Elimination of scan blindness with compact defected ground structures in microstrip phased array

Hou, Dong; Xiao, Shaoqiu; Wang, B.-Z.; Jiang, Li; Wang, J.; Wang, Hong

doi:10.1049/iet-map:20080037

Cited by 74 publications

(48 citation statements)

References 15 publications

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“…By adding an interdigital capacitor, the slot resonates at the same frequency but with a small length of 10.5 mm as shown in Figure 3(b). To reduce the coupling between the array elements, one H-slot has been used [20]. An H-shaped DGS slot is shown in Figure 3(c).…”

Section: Effect Of Interdigital Capacitor Loaded Slots On Bandstop Pementioning

confidence: 99%

“…The space between the adjacent elements in an array is typically 0.5-1.0λ o at the operation frequency, where λ o is the wavelength in free space. Based on the studies in [4,20], the E-plane coupled two microstrip antennas separated by 0.5λ o and constructed on a thick substrate exhibits a stronger mutual coupling compared to the H-plane one. Furthermore, the mutual coupling dominantly results from the pronounced TM surface waves.…”

Section: Simulation and Measurement On Array With And Without Slotsmentioning

confidence: 99%

“…Slots have been employed to improve the performance in multiple applications such as filters, couplers, as well as to reduce the mutual coupling between elements of antenna arrays [13][14][15][16][17][18][19][20][21]. In [20], an H-shaped DGS was investigated and applied to reduce mutual coupling, however, the size of DGS slot was large. The researchers have achieved 12 dB isolation between array elements.…”

Section: Introductionmentioning

confidence: 99%

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Coupling Reduction of Antenna Array Elements Using Small Interdigital Capacitor Loaded Slots

Abdel‐Rahman¹

2012

PIER C

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Abstract-Small size capacitor loaded ground plane slots are used to reduce the mutual coupling between elements in a microstrip antenna array design. The proposed compact slots are inserted between the adjacent E-plane coupled elements in the array to limit the propagation of surface waves between the elements of the array. In order to validate the feasibility of the proposed structure, a two-element array with 0.5λ o distance between centers of two patches is designed, fabricated, and measured. The measured results show a reduction in mutual coupling of 17 dB obtained between elements at the operation frequency.

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Section: Effect Of Interdigital Capacitor Loaded Slots On Bandstop Pementioning

confidence: 99%

Section: Simulation and Measurement On Array With And Without Slotsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Coupling Reduction of Antenna Array Elements Using Small Interdigital Capacitor Loaded Slots

Abdel‐Rahman¹

2012

PIER C

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“…However, these methods significantly increase the surface wave excitation. In the microstrip antenna array, the surface wave also increases the mutual coupling between elements, causing undesirable effects such as scan blindness [1]. Therefore, reducing the mutual coupling has become an important issue in the design of a microstrip antenna array.…”

Section: Introductionmentioning

confidence: 99%

“…Several configurations have been proposed to suppress the mutual coupling. In [1,2], defected ground structures (DGSs) that served as a band-rejected filter were applied to reduce the mutual coupling. Nevertheless, these DGSs also acted as radiating slots that increased the back lobe level.…”

Section: Introductionmentioning

confidence: 99%

Meandered UC-EBG structure for a reduction of the mutual coupling in a patch antenna array

Trinh-Van

Hwang

2012

IEICE Electron. Express

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A meandered uniplanar compact electromagnetic bandgap structure is proposed. Meandered microstrip lines between adjacent cells are used to increase the equivalent inductance. As a result, the dimension of the proposed EBG structure is more compact and its frequency band-gap is wider than that of the conventional uniplanar EBG structure. Two patch arrays with and without an EBG structure were designed, fabricated, and tested to validate the performance of the proposed EBG structure. The measured results demonstrated that a mutual coupling reduction of 4 dB is achievable in a patch array with the proposed EBG structure.

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Defected Ground Structure for Microstrip Antennas

Guha

Biswas²,

Antar

2010

Microstrip and Printed Antennas

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Elimination of scan blindness with compact defected ground structures in microstrip phased array

Cited by 74 publications

References 15 publications

Coupling Reduction of Antenna Array Elements Using Small Interdigital Capacitor Loaded Slots

Coupling Reduction of Antenna Array Elements Using Small Interdigital Capacitor Loaded Slots

Meandered UC-EBG structure for a reduction of the mutual coupling in a patch antenna array

Defected Ground Structure for Microstrip Antennas

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