Octagonal Ring Antenna for a Compact Dual-Polarized Aperture Array

Zhang, Yongwei; Brown, Anthony K.

doi:10.1109/tap.2011.2163742

Cited by 56 publications

(31 citation statements)

References 8 publications

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“…Thus, the present design is low cost, low profile, light weight, and easy to be fabricated. Although the shape of the antenna element is similar to that has been published by Yongwei Zhang in Octorber 2011 [29], the operating bandwidth, feed structure, and array structure are quite different. In order to remove any concern of plagiarism, it is necessary to point out that the antenna array presented here was independently developed by us, the research work on this antenna includes the analysis, design, and measurement was finished in December 2010.…”

Section: Introductionmentioning

confidence: 71%

A Novel Wideband Antenna Array With Tightly Coupled Octagonal Ring Elements

Chen¹,

Yang²,

Nie³

2012

PIER

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Abstract-A novel phased array antenna with wide bandwidth and wide scan angle is presented. The radiating aperture of the phased array consists of periodically and closely spaced octagonal ring elements. Tight capacitive coupling between adjacent elements is realized by interdigitating the end portions of the ring elements. To improve the impedance matching of the individual antenna elements over wide frequency band, a novel impedance matching layer consists of periodic octagonal ring element is subtly designed and placed over the radiating aperture. Both of the radiating elements and impedance matching layer are printed on a flexible membrane substrate with a thickness of 0.04 mm. Measured results of a 16-element linear array demonstrate that good impedance matching over a 4.4 : 1 bandwidth can be obtained for beam scan angles within ±45 • from broadside. As compared to conventional wideband phased array such as tapered slot antenna array, the proposed phased array has the features such as low cost, low profile, light weight, and ease of fabrication.

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Section: Introductionmentioning

confidence: 71%

A Novel Wideband Antenna Array With Tightly Coupled Octagonal Ring Elements

Chen¹,

Yang²,

Nie³

2012

PIER

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“…system [5]. Besides the Vivaldi a new planar antenna concept is being considered, the Octagonal Ring Array (ORA) [6]. The ORA concept has the potential of an improved polarization performance and lower high volume production cost.…”

Section: A Antenna Designmentioning

confidence: 99%

Mid frequency aperture array technology developments for the SKA

Vaate

Benthem

Witvers

et al. 2014

2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)

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“…Since the array elements form a balanced structure a new stripline structure introduced in [8] is been used to feed the array at each element as depicted in Figures 3. The feeding line is inserted prior to the end edge of a pair of ring radiators at the top part of the feeding line while the inner conductor of the stripline is soldered to the other pair ring (centre ring).…”

Section: Antenna Designmentioning

confidence: 99%

“…However, these elements are costly and also difficult to fabricate. On the other hand, ORA [8]consists of closely spaced octagonal ring elements, exhibits a ratio of 3.3 : 1 with VSWR< 2 bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Ultra-wideband tightly coupled fractal octagonal phased array antenna

Farhat

Adami

Zhang

et al. 2013

2013 International Conference on Electromagnetics in Advanced Applications (ICEAA)

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-This paper presents a low profile ultrawideband tightly coupled phased array antenna with integrated feedlines. The aperture array consists of planar element pairs with fractal geometry. In each element these pairs are set orthogonal to each other for dual polarisation. The design is an array of closely capacitively coupled pairs of fractal octagonal rings. The adjustment of the capacitive load at the tip end of the elements and the strong mutual coupling between the elements, enables a wideband conformal performance. Adding a ground plane below the array partly compensates for the frequency variation of the array impedance, providing further enhancement in the array bandwidth. Additional improvement is achieved by placing another layer of conductive elements at a defined distance above the radiating elements. A Genetic Algorithm was scripted in MATLAB and combined with the HFSS simulator, providing an easy optimisation tool across the operational bandwidth for the array unit cell design parameters. The proposed antenna shows a wide-scanning ability with a low cross-polarisation level over a wide bandwidth.

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Octagonal Ring Antenna for a Compact Dual-Polarized Aperture Array

Cited by 56 publications

References 8 publications

A Novel Wideband Antenna Array With Tightly Coupled Octagonal Ring Elements

A Novel Wideband Antenna Array With Tightly Coupled Octagonal Ring Elements

Mid frequency aperture array technology developments for the SKA

Ultra-wideband tightly coupled fractal octagonal phased array antenna

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