Ground radiation method using slot with coupling capacitors

Liu, Y.; Lee, J.; Kim, H.H.; Kim, H.

doi:10.1049/el.2012.4520

Cited by 31 publications

(36 citation statements)

References 5 publications

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“…At the lower resonant frequency, the inductor approximately acts as a short circuit; therefore, tuning and impedance matching are accomplished by C r and C f . The fundamental mode is excited at the lower resonant frequency, and the structure acts as a thick dipole [7]. On the other hand, at the higher resonant frequency, C r acts as a short circuit, and thus, L controls the tuning mechanism.…”

Section: Tuning Mechanism Of Antennamentioning

confidence: 99%

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Tunable-Slot-Type Ground Radiation Antenna with Dual Band Operation Using LC Resonator

Zahid¹,

Kim²

2017

Journal of electromagnetic engineering and science

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A dual-band tunable-slot-type ground radiation antenna is proposed. The feeding structure consists of a coplanar waveguide and a lumped capacitor to excite currents for first-and second-order resonant modes of the ground. The resonant frequencies of both bands are controlled using a series combination of a capacitor and an inductor. The proposed design may be an attractive choice for mobile devices owing to its compact geometry and tunable operating frequencies. The measurement and simulation results of the proposed antenna show good agreement, indicating good impedance matching and radiation performance. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. ⓒ

show abstract

Section: Tuning Mechanism Of Antennamentioning

confidence: 99%

“…Slot-type antennas [7] are relatively compact and do not require rectangular ground clearance. One slot-type antenna [8] used meandered slots for achieving dual-band operation; the number of slot turns had to be changed for frequency tuning.…”

Section: Introductionmentioning

confidence: 99%

Tunable-Slot-Type Ground Radiation Antenna with Dual Band Operation Using LC Resonator

Zahid¹,

Kim²

2017

Journal of electromagnetic engineering and science

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show abstract

“…In miniaturized devices, antennas are required to have a wider bandwidth to cover more operating bands even with compact designs. There are many methods to increase the impedance bandwidth . Among them, a widely applied technology in actual industrial production is called planar inverted‐E (PIE) feed structure wideband technology.…”

Section: Introductionmentioning

confidence: 99%

A new ultra‐wideband miniaturized antenna with a double‐branch radiator

Shin

Jiang

Yang

et al. 2020

Micro & Optical Tech Letters

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The antenna proposed in this study is a double‐branch radiator antenna. The radiator of this antenna is neither a conventional single‐branch radiator nor is it just a simple combination of 2 radiator branches. Moreover, a parallel resonance wideband feeding technology is used on the feed structure of the proposed antenna. The reference antenna in this study was a conventional single‐branch radiator antenna, which also uses the parallel resonance wideband feeding technology. A total of 3 resonant current modes are generated with the proposed antenna. The operating mechanisms of the 3 modes were analyzed in detail. The results showed that the impedance bandwidth was significantly enhanced with the simple modification. The impedance bandwidth reached 210 MHz (0.83‐1.04 GHz), which is 2 times that of the reference antenna and approximately 4 to 5 times that of a conventional planar inverted‐F antenna (PIFA).

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“…The impedance level of radiation loop can also be used for bandwidth enhancement . The GradiAnt can also be designed using a slot‐type configuration . A wideband slot‐type GradiAnt was proposed by Moon and Kim, where slot and ground sizes were optimized to match the operating frequency and the resonance frequencies of the ground mode to achieve 780 MHz bandwidth.…”

Section: Introductionmentioning

confidence: 99%

A wideband loop‐type ground radiation antenna using ground mode tuning and optimum impedance level

Hassan

Zahid

Khan

et al. 2019

Micro & Optical Tech Letters

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In this article, a wideband loop‐type ground radiation antenna is proposed for USB dongle applications. Wide bandwidth has been achieved using the orientation of the antenna embedded in the ground plane along with the impedance level of the feed structure. The ground clearance of the antenna is utilized so that the ground mode is tuned to the mid‐band frequency. The impedance level is controlled by using a series combination of a lumped inductor and a capacitor in the feed loop of the antenna. A good agreement between measured and simulated results has been observed. The measured bandwidth and peak total efficiency of the antenna are 1180 MHz and 88.27%, respectively.

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Ground radiation method using slot with coupling capacitors

Cited by 31 publications

References 5 publications

Tunable-Slot-Type Ground Radiation Antenna with Dual Band Operation Using LC Resonator

Tunable-Slot-Type Ground Radiation Antenna with Dual Band Operation Using LC Resonator

A new ultra‐wideband miniaturized antenna with a double‐branch radiator

A wideband loop‐type ground radiation antenna using ground mode tuning and optimum impedance level

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