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Analysis of institutional authors

Herranz-Herruzo, JiCorresponding AuthorValero-Nogueira, AAuthorFerrando-Rocher, MAuthorBernardo-Clemente, BAuthor

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October 30, 2024
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High-Efficiency Ka-Band Circularly Polarized Radial-Line Slot Array Antenna on a Bed of Nails

Publicated to: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION. 70 (5): 3343-3353 - 2022-01-01 70(5), DOI: 10.1109/tap.2021.3137376

Authors:

Herranz Herruzo, José Ignacio; Valero-Nogueira, Alejandro; Ferrando-Rocher, Miguel; Bernardo-Clemente, Bernardo
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Affiliations

Univ Politecn Valencia, Inst Telecomunicac & Aplicac Multimedia ITEAM - Author

Abstract

Radial-line slot-array antennas (RLSAs) provide an extremely simple solution to achieve high-gain circularly polarized radiation patterns without the need for complicated feeding networks or polarizers. The dielectric-filled radial waveguide, however, drastically reduces the efficiency that is potentially achievable by RLSA antennas at millimeter waveband. In this article, a novel architecture for an all-metal RLSA is proposed by replacing the dielectric material with a regular bed of metallic nails, thus maintaining the required slow wave characteristic within the radial waveguide. The slot array is efficiently optimized by using an ad hoc method-of-moments solver, based on the definition of an equivalent problem in the waveguide region. This accurate optimization process, along with the all-metal nature of the antenna, allows to reach a measured peak total efficiency above 80% at 30 GHz. The fabricated prototype consists of two pieces: the bottom waveguide with the bed of nails and the top slotted plate, which are easily assembled by means of a few screws. Experimental results report a peak gain of 35.0 dBi for a radiation efficiency of 94%, and a wideband matching performance with a very pure axial ratio, below 0.6 dB.
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Keywords

All metalAntenna arraysBed of nailsCircular polarizationCircular polarization (cp)Circularly-polarizedDesignDielectric materialsDirectional patterns (antenna)EfficiencyKa bandKa-bandMethod of momentsMicrowave antennasMillimeter wavesNailsOptimisationsOptimizationProbesRadial line slot array antennasRadial waveguidesRadial-line slot-array antennas (rlsa)Rectangular waveguidesSatcomSlot antennasSlotted waveguide arraysSlotted-waveguide arraysSpiralSpiral antennasSpirals

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2022, it was in position 55/275, thus managing to position itself as a Q1 (Primer Cuartil), in the category Engineering, Electrical & Electronic.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 1.21. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 13, 2025)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Weighted Average of Normalized Impact by the Scopus agency: 1.51 (source consulted: FECYT Mar 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2026-04-02, the following number of citations:

  • WoS: 12
  • Scopus: 19
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-02:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 19.

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 1.
  • The number of mentions on the social network X (formerly Twitter): 1 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
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Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Herranz Herruzo, José Ignacio) and Last Author (Bernardo Clemente, Bernardo).

the author responsible for correspondence tasks has been Herranz Herruzo, José Ignacio.

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