range of 0-0.48 m 21 is obtained. The low thermo-optic and thermoexpansion coefficient of the HiBi-PCF makes it is possible for the proposed sensor to overcome the temperature and curvature cross-sensitivity effects. ACKNOWLEDGMENTS

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Section: Resultsmentioning

confidence: 99%

Mimo circular polarization array antenna with dual coupled 90° phased shift for point‐to‐point application

Nayan

Jamlos

2015

Micro & Optical Tech Letters

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“…Correlation coefficient ( ρ ) and diversity gain ( G app ) are the parameters used to characterize MIMO's diversity performance . The correlation coefficient and diversity gain is an important parameter in MIMO antenna design.…”

Section: Resultsmentioning

confidence: 99%

Two‐port circular polarized antenna array for point‐to‐point communication

Nayan

Jamlos

Lago

2015

Micro & Optical Tech Letters

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A two‐port circular polarization (CP) array antenna is presented in this article. The proposed antenna used two‐port which each port is designed with 2 × 2 array structure and both array consist of four circular radiating elements. The used of 90° triple‐coupled phased shift polarizer at both left and right side of circular‐slotted patches with two‐port generate CP aptitude with high gain performance. Moreover, the presence of slots at center of circular elements produce discontinuity effect to assist change in the E‐field and H‐Field rotation of RF current and force the current to flow in CP. Axial ratio of 1.95 dB confirms the CP capability. Nonetheless, the proposed antenna demonstrates a good characteristic for MIMO's isolation with mutual coupling of −55.0 dB (S12) and −45.1 dB (S21), correlation coefficient of 1.2015e‐4 and diversity gain (Gapp) of 9.9999. The proposed antenna also produced gain as high as 13.23 dB for both port. With those capabilities, the antenna designed is suitable for 5.8 GHz point‐to‐point communication. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2328–2332, 2015

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“…A similar approach of connecting circuits between elements has also been used to improve the impedance matching of a phased-array antenna over wide scan angles [17] since mutual coupling may vary the input impedance in different scanning angle. Investigation of reduction of mutual coupling between two planar monopoles using two λ/4 slots was presented in [18] while a novel design of decoupling network for a compact three-element array was proposed in [19].…”

Section: Introductionmentioning

confidence: 99%

A Novel Decoupling Network Using Parallel Coupled Lines for Increasing the Port Isolation of Two Coupled Antennas

Wang¹,

Ou²,

Tam³

et al. 2013

PIER Letters

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Abstract-A compact decoupling network for enhancing the ports isolation of two coupled antennas is proposed in this letter. Parallel coupled lines (PCLs) and transmission lines (TLs) with different electrical lengths are considered to control the magnitude and phase of this decoupling network, respectively. The coupling coefficient of the PCLs is adjusted with various line widths and coupled gaps so that the magnitude of this network will be equal to that of the coupled antennas. And the electrical length of the series TLs can be controlled to make the signals of coupled antennas and decoupling network out of phase. Thus, the mutual coupling between the coupled antennas can be canceled. A prototype is fabricated on a RO4003 print circuit board (PCB) for demonstration. The measured results agree quiet well with the simulation ones. High antenna isolation and good matching are simultaneously achieved at the center frequency, i.e., 925 MHz for global system mobile communications (GSM) which shows the compact decoupling network is suitable for reducing the isolation of size limited multi-antenna systems.

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Investigations of Reduction of Mutual Coupling Between Two Planar Monopoles Using Two Λ/4 Slots

Cited by 37 publications

References 19 publications

Mimo circular polarization array antenna with dual coupled 90° phased shift for point‐to‐point application

Mimo circular polarization array antenna with dual coupled 90° phased shift for point‐to‐point application

Two‐port circular polarized antenna array for point‐to‐point communication

A Novel Decoupling Network Using Parallel Coupled Lines for Increasing the Port Isolation of Two Coupled Antennas

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