Slot Antenna in the Curved Broad Wall of a Sectoral Waveguide

Shanwei, Lue; Li, S.-C.; Cao, S.-M.

doi:10.1109/apmc.1992.672063

Cited by 6 publications

(2 citation statements)

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“…Phased array has been widely used in military radars and civilian satellite communications, to name a few, because of its unique characteristics of scanning without inertia [1], [2]. In recent years, researchers pay more attention on the method of extending phased array's scanning range and beamforming of radiation pattern while scanning.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Slotted Sectoral Waveguide Arrays With Multilayered Radomes

Kalfa

Ertürk

2016

IEEE Trans. Antennas Propagat.

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Abstract-A method of moments/Green's function (MoM/GF) technique in the space domain is used for the rigorous and fast analysis of cylindrically conformal slotted sectoral waveguide arrays (SSWGAs) in the presence of multilayered cylindrical dielectric radomes. Representing the slots by fictitious magnetic currents via the equivalence principle, the geometry is divided into two regions and separate GF representations for each region are developed to be used in conjunction with the MoM procedure. Particularly, in the region that constitutes the cylindrically stratified medium, the newly developed closed-form GF representations for magnetic currents are valid for all source and observation points, including the source region (where source and observation points are on the top of each other). Basic performance metrics of an SSWGA such as equivalent slot currents, S-parameters, radiation patterns in the presence of a multilayered cylindrical radome are presented to assess the accuracy and efficiency of the proposed technique.Index Terms-Closed-form Green's functions (GF), conformal antennas, method of moments (MoM), slotted sectoral waveguide arrays.

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Section: Introductionmentioning

confidence: 99%

Analysis of Slotted Sectoral Waveguide Arrays With Multilayered Radomes

Kalfa

Ertürk

2016

IEEE Trans. Antennas Propagat.

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“…Many researches on slot antennas have been extensively studied on different structures such as rectangular waveguides [1][2][3][4][5][6][7], spheroids [8], infinitely long cylinders [9][10][11], circular cylindrical cavities [12] and coaxial cables [13][14][15][16][17]. Slot antennas on sectoral cylindrical waveguides have been studied in [18][19][20][21][22]. An impedance characteristic of a sectoral cylindrical cavity-backed slot antenna excited by a probe was presented by [23,24].…”

Section: Introductionmentioning

confidence: 99%

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

Wounchoum¹,

Worasawate²,

Phongcharoenpanich³

et al. 2008

PIER

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Abstract-A two-slot array antenna on a concentric sectoral cylindrical cavity excited by a coupling slot is investigated. The electromagnetic fields and Q factors for the first few modes of a concentric sectoral cylindrical cavity are presented. It shows that the appropriate mode for a slot array antenna on a concentric sectoral cylindrical cavity is the TM 110 mode. The correlations between each mode distribution and the magnetic field distributions inside the cavity are presented. The antenna design and the parametric study of a two-slot array antenna on a concentric sectoral cylindrical cavity for a single sector are illustrated. Simulated results are validated by measurements. The results provide useful information for the design of a switched-beam slot array antenna on the concentric sectoral cylindrical cavities.

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