Inverted triangle printed monopole antenna with halfdisk for UWB applications

Chayono, Ridho; Haneishi, Misao; Kimura, Yuichi

doi:10.1109/apmc.2006.4429800

Cited by 5 publications

(4 citation statements)

References 4 publications

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“…The simulated and measured results are in good agreement. Despite the small size, the proposed antenna can achieve a much wider bandwidth than the wideband antennas proposed in [2–7, 10–13].…”

Section: Resultsmentioning

confidence: 99%

“…The design of efficient and small size antennas for wideband applications is still a major challenge. Many different designs of UWB antennas have been studied [2–14]. Some used the monopole configuration such as square, annual ring, triangle, elliptical, pentagon, and hexagonal antennas [2–10] and others used the dipole configuration like bow‐tie antennas [11–14].…”

Section: Introductionmentioning

confidence: 99%

“…Most of these antennas either had relatively large sizes or did not have a real wide bandwidth. In this article, we propose a microstrip‐fed planar‐monopole antenna for UWB operation with a compact size only 26 × 28 mm 2 , significantly less than those antennas reported in [2, 6–8, 10, 11]. Numerous methods have been reported to increase the bandwidth of UWB antennas, including increase of substrate thickness, use of a substrate with low dielectric constant, utilization of various feeding technique, and the use of slot antenna geometry [15, 16].…”

Section: Introductionmentioning

confidence: 99%

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A compact circular‐ring antenna for ultra‐wideband applications

Liu

Cheung

Azim

et al. 2011

Micro & Optical Tech Letters

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destructive technique. It also requires a physical contact with the detected material, which is not always possible. On the other hand, this MIBS system is much simpler, smaller, and cheaper than any LIBS system, because it utilizes low-cost microwave components and could be realized as a portable tool. Yet, the microwave-drill-based MIBS technique is not considered as a substitute for the LIBS technology but more likely as a low-cost extension for specific field applications.The MIBS analyses and identification, demonstrated here by a simple algorithm, could be performed as well by various commercial programs with larger databases and more sophisticated algorithms available for LIBS systems. Such a program (e.g., AvaLIBS-Specline-A or similar) could be incorporated in the MIBS system to include additional elements.Besides technical improvements (like extension toward IR and UV spectral ranges, increasing the sampling rate, and improving optical resolution and sensitivity), the localized microwave-based AES could be incorporated with additional spectroscopic methods such as atomic absorption spectroscopy and atomic florescence spectroscopy in order to verify the identification of the elements in the detected bulk material. Similar microwave excitation concepts might be considered also for the detection of larger molecules and even chemical or biological agents. REFERENCES1.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A compact circular‐ring antenna for ultra‐wideband applications

Liu

Cheung

Azim

et al. 2011

Micro & Optical Tech Letters

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“…According to indexes demanded above, researchers proposed a vast deal of plans of antenna designs that can be divided into following two categories: ultra-wideband radiating antenna elements and highgain omni-directional antennas. Initially, ultra-wideband radiating antenna elements [1][2][3][4] offer an excellent characteristic of a fairly wide range of impedance bandwidth, which can generally reach a ratio more than 2 : 1. However, the antenna radiation pattern bandwidth is relatively narrow and the gain is low.…”

Section: Introductionmentioning

confidence: 99%

A Composite Dipole Antenna Array With Direct Feed

Lin¹,

Lin²,

Liu³

et al. 2013

PIER C

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Design of a composite dipole antenna array with direct feed is presented. In the form of printed-circuit antennas, the structure of the design consists of a doublet antenna and an elliptic loaded monopole antenna with a skirted dipole. As the load of the antenna array, this elliptic monopole provides wider bandwidth. Therefore, with the load possessing a radiation characteristic, it contributes to enhancing efficiency of the antenna array and hence the omnidirectional radiation gain. A good agreement between simulated results by CST Microwave Studio R and tested results suggests that the reflection coefficient for the frequency range between 4.35 GHz to 5.0 GHz is lower than −10 dB. The out-of-roundness on H-plane is lower than 2 dB and the maximum gain is higher than 6 dB for the frequency range from 4.6 to 5.0 GHz. What is more, the gain per wavelength is about 4 dB, showing the antenna's excellence in miniaturization.

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