High-Gain Conical-Beam Traveling-Wave Array Antenna Based on a Slotted Circular Waveguide at $Ku$ -Band

Tamayo‐Domínguez, Adrián; Masa‐Campos, José Luis; García-Marín, Eduardo; Escalona-Moreno, D.

doi:10.1109/tap.2020.2970031

Cited by 14 publications

(15 citation statements)

References 21 publications

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“…1(a)). The parameter provides the coupling capability of the element when it is fed by a progressive wave (a parameter previously introduced by the authors in several related works such as [37]- [39]). This parameter is specifically defined as the ratio between the power radiated by the slots and the input incident power to them, as it was established in [eq.…”

Section: Single Radiating Element: Ring Of Cross-slotsmentioning

confidence: 99%

“…The two proposed array antennas will be designed following a quite similar process to the one presented in [37], although in this case dual band and dual polarization performance is provided. Both antenna designs (DP-CBAA and DB-CBAA) will be developed following the antenna topology presented in Fig.…”

Section: A Design Rulesmentioning

confidence: 99%

“…Nevertheless, in this case the CW requires to be filled with PTFE dielectric in order to achieve the broadside beam direction. Recently, a similar slotted array on CW at 17 GHz has been published by authors [37], but with two remarkable differences. Firstly, a conical instead of a broadside omnidirectional beam is proposed to improve the coverage.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, an evolution of the antenna in [37] is presented, where several rings of transversal slots were located along the CW surface (without dielectric filler). Such design provided a directive conical-beam radiation with a single linear vertical polarization by the excitation of the waveguide TM01 mode.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, two different conical-beam antenna topologies are proposed to cover the n257 (26.5-29.5 GHz) and n260 (37-40 GHz) frequency bands identified by the 3GPP for future 5G communications [12]. Firstly, a dual-polarized antenna only for the n260 band (37)(38)(39)(40), where the dual polarization is generated by the excitation of the TM01 and TE01 modes. In addition, a second design of a dual-band antenna covering both the n257 and n260 frequency bands, where the TM01 mode generates vertical polarization for the 26-30 GHz band while the TE01 mode generates horizontal polarization for the 37-40 GHz band.…”

Section: Introductionmentioning

confidence: 99%

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Dual-Polarization and Dual-Band Conical-Beam Array Antenna Based on Dual-Mode Cross-Slotted Cylindrical Waveguide

2021

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Two designs of conical-beam array antennas are presented for different fifth-generation applications. They are based on slotted cylindrical waveguides and a travelling-wave topology, where the waveguide is used to progressively excite a cross-slot array. A total of 384 cross-slots, formed by transversal and longitudinal slots, are grouped in rings of eight equally-spaced cross-slots. The propagation of TM01 and TE01 modes in the cylindrical waveguide can provide dual polarization by the independent excitation of transversal and longitudinal slots, respectively. Firstly, a dual linearly-polarized antenna design in the 37-40 GHz band is presented, conforming a high-gain conical-beam pattern. Secondly, a similar antenna design working in the 5G dual-band of 26-30 GHz and 37-40 GHz is also presented. In this last case, transversal and longitudinal slots are designed to radiate at the two different frequency bands of 26-30 GHz (vertical polarization) and 37-40 GHz (horizontal polarization), recently assigned for very high-speed 5G applications. In order to experimentally validate the proposed topologies, the dual-band design has been prototyped by combining 3D-printing and CNC milling techniques, providing high experimental performance. Directive tilted omnidirectional coverages with peak realized gains around 14 dBi have been obtained, as well as a total efficiency between 83% and 90% for both frequency bands.

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Section: Single Radiating Element: Ring Of Cross-slotsmentioning

confidence: 99%

Section: A Design Rulesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dual-Polarization and Dual-Band Conical-Beam Array Antenna Based on Dual-Mode Cross-Slotted Cylindrical Waveguide

2021

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Effective bandwidth improvement of Travelling-Wave waveguide array antennas using double Parallel-Slot radiating elements

Pascual-Gonzalez,

Sanchez-Olivares,

Tamayo-Dominguez

et al. 2024

AEU - International Journal of Electronics and Communications

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Bandwidth‐enhanced horizontally polarized omnidirectional slot antenna based on single‐ridge trapezoidal waveguide

Ye,

You,

Shen

et al. 2024

Electronics Letters

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This letter presents a Ku‐band horizontally polarized (HP) omnidirectional antenna based on single‐ridge trapezoidal waveguide (STW). Four groups of longitudinal slots are etched on a pair of back‐to‐back arranged STWs to achieve the HP omnidirectional radiation performance. The number and distribution of each radiation slot group are optimized to reduce the gain variation. An out‐of‐phase stripline power divider cascaded with two probe‐based vertical power dividers is used to excite all radiating slots in a series‐parallel hybrid structure, which helps to enhance the boresight radiation bandwidth. For demonstration, a prototype covering 14.5 to 15.5 GHz is designed, fabricated, and measured. Experimental results show that the good impedance matching (|S11|←14 dB) and the measured out‐of‐roundness for the omnidirectional radiation pattern are less than 4.4 dB within the desired frequency band. High gain and wideband omnidirectional radiation characteristics can provide a wide range of coverage and good signal transmission performance for outdoor wireless communication systems.

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High-Gain Conical-Beam Traveling-Wave Array Antenna Based on a Slotted Circular Waveguide at $Ku$ -Band

Cited by 14 publications

References 21 publications

Dual-Polarization and Dual-Band Conical-Beam Array Antenna Based on Dual-Mode Cross-Slotted Cylindrical Waveguide

Dual-Polarization and Dual-Band Conical-Beam Array Antenna Based on Dual-Mode Cross-Slotted Cylindrical Waveguide

Effective bandwidth improvement of Travelling-Wave waveguide array antennas using double Parallel-Slot radiating elements

Bandwidth‐enhanced horizontally polarized omnidirectional slot antenna based on single‐ridge trapezoidal waveguide

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