Triple-Band Microstrip-Fed Monopole Antenna Loaded With CRLH Unit Cell

Ibrahim, Amr A.; Safwat, Amr M. E.; El‐Hennawy, Hadia

doi:10.1109/lawp.2011.2181813

Cited by 51 publications

(59 citation statements)

References 9 publications

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“…Reference [5] proposes a novel CRLH-TL unit cell, which is based on the theory of conventional unit cell presented in [1]. In this article, the proposed CRLH-TL unit cell consists of a CSSRR and a gap.…”

Section: Crlh-tl Unit Cell Design and Analysismentioning

confidence: 99%

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Multiband Antenna Based on Loading a CPW-Fed Monopole With One CRLH-Tl Unit Cell

Li¹,

Wang²,

Gao³

et al. 2014

PIER Letters

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Abstract-A Coplanar Waveguide (CPW)-fed monopole loaded with Composite Right/Left Handed Transmission Line (CRLH-TL) unit cell is presented in this letter. Multiband is achieved due to the nonlinear dispersion relation of the CRLH-TL unit cell. The CRLH-TL unit cell supports a fundamental LH wave (phase advance) at lower frequencies and a RH wave (phase delay) at higher frequencies. By loading CRLH-TL unit cells with a conventional monopole, the resonant frequency of higher order mode can be decreased, and zeroth-order mode or even negative-order mode can be achieved. As a result, the proposed antenna operates at 1.43 GHz, 2.58 GHz, 3.31 GHz and 4.4 GHz. Finally the modified antenna is fabricated and measured; measurements and EM simulations are in a good agreement that confirms the proposed theory.

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Section: Crlh-tl Unit Cell Design and Analysismentioning

confidence: 99%

“…Such MTM unit cells have been used for providing multi-frequency operation, reducing the size of antennas and extending the bandwidth. In [5], several microstrip-fed monopole antennas are loaded with CRLH-TL unit cells, which allow the antennas to operate at zeroth-order mode or even negative-order mode.…”

Section: Introductionmentioning

confidence: 99%

Multiband Antenna Based on Loading a CPW-Fed Monopole With One CRLH-Tl Unit Cell

Li¹,

Wang²,

Gao³

et al. 2014

PIER Letters

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“…As a first step towards the monopole design, four essential parameters are defined for characterization and analysis convenience: they are the phase ϕ MTM TL induced from single artificial TL element, the ϕ Mono caused by the residual radiation part of the host monopole, the resonant modes (indices) n and the number of the utilized artificial TL element N . Similar to the monopoles by employing nonresonanttype TL elements [21], the overall possible eigenfrequencies of the monopoles by loading resonant-type elements satisfy the following resonant condition.…”

Section: Fundamentals and Theoretical Backgroundmentioning

confidence: 99%

“…Since artificial electromagnetic (EM) metamaterials (MTMs) [8][9][10][11][12][13][14][15][16] exhibit properties not commonly encountered in nature, there has been a renewed and actual interest in using the artificial EM MTMs in the design of monopole or dipole antennas [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] antennas, and high-gain or circularly polarized antennas [13][14][15][16]36] over recent years. In general, the monopole or dipole antennas can be classified into three categories according to the operation mechanisms and the loading manners.…”

Section: Introductionmentioning

confidence: 99%

“…Although compact layout and multiple operation modes are achieved in aforementioned antennas made of DNG MTM TLs, the mostly reported TL elements are confined to the nonresonant-type ones by using chip elements which are not efficient radiators [17][18][19][20], [26,33,36] and the shunt inductors in the rarely reported distributed TLs are restricted to metallic vias which would degrade the antenna gain due to the metallic losses [21,22]. Moreover, further miniaturization is still available and a pressing task since the compactness is of great importance to the portable and handheld antennas.…”

Section: Introductionmentioning

confidence: 99%

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Multifrequency Monopole Antennas by Loading Metamaterial Transmission Lines With Dual-Shunt Branch Circuit

Xu¹,

Wang²,

Lv³

et al. 2013

PIER

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Abstract-The theory and design of a new family of multifrequency monopole antennas by smartly loading a set of complementary metamaterial transmission line (CMTL) unit cells are investigated. The distributed CMTL elements, epsilon negative (ENG) or double negative (DNG) through incorporating additional capacitive gaps, contain a Koch-shaped extended complementary single split ring resonator pair (K-ECSSRRP) etched on the signal strip. The K-ECSSRRP features dual-shunt branches in the equivalent circuit model, rendering a distinguished resonator with dual zeroth-order resonant (ZOR) modes. By smartly controlling the element layout and loading different numbers of unit cells, ten antennas covering different communication standards (GSM1800, UMTS, Bluetooth, DMB and WIMAX) are designed and four of them are fabricated and measured. At most of operating frequencies, the antennas exhibit impedance matching better than −10 dB and normal monopolar radiation patterns. Numerical and experimental results both confirm that the single-cell or dual-cell ENG and DNG CMTL-loaded monopoles exhibit almost identical dual ZOR modes. Moreover, the loaded elements also contribute to the radiation, which is the major advantage of this prescription over previous lumped-element loadings. These antennas are compact and the multiple operating bands can be arbitrarily engineered, enabling an alternative and easy avenue toward monopoles with multifunction and high integration.

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Triple‐band compact monopole antenna with modified SS‐CML units loading

Deng

Xie

et al. 2013

Micro & Optical Tech Letters

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Triple‐band compact monopole antenna with SS‐CML units loading is proposed in this article. On the basis of mathematical analysis to equal electrical length SS‐CML unit, extended analysis to the unequal case is done. The design method is presented by CRLH‐TL theory. The multifrequency performance of the antenna by changing the current phase through the monopole is achieved. Simulated results show that the antenna can operate at three separate frequency bands of 1.36–1.69 GHz 2.17–2.59 GHz, and 3.38–3.83 GHz, with return loss less than −10 dB. Measurements and EM simulations are in good agreement with the theoretical analysis. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:152–158, 2014

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Triple-Band Microstrip-Fed Monopole Antenna Loaded With CRLH Unit Cell

Cited by 51 publications

References 9 publications

Multiband Antenna Based on Loading a CPW-Fed Monopole With One CRLH-Tl Unit Cell

Multiband Antenna Based on Loading a CPW-Fed Monopole With One CRLH-Tl Unit Cell

Multifrequency Monopole Antennas by Loading Metamaterial Transmission Lines With Dual-Shunt Branch Circuit

Triple‐band compact monopole antenna with modified SS‐CML units loading

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