Study on an Uwb Planar Tapered Slot Antenna With Gratings

Xu, Haojun; Hou, Zhi‐Ling; Wang, Jian

doi:10.2528/pierc08011505

Cited by 8 publications

(5 citation statements)

References 9 publications

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“…However, the stability of the spin-filter edge states against the gapless U(1) gauge boson in the bulk requires more careful analysis. This type of states will be studied carefully in future 29 . In the order ψ µ z ψ , fermion gaps are opened for two Dirac valleys with opposite signs, i.e.…”

Section: Su(2n) × Su(2) Four Fermion Termsmentioning

confidence: 99%

Renormalization group studies on four-fermion interaction instabilities on algebraic spin liquids

2008

Phys. Rev. B

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We study the instabilities caused by four fermion interactions on algebraic spin liquids. Renormalization group (RG) is used for three types of previously proposed spin liquids on the square lattice: the staggered flux state of SU(2) spin system, the π−flux state of SU(4) spin system, and the π−flux state of SU(2) spin system. The low energy field theories of the first two types of spin liquids are QED3 with emerged SU(4) and SU(8) flavor symmetries , the low energy theory of the π−flux SU(2) spin liquid is the QCD3 with SU(2) gauge field and emergent Sp(4) (SO (5)) flavor symmetry. Suitable large-N generalization of these spin liquids are discussed, and a systematic 1/N expansion is applied to the RG calculations. The most relevant four fermion perturbations are identified, and the possible phases driven by relevant perturbations are discussed.

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Section: Su(2n) × Su(2) Four Fermion Termsmentioning

confidence: 99%

Renormalization group studies on four-fermion interaction instabilities on algebraic spin liquids

2008

Phys. Rev. B

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“…In order to achieve good radiation pattern, the relatively thin substrate is usually chosen, and the relative permittivity is often chosen to be small. The substrate preferences is often concluded by the experiment, whose equivalent thickness is [2,14]…”

Section: Description and Analysis Of The Antennamentioning

confidence: 99%

“…The ultra-wideband (UWB) has been widely used in high resolution UWB radar, ground penetrating radar, precise orientation system, etc. The ultra-wide band (UWB) [1][2][3][4][5] protocol using the spectrum from 3.1 to 10.6 GHz is a new promising technology suitable for high rate communications in small distances, which makes the study on the UWB antennas to be a new great interest. The tapered slot antenna (TSA) have merits of wide band, light weight, small volume, and simplicity of the geometrical configuration, which make TSA to be the great candidate for the unit of antenna array [6].…”

Section: Introductionmentioning

confidence: 99%

A New Tapered Slot Antenna With Symmetrical and Stable Radiation Pattern

dVdvNioONAp¹,

Hou²,

Wang³

et al. 2008

PIER Letters

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An ultra-wideband exponential tapered slot antenna with new geometrical gratings, which is fed by a nonuniform CPWslotline balun that is essentially important for the ultra-wide band characteristic, has been introduced in this paper. The measurement shows that the frequency band is from 1.7 GHz to over 13 GHz, among which the S 11 is below −10 dB except 2.35 GHz around (below −9 dB). The gratings are introduced to make the antenna to perform better radiation characteristics of a comparatively stable, symmetrical pattern and low side lobes over the operating band as well as obviously higher gain and sharper beam width in the low frequency section in comparison with the one without gratings (more than 3 dB at 1.7 GHz).

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“…Recently, many researchers have developed UWB antennas operating in the UWB frequency band such as UWB patch antenna [2,3], omni-directional and low VSWR UWB antenna [4], various planar UWB antennas [5][6][7][8][9][10][11][12], UWB slot antenna [13], and UWB antenna using Sierpinski sieve fractal [14]. But the size of the published UWB antenna is large and there is a demand for the size reduction of the UWB antenna as the size of the mobile hanset becomes small.…”

Section: Introductionmentioning

confidence: 99%

Compact Uwb Chip Antenna Design Using the Coupling Concept

Lee¹,

Park

2009

PIER

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Abstract-This article describes a compact UWB chip antenna using the coupling concept. The inclined slot is inserted on the rectangular radiating patch of the UWB chip antenna. From experimental results, the measured impedance bandwidth of the antenna (defined by −6 dB return loss) is 2.5 GHz (3-5.5 GHz). Also, the proposed antenna exhibits good radiation patterns with small gain variation (2.5-3.5 dBi) in the operating frequency band. Details of the proposed antenna design and the simulated and measured results are presented and discussed.

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Study on an Uwb Planar Tapered Slot Antenna With Gratings

Cited by 8 publications

References 9 publications

Renormalization group studies on four-fermion interaction instabilities on algebraic spin liquids

Renormalization group studies on four-fermion interaction instabilities on algebraic spin liquids

A New Tapered Slot Antenna With Symmetrical and Stable Radiation Pattern

Compact Uwb Chip Antenna Design Using the Coupling Concept

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