Reduced mutual coupling in a compact antenna array using periodic structures

Schühler, Mario; Wansch, Rainer; Hein, Matthias

doi:10.1109/lapc.2008.4516874

Cited by 6 publications

(5 citation statements)

References 6 publications

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“…By comparison with the results reported in recent literature [17][18][19][20][21][22][23][24], it is concluded that the three most important merits of the DGS decoupler are the small occupied PCB area, the width of the stopband (bandgap), and the resulting active impedance bandwidth. A secondary advantage is the adjustable depth of resonance, which is controlled by balancing distributed inductance and capacitance.…”

Section: Measurement Results and Discussion The Three 2element Arraymentioning

confidence: 61%

“…An example circuit decoupler is the transmission line network presented in [18]. Antenna-level decoupling can be done 1 .07λ × 0.30λ 0.3210 [18] 1 .43λ × 1.34λ 1.9162 [19] 0 .33λ × 0.07λ 0.0231 [20] 0 .25λ × 0.14λ 0.0350 [21] 0 .18λ × 0.12λ 0.0216 [22] 0 .56λ × 0.11λ 0.0616 [23] 0 .60λ × 0.20λ 0.1200 This work 0.14λ × 0.06λ 0.0084 in three ways: modified ground plane, neutralization line, and parasitic scatterer [24]. All three techniques require that the structure of the array be modified.…”

Section: Measurement Results and Discussion The Three 2element Arraymentioning

confidence: 99%

“…The authors in [22] also studied the application of electromagnetic band-gap (EBG) structures. Two horizontal dipole antennas were mounted on a substrate and spaced at d = 0.17λ.…”

Section: Mutual Coupling Reduction In Compact Arraysmentioning

confidence: 99%

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Compact Printed Arrays with Embedded Coupling Mitigation for Energy-Efficient Wireless Sensor Networking

Kakoyiannis

Constantinou

2010

International Journal of Antennas and Propagation

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Wireless sensors emerged as narrowband, resource-constrained devices to provide monitoring services over a wide life span. Future applications of sensor networks are multimedia-driven and include sensor mobility. Thus, sensors must combine small size, large bandwidth, and diversity capabilities. Compact arrays, offering transmit/receive diversity, suffer from strong mutual coupling (MC), which causes lower antenna efficiency, loss of bandwidth, and signal correlation. An efficient technique to reduce coupling in compact arrays is described herein: a defect was inserted in the ground plane (GNDP) area between each pair of elements. The defect disturbed the GNDP currents and offered multidecibel coupling suppression, bandwidth recovery, and reduction of in-band correlation. Minimal pattern distortion was estimated. Computational results were supported by measurements. The bandwidth of unloaded arrays degraded gracefully from 38% to 28% with decreasing interelement distance (0.25 to 0.10). Defect-loaded arrays exhibited active impedance bandwidths 37–45%, respectively. Measured coupling was reduced by 15–20 dB.

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Section: Measurement Results and Discussion The Three 2element Arraymentioning

confidence: 61%

Section: Measurement Results and Discussion The Three 2element Arraymentioning

confidence: 99%

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Compact Printed Arrays with Embedded Coupling Mitigation for Energy-Efficient Wireless Sensor Networking

Kakoyiannis

Constantinou

2010

International Journal of Antennas and Propagation

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“…However, when several antennas come out in close proximity, they suffered from strong mutual coupling, which results in lower efficiency of the antenna and loss of bandwidth that further degrades the performance of either the diversity gain or the spatial multiplexing schemes. [5][6][7][8][9][10][11] Both the performances of the linear and the circular polarization (CP) antenna could be degraded by the mutual coupling. For example, in the GPS anti-jam systems, the antenna array is applied to counteract the spatial jamming.…”

Section: Introductionmentioning

confidence: 99%

Mutual coupling efficient analysis of rectangle microstrip circular polarization antenna array

Xing

Sandikie

et al. 2015

Journal of Electromagnetic Waves and Applications

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Mutual coupling performance of the microstrip circular polarization (CP) antenna array is analyzed in this study. Compared with the single antenna application, in the antenna array, the S11, the radiation pattern, and the axial ratio will all be changed due to the mutual coupling and the axial ratio will be more sensitive. To further prove the concept and performance effect, a model of the microstrip antenna array is developed and analyzed in theory. The simulation and measurement results demonstrate that the relative position of antennas in the array exert different effect on the performances of the antenna. Thus, the study provides some very useful results of the CP antenna array.

