Closely Spaced Two-Element Folded-Dipole-Driven Quasi-Yagi Array

Ta, Son Xuat; Kang, Sang-gu

doi:10.5515/jkiees.2012.12.4.254

Cited by 10 publications

(4 citation statements)

References 21 publications

(16 reference statements)

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“…However, owing to the large size of the endfire dipole antenna, which results from the dipole length and the interdipole spacing required to satisfy the endfire condition, it is difficult to use a conventional endfire dipole antenna for small wireless communication devices. To overcome this problem, researchers have conducted studies on the miniaturization of dipole arms [13][14][15][16][17][18][19][20][21][22][23][24][25]. The electrical length of a conventional dipole is half the wavelength of the center frequency.…”

Section: Introductionmentioning

confidence: 99%

“…The electrical length of a conventional dipole is half the wavelength of the center frequency. To reduce the electrical length of the dipole, researchers have studied many types of meander dipole [13][14][15][16][17], bent dipole, and folded dipole structures [18][19][20][21][22][23][24][25]. Furthermore, small zeroth-order resonant dipole antennas with composite right-/left-handed metamaterial structures have been proposed [26,27].…”

Section: Introductionmentioning

confidence: 99%

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Reduced-Size Series-Fed Two-Dipole Endfire Antenna

Wang

Park

2022

J Electromagn Eng Sci

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The conventional series-fed endfire dipole antenna has a wide impedance bandwidth and is inexpensive to manufacture. However, it has a disadvantage: its size is large because of the large inter-dipole spacing, which is required to satisfy the endfire condition for good antenna radiation characteristics. Here, we propose a two-dipole endfire antenna with a reduced size. The miniaturized endfire antenna was designed using a meander line to reduce the interdipole spacing while ensuring that the endfire condition was satisfied. Furthermore, the overall width of the antenna was reduced using a bent dipole and a corrugated ground plane. The electrical size of the proposed antenna was only 0.33

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reduced-Size Series-Fed Two-Dipole Endfire Antenna

Wang

Park

2022

J Electromagn Eng Sci

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“…In general, 60-GHz band antennas for wireless communication applications must be wideband, highly directive, low-profile, lightweight, low-cost, and easy to fabricate [1]. Accordingly, a quasi-Yagi antenna [2][3][4][5][6][7] is particularly suitable for 60-GHz applications because, unlike other designs [8][9][10][11][12][13], it satisfies all the above requirements.…”

Section: ⅰ Introductionmentioning

confidence: 99%

High-Efficiency, High-Gain, Broadband Quasi-Yagi Antenna and Its Array for 60-GHz Wireless Communications

Ta¹,

Kang²,

Han³

2013

Journal of electromagnetic engineering and science

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This paper introduces a high-efficiency, high-gain, broadband quasi-Yagi antenna, and its four-element array for use in 60-GHz wireless communications. The antenna was fed by a microstrip-to-slotline transition consisting of a curved microstripline and a circular slot to allow broadband characteristics. A corrugated ground plane was employed as a reflector to improve the gains in the low-frequency region of the operation bandwidth, and consequently, to reduce variation. The single antenna yielded an impedance bandwidth of 49 to 69 GHz for |S 11 |<-10 dB and a gain of >12.0 dBi while the array exhibited a bandwidth of 52 to 68 GHz and a gain greater than 15.0 dBi. Both proposed designs had small gain variations (±0.5 dBi) and high radiation efficiency (>95%) in the 60-GHz bands. The features of the proposed antenna were validated by designing, fabricating, and testing a scaled-up configuration of the single antenna at the 15-GHz band. The measurements resulted in an impedance bandwidth of 13.0 to 17.5 GHz for |S 11 |<-10 dB, a gain of 10.1 to 13.2 dBi, and radiation efficiency in excess of 88% within this bandwidth. Additionally, the 15-GHz antenna yielded quite symmetric radiation profiles in both E-and H-planes, with a high front-to-back ratio.

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“…These antennas can be fed by several types of feedlines, including microstrip lines (MS) [1]～ [6], coplanar waveguides (CPW) [7], [8], coplanar striplines (CPS) [9], [10], or slotlines [11]. Quasi-Yagi antennas utilize a regular dipole as the driver, which means that the bandwidths are approximately 50 % or less and may not be sufficient for some applications.…”

Section: ⅰ Introductionmentioning

confidence: 99%

Wideband Double Dipole Quasi-Yagi Antenna Using a Microstrip-to-Slotline Transition Feed

Ta¹

2013

Journal of electromagnetic engineering and science

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This paper describes a wideband double dipole quasi-Yagi antenna fed by a microstrip-to-slotline transition. The transition feed consists of a microstrip radial stub and a slot radial stub, each with the same angle of 90° but with different radii, to achieve wideband impedance matching. Double dipoles with different lengths are utilized as primary radiation elements to enhance bandwidth and achieve stable radiation patterns. The proposed antenna has a measured bandwidth of 3.34～8.72 GHz for a -10 dB reflection coefficient and a flat gain of 6.9±0.6 dBi across the bandwidth.

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Closely Spaced Two-Element Folded-Dipole-Driven Quasi-Yagi Array

Cited by 10 publications

References 21 publications

Reduced-Size Series-Fed Two-Dipole Endfire Antenna

Reduced-Size Series-Fed Two-Dipole Endfire Antenna

High-Efficiency, High-Gain, Broadband Quasi-Yagi Antenna and Its Array for 60-GHz Wireless Communications

Wideband Double Dipole Quasi-Yagi Antenna Using a Microstrip-to-Slotline Transition Feed

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