Compact Low-Cost Phased Array of Dielectric Resonator Antenna Using Parasitic Elements and Capacitor Loading

Nikkhah, Mohammad Ranjbar; Rashed-Mohassel, J.; Kishk, Ahmed A.

doi:10.1109/tap.2012.2237535

Cited by 55 publications

(8 citation statements)

References 4 publications

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“…In this section, a wider band DRA (6)(7)(8)(9)(10)(11) is selected and also a Rotman lens with more beam ports (11) and array ports (8) with a scanning range of ±37 • is designed as shown in Fig. 12.…”

Section: Examplementioning

confidence: 99%

“…Rotman-DRA phased arrays are suitable combinations to achieve a wide scanning range of the wideband phased array antenna. Recently, a low cost phased array with DRA elements based on ESPAR (Electronically Steerable Parasitic Array Radiator) theory and inexpensive reactive loads were reported [11,12]. Until nowadays, little attention is given to DRA phased array [13].…”

Section: Introductionmentioning

confidence: 99%

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Rotman Lens Design With Wideband Dra Array

Nikkhah¹,

Hiranandani²,

Kishk³

2020

PIER

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Section: Examplementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rotman Lens Design With Wideband Dra Array

Nikkhah¹,

Hiranandani²,

Kishk³

2020

PIER

Self Cite

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“…Above features enable DRAs to be a perfect fit in the variety of dual‐band, multi‐band, and wideband wireless applications ranging from military drone communication links to satellite communication, Radar applications, health services to mobile, and cellular purposes . Along with these, comprehensive work has been done to enhance the gain of RDRA . The proposed feeding technique excites multiple modes in the DRA to employ wideband characteristics.…”

Section: Introductionmentioning

confidence: 99%

Design and development of wideband RDRA FED with parallel conducting strips chamfered at edges separated by partial matching slab

Vasisht

Chattoraj

2017

Micro & Optical Tech Letters

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In this article, a compact wideband rectangular dielectric antenna fed using parallel standing strips chamfered at the edges with partial dielectric matching slab is proposed for upper C‐band and X‐band applications. Inclusion of the external conducting strip helps in reducing the size of the DRA, facilitates greater ease of fabrication, and helps in shifting the resonant frequency without varying the size of the DRA. Also chamfering the edges of the conducting strips eradicates the discontinuities in the reactance and thus enhances the bandwidth by 10–12%. Two DRAs with dimensions 4.8 mm × 9.6 mm × 10.6 mm were fabricated. The designed antenna has the broad bandwidth ranging from 6.5 to 13.1 GHz. The proposed antenna has the return loss of −45 dB at 7.0 GHz and the impedance bandwidth up to 75% is achieved. The low value of VSWR suggests that the antenna is broadly lossless. Moreover, a comparison with the DRA fed without the partial conducting strip shows that the size of the DRA is reduced considerably around 25%. A parametric study of the variation with external partial conducting strip and internal conducting strip is also carried out. The measured results and the simulated results of the proposed RDRA (Rectangular Dielectric Resonator Antenna) match considerably well with each other. The proposed antenna has an omni‐directional broadband pattern having the gain of 6.0 dBi. © 2017 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:695–698, 2017

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“…Most previous studies about phased arrays were based on far-field focusing antennas (FFAs; Kumar et al, 2013;Ranjbar Nikkhah et al, 2013;Hansen, 2009). Recently, near-field focusing antennas (NFA) are getting more attention and may have great potential applications in noncontact microwave industrial inspection (Bogosanovic & Williamson, 2007), radio frequency identification (RFID; Buffi et al, 2010;Chou et al, 2010), gate access control (Buffi et al, 2009), radiometric temperature sensors (Stephan et al, 2007), etc.…”

Section: Introductionmentioning

confidence: 99%

Radiation Characteristics of Floquet Mode over Two-Dimensional Infinite Near-Field Focusing Antenna with Focus Point in Complex Space

Yang

Ouyang

et al. 2015

Electromagnetics

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In this article, the near field of a two-dimensional infinite near-field focusing antenna with Gaussian taper excitation is determined. By Gabor representation, any slowly varying excitation of array antenna can be expanded to series of Gaussian taper excitation. To achieve the Gaussian taper excitation, the focus point of a twodimensional infinite near-field focusing antenna is placed in complex space. By adopting the Poission sum formula, radiation fields of this type antenna are transferred to terms of Floquet modes. Asymptotic evaluation technique is utilized to calculate the Floquet mode integral in closed form. Results of asymptotic evaluation are compared with those obtained by direct numerical integral, and good agreement is achieved.

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Compact Low-Cost Phased Array of Dielectric Resonator Antenna Using Parasitic Elements and Capacitor Loading

Cited by 55 publications

References 4 publications

Rotman Lens Design With Wideband Dra Array

Rotman Lens Design With Wideband Dra Array

Design and development of wideband RDRA FED with parallel conducting strips chamfered at edges separated by partial matching slab

Radiation Characteristics of Floquet Mode over Two-Dimensional Infinite Near-Field Focusing Antenna with Focus Point in Complex Space

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