Omnidirectional Circularly Polarized Antenna Utilizing Zeroth-Order Resonance of Epsilon Negative Transmission Line

Park, Byung‐Chul; Lee, Jeong‐Hae

doi:10.1109/tap.2011.2152337

Cited by 143 publications

(83 citation statements)

References 10 publications

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“…In [12], the presented antenna uses a monopole and a loop radiator to achieve omnidirectional CP property. Based on the ZOR of the MTL and curved branches, a novel omnidirectional CP antenna is reported in [13]. Though the single-fed CP antennas in [11][12][13] are in low profile, they typically have narrow 10-dB impedance bandwidths (less than 14%).…”

Section: Introductionmentioning

confidence: 99%

“…Based on the ZOR of the MTL and curved branches, a novel omnidirectional CP antenna is reported in [13]. Though the single-fed CP antennas in [11][12][13] are in low profile, they typically have narrow 10-dB impedance bandwidths (less than 14%). Additionally, dual-band omnidirectional CP antennas are investigated either by using the ZOR and FOR modes of the MTL [14] or by using the TM 01 and TM 02 modes of the microstrip antenna [15].…”

Section: Introductionmentioning

confidence: 99%

“…The antenna consists of a square patch fed by coaxial probe and modified Γ-shaped strips with shorting pins. Though the antennas in [11][12][13] use a similar configuration, they provide only a narrow bandwidth since just one resonance is excited. In this paper, a multi-resonant structure is adopted by adding an inner Γ-shaped strip inside the outer one, and as a result, the proposed antenna achieves another resonance of the monopole mode and provides a wide bandwidth.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Wideband Omnidirectional Circularly Polarized Patch Antenna With Multi-Resonant Structure

Yang¹,

Zhang²,

Ji³

et al. 2017

PIER C

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Abstract-A wideband omnidirectional circularly polarized (CP) patch antenna is proposed in this paper. The proposed antenna is composed of a disk-loaded coaxial probe and four pairs of modified Γ-shaped strips loaded with shorting pins. Each pair of modified Γ-shaped strips consists of an inner Γ-shaped strip and an outer Γ-shaped strip. The approach employed in this design for improving the operating bandwidth is to add an inner Γ-shaped strip and make it couple to the outer one. By introducing the two coupled Γ-shaped strips, two different monopole modes can be achieved simultaneously and controlled separately by two different corresponding parts of these two Γ-shaped strips, respectively, and they can be merged to realize a wide-band impedance matching. Meanwhile, two minimum axial ratio (AR) points around the resonances of the antenna are excited by the coupled Γ-shaped strips, and they can be reallocated closely to each other for wide AR bandwidth. The measured results show that the proposed design has a 10-dB impedance bandwidth of 22.7% (2.26-2.84 GHz), 3-dB AR bandwidth of 33.6% (2.1-2.95 GHz) and low profile of 0.1λ 0 (λ 0 is the free-space wavelength at center frequency). In addition, a parametric discussion is conducted to further verify the proposed design.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Wideband Omnidirectional Circularly Polarized Patch Antenna With Multi-Resonant Structure

Yang¹,

Zhang²,

Ji³

et al. 2017

PIER C

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“…This is especially true for the circularly polarized (CP) microstrip antenna which owns additional advantages of imposing less strict restrictions on orientation of the transmitter and receiver and mitigative multi path effects. A survey of recent literature indicates that a considerable amount of efforts have been devoted to the antennas with CP, for instance, CP antennas for bandwidth enhancement by using left handed (LH) metamaterial transmission line (TL) [8] and reactive impedance substrates [9], respectively, CP antennas with gain and directivity enhancement [10][11][12][13], omnidirectional radiations [14][15][16] and even dual-band or multifrequency operation with radiation pattern selectivity and polarization diversity [16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

A Miniaturized Triple-Band Metamaterial Antenna With Radiation Pattern Selectivity and Polarization Diversity

Xu¹,

Wang²,

Qi³

2013

PIER

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Abstract-A novel triple-band single-fed compact microstrip antenna with varied polarization states and radiation patterns is proposed based on two-dimensional artificial metamaterial transmission line (TL). The TL element is composed of complementary split ring resonators (CSRRs) etched in the ground plane and a capacitive gap embedded in the stepped-impedance conductor line. By inserting a 2 × 2 array of the original element in conventional patch and feeding the resultant structure with an annular-ring slot along the diagonal, an antenna working in three resonant modes (n = −1, n = 0, and n = +2) is engineered at three specific well-separated frequencies f −1 = 1.5, f 0 = 2.4 and f +2 = 3.5 GHz, respectively. As a result, both the numerical and experimental results illustrate that the antenna exhibits a patch-like radiation with pure linear polarization in the n = −1 mode, a monopolar radiation with circular polarization in the n = 0 and also an asymmetric quasi monopolar radiation with a hybrid linear polarization in the n = +2 mode. The antenna features compact whose patch occupying only an area of 0.246λ 0 × 0.246λ 0 × 0.03λ 0 at f −1 and exhibits groups of advantages such as high radiation efficiency. Moreover, the proposed prescription, free of any metallic via, perturbation structure and complicated feeding network, is of practical value and opens an alternative avenue toward new types of antenna with agile polarization capability and versatile radiation patterns.

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“…Recently two other methods have been proposed, which allowed to implement omnidirectional CP performance with a planar structure. In [5] a metamaterial and a zeroth order resonance is used to produce omnidirectional CP in the plane of antenna's substrate. Circular polarisation is generated by employing four arm-shaped radiators for horizontal component and a zeroth order resonance of a patch in the middle for vertical component.…”

Section: Introductionmentioning

confidence: 99%

Omnidirectional circularly polarized patch antenna with post manufacture characteristic refinement

Narbudowicz¹,

Bao²,

Ammann³

2013

2013 International Workshop on Antenna Technology (iWAT)

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ABSTRACT:We propose an omnidirectional circularly polarised planar microstrip patch antenna, in which both impedance bandwidth and circular polarization properties can be adjusted after antenna manufacture. This is done by appropriately tuning four adjustable capacitors, incorporated into the patches. To demonstrate the properties, the proposed antenna is tuned to the GPS L1 band and then re-tuned for Beidou/Galileo E2 band by only changing capacitors values. Design guidelines for such retuning are provided.

show abstract

Omnidirectional Circularly Polarized Antenna Utilizing Zeroth-Order Resonance of Epsilon Negative Transmission Line

Cited by 143 publications

References 10 publications

Wideband Omnidirectional Circularly Polarized Patch Antenna With Multi-Resonant Structure

Wideband Omnidirectional Circularly Polarized Patch Antenna With Multi-Resonant Structure

A Miniaturized Triple-Band Metamaterial Antenna With Radiation Pattern Selectivity and Polarization Diversity

Omnidirectional circularly polarized patch antenna with post manufacture characteristic refinement

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