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“…Οι εγκοπές κατέλαβαν επιφάνεια ίση με 0.25λ × 0.14λ. Μονήρης εγκοπή είχε Καταπίεση Αμοιβαίας Σύζευξης σε Συμπαγείς Στοιχειοκεραίες Οι Schühler et al[209] μελέτησαν επίσης την εφαρμογή των δομών EBG. Δύο οριζόντια δίπολα τοποθετήθηκαν πάνω σε υπόστρωμα με απόσταση μεταξύ τους d = 0.17λ.…”

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Τεχνολογίες Ενεργειακά Αποδοτικών Ευρυζωνικών Και Συμπαγών Κεραιοσυστημάτων Υψηλών Συχνοτήτων Για Κινητά Τερματικά Και Προηγμένα Ασύρματα Δίκτυα Επικοινωνιών

Kakoyiannis¹,

Κακόγιαννης²

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Thesis Title: High-Frequency Technologies of Energy-Efficient, Wideband and Compact Antenna Systems for Portable Terminals and Advanced Wireless Communication NetworksThe explosive growth of wireless communications has significantly increased the need for compact antennas, which tend to behave as narrowband, inefficient and low-gain radiators. Reliable techniques for the design, fabrication and measurement of small antennas are highly desirable. The significance of antennas to the proper function of advanced mobile terminals cannot be overemphasized. Rapid advances in mobile and personal communication networks have caused antenna design targeting cellphones, portable computers, PDAs, smartphones and RFIDs to flourish. Contrary to the above, industrial and academic research has displayed little interest in the antenna system of a special category of portable terminals: nodes comprising Wireless Sensor Networks (WSNs). Wireless sensors are autonomous, tiny devices built around specifications that opt for the longest possible network lifetime. A vital prerequisite to the proper function of wireless microsensors is the availability of miniature, energy-efficient antenna systems covering the application band. The design, development, and characterization of such antennas are the major topics addressed in the Thesis. The antennas were built in printed circuit technology, since PCBs are a realistic and viable solution to the fabrication of wireless sensors.A study of Euclidean and Fractal printed monopoles during the initial stages of the Thesis showed that their achievable miniaturization limits are constrained by a shortcircuiting phenomenon. A new class of antennas that alleviate the problem are Analytical Geometry Antennas. The sinusoidal antenna was initially developed, which is inherently small, wideband and efficient. Particular attention was given to the effect of the ground plane (GNDP) which, contrary to what is generally understood, is an integral part of the overall radiator. A flexible figure-of-merit (FoM) was suggested, to merge the fundamental properties of small antennas into a single quantity. The genre of Analytical Antennas was augmented by the addition of Chebyshev antennas, which combine inductive and capacitive (top-hat) loading and demonstrate that the choice of analytical function can produce gains in antenna response. The study of Analytical Antennas was completed with the equally innovative, multi-band, generalized-sinusoidal Chirp antenna. The Chirp radiator introduces the concept of Analytical Self-Similarity. v 3 o soundtrack th ditri sunèjesn oi korufÐoi mousikoÐ dhmiourgoÐD kurÐw pì ton q¸ro tou prog rock/metalD pou prtÐjenti ed¸lfhtikX Anathema, Blind Guardian, Dire Straits, Dream Theater,

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Reduced mutual coupling in a compact antenna array using periodic structures

Cited by 6 publications

References 6 publications

Compact Printed Arrays with Embedded Coupling Mitigation for Energy-Efficient Wireless Sensor Networking

Compact Printed Arrays with Embedded Coupling Mitigation for Energy-Efficient Wireless Sensor Networking

Mutual coupling efficient analysis of rectangle microstrip circular polarization antenna array

Τεχνολογίες Ενεργειακά Αποδοτικών Ευρυζωνικών Και Συμπαγών Κεραιοσυστημάτων Υψηλών Συχνοτήτων Για Κινητά Τερματικά Και Προηγμένα Ασύρματα Δίκτυα Επικοινωνιών

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