A Two-Slot Array Antenna on a Concentric Sectoral Cylindrical Cavity Excited by a Coupling Slot

Wounchoum, Phairote; Worasawate, Denchai; Phongcharoenpanich, Chuwong; Krairiksh, M.

doi:10.2528/pier08091204

Cited by 9 publications

(9 citation statements)

References 24 publications

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“…The L-shaped slot extends the slot in vertical direction. The horizontal length of the slot can be kept as the original dimension in [23]. The L-shaped coupling slot with the switching circuit is shown in Figure 3.…”

Section: Coupling Slotmentioning

confidence: 99%

“…In this paper, the initial parameters are taken from [23]. The antenna structure shown in Figure 1 consists of two parts, the concentric sectoral cylindrical cavity and the circular waveguide shorted at the top end.…”

Section: A Single Sector Antennamentioning

confidence: 99%

“…The L-shaped slot is proposed for the coupling slot because the length of the coupling slot in [23] is fit to the available area. To disable the coupling slot, the length of the slot must be extended to disturb the electromagnetic fieldson the slot.…”

Section: Coupling Slotmentioning

confidence: 99%

“…Hence, this antenna provides a narrow beam in elevation pattern. In this paper, a switched-beam antenna using circumferential-slot on a concentric sectoral cylindrical cavity excited by coupling slots is proposed using six sectoral antennas in [23] to obtain switched-beam pattern in six directions covering 360 degrees in the azimuthal plane. The Lshaped coupling slots are proposed for switching circuit connections.…”

Section: Introductionmentioning

confidence: 99%

“…In [23], we proposed a two-slot array on a concentric sectoral cylinder. This antenna consists of a single coupling slot and two circumferential-slot elements in vertical array for radiators.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A Switched-Beam Antenna Using Circumferential-Slots on a Concentric Sectoral Cylindrical Cavity Excited by Coupling Slots

Wounchoum¹,

Worasawate²,

Phongcharoenpanich³

et al. 2011

PIER

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Abstract-This paper presents a switched-beam antenna using circumferential-slot on a concentric sectoral cylindrical cavity excited by coupling slots to operate at 5.8 GHz. The advantages of this antenna are conformal structure, high directivity and capable of switched-beam pattern in six directions. The antenna design starts from a single sector which is capable of switching between radiating and non-radiating modes. The L-shaped coupling slots are proposed to accommodate the switching circuit. Each RF switch is made of two PIN diodes connected in a reverse series connection and placed across the slot at the appropriate location. Subsequently, the exciting probe is designed for matching TM 01 mode of the circular waveguide. The measured results of the proposed antenna give a gain of 7 dBi and |S 11 | less than −20 dB at 5.8 GHz. This antenna is suitable for base station applications that require the switched-beam pattern in the azimuthal plane.

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Section: Coupling Slotmentioning

confidence: 99%

Section: A Single Sector Antennamentioning

confidence: 99%

Section: Coupling Slotmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Switched-Beam Antenna Using Circumferential-Slots on a Concentric Sectoral Cylindrical Cavity Excited by Coupling Slots

Wounchoum¹,

Worasawate²,

Phongcharoenpanich³

et al. 2011

PIER

Self Cite

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Mode‐matching analysis for characterization of the sectoral waveguide mode converters

Kumar

Dwivedi

Jain

2019

Micro & Optical Tech Letters

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An S‐band sectoral waveguide (SWG) mode converter was presented for simulation and electromagnetic analysis. A mode‐matching technique (MMT) for the electromagnetic analysis of an SWG mode converter has been proposed. The problem of trifurcation of the coaxial waveguide to shape SWGs and bifurcation of SWGs is discussed. In this framework, the selections of appropriate testing modes at each junction are justified. The simulation time has improved and the complexity of the proposed problem has reduced by the proposed approach. The numerical results of the MMT are compared against simulation results and are found to be in good agreement. The efficiency of both the simulated and analyzed results shows a mode conversion efficiency higher than 98.0%. An experimental evaluation shows the mode conversion of TM01 to TE11 mode using far‐field radiation patterns and has been compared with simulation results. Also, the MMT and simulation validate the mode conversion of TM01 to TE11 mode.

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Longitudinal slotted waveguide array feed networks

Meiguni

Haddad

Hosseinbeig

2018

Int. J. Microw. Wireless Technol.

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In this paper, two new feed network designs for single layer and double layer slotted waveguide array antennas are presented. A microstrip to substrate integrated waveguide transition is applied to the single layer antenna. The aperture coupling mechanism is used in order to find the optimum feed network for double-layer structure and to obtain stable radiation characteristics over the frequency band. The prototypes of the proposed antennas have been fabricated and tested. The measured results were compared very well with the simulation results obtained from CST microwave studio and showed low side lobe level at the center frequency of 11.5 GHz for the low-profile 4-channel slotted waveguide arrays.

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A Two-Slot Array Antenna on a Concentric Sectoral Cylindrical Cavity Excited by a Coupling Slot

Cited by 9 publications

References 24 publications

A Switched-Beam Antenna Using Circumferential-Slots on a Concentric Sectoral Cylindrical Cavity Excited by Coupling Slots

A Switched-Beam Antenna Using Circumferential-Slots on a Concentric Sectoral Cylindrical Cavity Excited by Coupling Slots

Mode‐matching analysis for characterization of the sectoral waveguide mode converters

Longitudinal slotted waveguide array feed networks

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