Practical realization of self-complementary broadband antenna on low-loss resin substrate for UWB applications

Saitou, Akira; Iwaki, Taisuke; Honjo, Kazuhiko; Sato, Ken-ichi; Koyama, Tomonori; Watanabe, Koichi

doi:10.1109/mwsym.2004.1339219

Cited by 23 publications

(11 citation statements)

References 5 publications

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“…In this section, parameters H and α are fixed because they have been discussed carefully in [5]. R 1 is attached importance to mainly due to its novelty.…”

Section: Quadrate Bowtie Antennamentioning

confidence: 99%

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Effect of Round Corners on Bowtie Antennas

Qu¹,

Ruan²

2006

PIER

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Abstract-In this paper, three types of novel bowtie antennas with round corners are presented and studied carefully, including quadrate, rounded-edge and triangular shapes, which have better return loss, flatter input impedance, more stable radiation patterns and smaller area at the same time. The effect of round corners is attached importance to due to their novelty. The conclusion is drawn that adding the round corners at the sharp vertexes of radiation surfaces can have positive effects on performances of not only bowtie antennas but also the others.

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“…In this section, parameters H and α are fixed because they have been discussed carefully in [5]. R 1 is attached importance to mainly due to its novelty.…”

Section: Quadrate Bowtie Antennamentioning

confidence: 99%

“…In paper [1], the stable patterns from 1.2 GHz to 3 GHz and wide impedance bandwidth are obtained by RC-loaded but the efficiency is reduced greatly. Bowtie antenna with a circle cap is designed and fabricated in paper [5], but its reflection coefficient in higher frequency is poor because of the matching network.…”

Section: Introductionmentioning

confidence: 99%

Effect of Round Corners on Bowtie Antennas

Qu¹,

Ruan²

2006

PIER

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“…By sharing the radiating element and the impedance transformer, the size can be made smaller than that of the antennas previously proposed [8,13].…”

Section: Introductionmentioning

confidence: 99%

Broadband printed dipole antenna employing self-complementary radiating element and microstrip line feed

Ameya¹,

Yamamoto²,

Nojima³

et al. 2006

Electron. Comm. Jpn. Pt. I

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SUMMARYIn UWB wireless communications systems, communication is performed with frequency resources covering several gigahertz. Therefore, antennas with broadband characteristics are required. In this paper, a planar broadband antenna consisting of a self-complementary radiating element and a tapered microstrip line is proposed. First, FDTD analyses are performed for a printed dipole antenna consisting of self-complementary radiating elements of diamond shape, fan shape, and bowtie shape. It is shown that the diamond-shaped radiating element is advantageous for size reduction. Next, a design guideline for the printed dipole antenna combining a tapered microstrip line with a self-complementary radiating element is investigated. Based on the results of the investigation, an antenna that covers the UWB frequencies (3.1 to 10.6 GHz) approved by the FCC is designed and fabricated. Its characteristics are experimentally evaluated for confirmation of the effectiveness of the proposed antenna.

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“…[1] A miniaturized self-complementary antennas were shown to exhibit the ultra-wideband characteristics covering UWB applications. [2] Differential mode signals have to be fed to the self-complementary antennas according to its operation principle. Meanwhile most of the logic circuits in LSIs operate in the differential mode.…”

Section: Introductionmentioning

confidence: 99%

“…This paper demonstrates ultra-wideband differential mode bandpass filters composed of broadside-and edge-coupled four lines. The self-complementary antenna has the frequency independent constant input impedance, which is as high as 60 π ε e -1/2 Ω [2], resulting in a high return loss in a 50 Ω system. The four coupled-lines were used to serve concurrently to transform the constant input impedance to 50 Ω .…”

Section: Introductionmentioning

confidence: 99%

Ultra-wideband differential mode bandpass filters embedded in self-complementary antennas

Saitou

Aoki

Satomi

et al. 2005

IEEE MTT-S International Microwave Symposium Digest, 2005.

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A 50 Ω matched self-complementary antenna integrated with a four coupled-line ultra-wideband differential mode bandpass filter(BPF), a notch filter and a lowpass filter (LPF) is demonstrated. Broadside-and edge-coupled four coupled-line BPFs were found to exhibit up to 170% fractional bandwidth and to exhibit impedance trans-formation ratio of 1.2 with little bandwidth reduction. Thus, 6-stage BPFs were utilized concurrently to transform the self-complementary antenna's constant input impedance (60 π ε e -1/2 Ω ) to 50 Ω . In addition, LPFs with the BPF and notch filters with the BPF were designed and fabricated. Measured insertion losses of the total filter systems were less than 2.6dB over the Ultra-wideband(UWB) band(3.1GHz to 10.6GHz). The filters were embedded in wideband self-complementary antennas to reject the radiation over the next passband and the 5GHz wireless LAN band.

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Practical realization of self-complementary broadband antenna on low-loss resin substrate for UWB applications

Cited by 23 publications

References 5 publications

Effect of Round Corners on Bowtie Antennas

Effect of Round Corners on Bowtie Antennas

Broadband printed dipole antenna employing self-complementary radiating element and microstrip line feed

Ultra-wideband differential mode bandpass filters embedded in self-complementary antennas

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