Small Printed Combined Electric-Magnetic Type Ultrawideband Antenna With Directive Radiation Characteristics

Kwon, Do-Hoon; Balzovsky, E. V.; Buyanov, Yu. I.; Koshelev, V. I.

doi:10.1109/tap.2007.913153

Cited by 23 publications

(7 citation statements)

References 9 publications

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“…Therefore,p 0 2ẑ is equal to rotation ofp by 0 =2 in the + direction independent of the definition ofp. The condition (15) agrees with the observations made for three example polarizations shown in Fig. 2.…”

Section: Gain Enhancementsupporting

confidence: 90%

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Radiation $Q$ and Gain of TM and TE Sources in Phase-Delayed Rotated Configurations

Kwon

2008

IEEE Trans. Antennas Propagat.

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The radiation quality factor and gain of antennas are compared for two source configurations between TM/TE-only spherical mode radiation and combined TM + TE mode radiation. It is shown that the change to the combined TM+TE mode radiation can reduce the quality factor by up to 50% and increase the gain by maximum 3 dB simultaneously. The condition for maximum gain increase provides a guideline for antenna designs for successfully achieving wide bandwidths and small sizes at the same time.Index Terms-Antenna gain, antenna miniaturization, directive antennas, radiation quality factor.

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Section: Gain Enhancementsupporting

confidence: 90%

“…The latter is known as the normal gain [2] for omnidirectional antennas, and it represents the practical upper limit on the gain without compromising bandwidth. Small printed ultrawideband antennas designed according to the above principle were presented in [15].…”

Section: Introductionmentioning

confidence: 99%

Radiation $Q$ and Gain of TM and TE Sources in Phase-Delayed Rotated Configurations

Kwon

2008

IEEE Trans. Antennas Propagat.

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“…[5] For ultrawideband radiation, it is important to combine proper excitation of both electric and magnetic fields [Schantz, 2005, p. 247;Kwon et al, 2008;Farr et al, 1999]. The goal of this research is to develop a novel antenna based on a combination of a patch and a loop.…”

Section: Antenna Structurementioning

confidence: 99%

Circuital characteristics and radiation properties of an UWB electric‐magnetic planar antenna for Ku‐band applications

2013

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[1] A planar, directive antenna with large fractional bandwidth is introduced in this paper. A detailed discussion on the proposed antenna topology and its architecture is reported. The proposed element is a combination of a patch and a loop radiator. A proper combination of the electric field radiator (patch) with a magnetic field radiator (loop around the patch) is exploited for expanding the operational bandwidth. A parametric study is presented to investigate the effect of the antenna geometrical parameters on its performance. A general and computationally efficient procedure for extracting the antenna equivalent circuit is described and used to achieve a meaningful circuit theory-based insight into the characteristics of the radiating structure. The theoretical and experimental results are compared, and it is demonstrated that the element features over 100% fractional bandwidth, good impedance matching, and unidirectional and stable radiation patterns.Citation: Haider, N., D. Caratelli, and A. G. Yarovoy (2013), Circuital characteristics and radiation properties of an UWB electric-magnetic planar antenna for Ku-band applications, Radio Sci., 48, 13-22,

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“…However, the maximum gain of the antenna is a strong function of the phase difference, and a gain enhancement of up to 3 dB is possible compared with the gain of either individual radiator [11] . Moreover, combining electric-type and magnetic-type antennas can extend the operation bandwidth in the lower frequency direction [12] . Below the first resonance frequency of the dipole-type antenna, its input impedance is capacitive.…”

Section: ⅰ Introductionmentioning

confidence: 99%

Antenna Design with Combination of Electric-Magnetic Radiators for RFID System

Kim

2010

Journal of electromagnetic engineering and science

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In this paper, a directive antenna design with a combination of electric-magnetic radiators for an radio frequency identification(RFID) system is presented. To generate a directive antenna radiation pattern, a structure combining a dipole and loop antenna is presented. A reader antenna and tag antenna are proposed for the RFID system. For the reader antenna, the frequency bandwidth defined by S11<-10 dB is approximately from 820∼990 MHz. The forward and backward gain differences are 1.5∼2 dBi. For the tag antenna, the frequency bandwidth is approximately from 860∼920 MHz with a maximum gain of 3.58 dBi at 910 MHz. In both cases, directive radiation characteristics are observed.

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Small Printed Combined Electric-Magnetic Type Ultrawideband Antenna With Directive Radiation Characteristics

Cited by 23 publications

References 9 publications

Radiation $Q$ and Gain of TM and TE Sources in Phase-Delayed Rotated Configurations

Radiation $Q$ and Gain of TM and TE Sources in Phase-Delayed Rotated Configurations

Circuital characteristics and radiation properties of an UWB electric‐magnetic planar antenna for Ku‐band applications

Antenna Design with Combination of Electric-Magnetic Radiators for RFID System

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