Analysis and Design of a 45$^{\circ}$ Slant-Polarized Omnidirectional Antenna

Quan, XuLin; Li, RongLin; Fan, Yi; Anagnostou, Dimitris E.

doi:10.1109/tap.2013.2288367

Cited by 41 publications

(25 citation statements)

References 12 publications

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“…The proposed structure has the advantages of having no need for the ground plane with simple feeding structure but unfortunately in [22] it was demonstrated that it is actually a circularly polarized omni-directional antenna instead, hence it is not effective as 45° polarized omnidirectional antenna. The cross dipole cylindrical structure in [23] has four printed cross dipoles wrapped around a flexible dielectric cylinder, and a feeding circuit is arranged inside the cylinder. The cross dipoles are composed of a horizontal dipole and a vertical dipole and by adjusting the length of dipoles, it is possible to excite 45° polarized waves.…”

Section: Introductionmentioning

confidence: 99%

Dual Polarized Cylindrical Loop Slot Antenna for Omni Cell Application

Rohani

Kaneda

Arai

2019

IEICE Trans. Commun.

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Urban area suffers severe multipath effects due to its complex infrastructure environment and sector antenna is a popular choice as a base station antenna in those areas. Within sector antennas, omni cell antenna is utilized as supporting antenna to cover low reception areas between them. This paper proposes a slant ±45° dual polarized omnidirectional antenna to operate as the omni cell antenna in those environments. The frequency band covers the IMT band, ranging from 1920 MHz to 2170 MHz with directivity focusing in horizontal plane. The antenna structure consists of a loop slot antenna array as excitation element which is placed inside a cylindrical slot antenna as parasitic element. Good performance is achieved in both Sparameter and directivity results, with a gain of more than 4 dBi and a gain difference of less than 1.5 dB. The measurement results also agree well with the simulation results and the final design confirms that the proposed antenna works effectively as a slant ±45° dual polarized omnidirectional antenna. key words: Cylindrical slot antenna, dual polarization, loop slot antenna, omni cell antenna, omnidirectional antenna, parasitic element. † The authors are with

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Section: Introductionmentioning

confidence: 99%

Dual Polarized Cylindrical Loop Slot Antenna for Omni Cell Application

Rohani

Kaneda

Arai

2019

IEICE Trans. Commun.

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“…However, maximum radiation direction of traditional microstrip conformal antenna is along the radical direction of missile. 1,2 Microstrip Yagi antenna can facilitate the radiation pattern from the radical direction to the direction. 3 However, the balun must be added, which increase the overall dimensions of the antenna.…”

Section: Introductionmentioning

confidence: 99%

“…It is well-known that circular polarization (CP) radiation can be generated from a microstrip patch antenna embedded with shorting pins. 1,2 The shorting pins can alter the distributions of electric fields between the radiating patch and ground plane so that dual orthogonal modes with different resonant frequencies are simultaneously excited. Between the two resonant frequencies, a CP operation band would be found.…”

Section: Introductionmentioning

confidence: 99%

A compact missile‐borne conformal array antenna with off‐axis radiation

Shi

Wang

et al. 2018

Micro & Optical Tech Letters

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A missile‐borne conformal array antenna with off‐axis radiation is designed in this article. 16 inclined radiation elements are connected by a power divider to form a conformal array, which consists of an active patch and a parasitic patch with an open‐circuit stub. By coplanar coupled feeding and adjusting the length of the open‐circuit stub, the radiation pattern toward axis‐direction of missile is realized. Experimental results show the antenna can cover 5.25–5.45 GHz with −10 dB return loss and with off‐axis radiation. Due to its excellent electrical performance and conformal ability, it can be widely used on the missiles.

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“…But the segmented array is long along the axis direction due to the fact that different radiating elements are used for different bands. The cylindrical arrangement of multiband radiators is usually used to generate omnidirectional coverage in the horizontal plane [8]- [9], which results in a large cross sectional dimension not suited for the slender configuration.…”

Section: Introductionmentioning

confidence: 99%

Dual-Band Stacked Annular Slot/Patch Antenna for Omnidirectional Radiation

Shi

Zhang

2016

Antennas Wirel. Propag. Lett.

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This letter presents the design of a new omnidirectional antenna, which is composed of annular slot and annular patch stacked together for dual band operation at 2.5 GHz and 3.5 GHz. The influence of the antenna parameters on the dual band operation is given with simulations. A prototype of the proposed antenna was manufactured with FR4 substrates for the purpose of demonstration. The measured reflection coefficient exhibits dual band operation at 2.32 GHz with fractional bandwidth of 19.3%, and at 3.59 GHz with fractional bandwidth of 18.6%. The stable measured omnidirectional radiation patterns can be obtained at both frequencies. The agreement between the measured and simulated patterns can be observed from the experimental results.

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Analysis and Design of a 45$^{\circ}$ Slant-Polarized Omnidirectional Antenna

Cited by 41 publications

References 12 publications

Dual Polarized Cylindrical Loop Slot Antenna for Omni Cell Application

Dual Polarized Cylindrical Loop Slot Antenna for Omni Cell Application

A compact missile‐borne conformal array antenna with off‐axis radiation

Dual-Band Stacked Annular Slot/Patch Antenna for Omnidirectional Radiation

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