Design of Double Dipole Antenna With Enhanced Usable Bandwidth for Wideband Phased Array Applications

Eldek, Abdelnasser A.

doi:10.2528/pier06012001

Cited by 81 publications

(45 citation statements)

References 22 publications

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“…Recently, the Double Dipole and Double Rhombus antennas were presented for ultra wideband phased arrays [3,4]. The Double Rhombus provides 103% bandwidth as a single element; however, due to the deterioration of its radiation patterns at higher frequencies, the useable bandwidth is only 84%.…”

Section: Introductionmentioning

confidence: 99%

Wideband 180 Degree Phase Shifter Using Microstrip-CPW-Microstrip Transition

Eldek¹

2008

PIER B

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Abstract-A microstrip 180 • phase shifter obtained by a novel design of Microstrip-to-Coplanar Waveguide (CPW)-to-Microstrip transition is presented. The proposed phase shifter is obtained without changing the layer of the second microstrip line. Via holes are used to transfer the current from the top to the bottom substrate layer and vice versa. The presented phase shifter is operating in a wide bandwidth between 5.5 and 18 GHz, with low insertion loss and reflection coefficients. Because the input and output microstrip lines are on the same layer, the presented phase shifter is suitable for a modified class of feeding networks for phased antenna arrays.

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Section: Introductionmentioning

confidence: 99%

Wideband 180 Degree Phase Shifter Using Microstrip-CPW-Microstrip Transition

Eldek¹

2008

PIER B

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“…All of the above antennas utilize a printed regular dipole as a driver, and have limited bandwidths that may be insufficient for multiple applications. To achieve multiband or wideband characteristics, the regular dipole driver of a Quasi-Yagi antenna can be modified into a variety of shapes, such as double dipoles [13][14][15], multi-branch dipoles [16,17], bowtie dipoles [18,19], or double-rhombus dipoles [20]. However, most of these antennas employ a large ground plane as a reflector, which cannot be well optimized for a radiation pattern like a conventional Yagi-Uda antenna.…”

Section: Introductionmentioning

confidence: 99%

Wideband Double-Dipole Yagi-Uda Antenna Fed by a Microstrip-Slot Coplanar Stripline Transition

Ta¹,

Choo²

2012

PIER B

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Abstract-This paper describes a wideband double-dipole Yagi-Uda antenna fed by a microstrip-slot coplanar stripline transition. The conventional dipole driver of a Yagi-Uda antenna is replaced by two parallel dipoles with different lengths to achieve multi-resonances, and a small, tapered ground plane is used to allow flexibility in the placement of a pair of reflectors for effective reflection of backradiated electromagnetic waves. The measured bandwidth of the antenna was 3.48-8.16 GHz for a −10 dB reflection coefficient, with a flat gain of 7.4 ± 0.4 dBi. A two-element array of these antennas was also constructed, with a center-to-center spacing of 36 mm (0.72λ o at 6 GHz) and a common reflector between the elements. The twoelement array had a measured bandwidth of 3.56-792 GHz, a gain of 8.40-10.43 dBi, a cross-polarization level of < −15 dB, and a mutual coupling of < −16 dB within the impedance-matching bandwidth.

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“…1,2 In order to alter the operating frequency, reconfigurable antennas should be able to change operating frequency, impedance bandwidths, and radiation pattern. 3 Multiple functions need to be performed on a single convergence. 4 A single antenna is used in wireless devices such as cellular telephone, laptops and other wireless devices.…”

Section: Introductionmentioning

confidence: 99%

K15 Nematic Phase Liquid Crystal Material Based Double-Dipole Reconfigurable Antenna

2017

RJC

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In this paper, the study is carried out on frequency reconfigurable antenna for wireless applications. The tuning of the antenna is done by changing its effective electrical length. The proposed antenna structure consists of two dipoles. By connecting and disconnecting the slots, lengths of the coplanar strips of the dipoles can be varied .Therefore antenna can be operated in both multi-band and wideband frequencies. The results plotted after simulations propose that the designed antenna is capable of maintaining its operating frequency over a range of 1.5GHz to 8 GHz. This frequency reconfigurability implemented symmetrically on the two dipoles enhances the overall gain of the antenna from 3dB to 5dB at multiple bands over different combinations mentioned in this paper.

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Design of Double Dipole Antenna With Enhanced Usable Bandwidth for Wideband Phased Array Applications

Cited by 81 publications

References 22 publications

Wideband 180 Degree Phase Shifter Using Microstrip-CPW-Microstrip Transition

Wideband 180 Degree Phase Shifter Using Microstrip-CPW-Microstrip Transition

Wideband Double-Dipole Yagi-Uda Antenna Fed by a Microstrip-Slot Coplanar Stripline Transition

K15 Nematic Phase Liquid Crystal Material Based Double-Dipole Reconfigurable Antenna

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