Compact Phase Corrected &lt;italic&gt;H&lt;/italic&gt;-Plane Horn Antenna Using Slow-Wave Structures

Sun, Dongquan; Xu, Jun

doi:10.1109/lawp.2016.2618843

Cited by 30 publications

(6 citation statements)

References 12 publications

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“…Another recent design strategy to provide uniformity in the phase distribution of H-plane horns is the use of slow-wave (SW) structures which reduce the phase velocity as opposed to the previous mentioned approaches. These SW structures have been implemented in conventional rectangular waveguide for H-plane horns as metal pins [14], [15] and for SIW horns as metallized blind via-holes [16]. A combination of structures that produce lower and higher phase velocity by using embedded vias and air hole arrays, respectively, is presented in [17] but for a tapered slot antenna.…”

Section: Introductionmentioning

confidence: 99%

Holey SIW Horn Antenna Based on an H-Plane Lenswise Wavefront Collimation

Biedma-Pérez

Padilla

Segura-Gómez

et al. 2023

IEEE Trans. Antennas Propagat.

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This paper presents an H-plane SIW horn antenna whose directivity is enhanced using holey unit cells along the horn flaring. By wisely drilling the horn antenna, it is possible to reduce the phase error in the aperture which is a common problem in horn antennas if the optimum dimensions are not employed. An analysis of the distribution of the unit cells along the horn antenna has been carried out to achieve the desired equivalent refractive indices. By changing the hole radius, different equivalent refractive indices can be tuned with a wideband performance. This fact enables the implementation of a collimation zone inside the horn antenna which transforms the pseudo-circular wavefront into a quasiplanar one in the radiating aperture. The produced directivity is similar to the horn antenna with the optimum dimensions but a longitudinal reduction of 53.7% and a higher realized gain are achieved. A holey SIW horn antenna is designed and manufactured. The measured results show an impedance bandwidth performance below -10 dB from 34.3 GHz to 44.5 GHz (25.9%) with a realized gain above 10 dBi. The gain difference regarding a SIW horn antenna without the collimation zone is about 2-3 dBi in the operating frequency range.

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Section: Introductionmentioning

confidence: 99%

Holey SIW Horn Antenna Based on an H-Plane Lenswise Wavefront Collimation

Biedma-Pérez

Padilla

Segura-Gómez

et al. 2023

IEEE Trans. Antennas Propagat.

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“…In [29], [30], metamaterial inspired bulky wire-medium PCs were investigated to improve the gain of shortened horns. The metallic blocks loaded with slow-wave techniques [31], [32] can also enhance the gain of shortened horns. However, block placements of such designs are arbitrary and require a sophisticated metal manufacturing process.…”

Section: Introductionmentioning

confidence: 99%

Self-Sustained Rigid Fully Metallic Metasurfaces to Enhance Gain of Shortened Horn Antennas

et al. 2022

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This paper presents mechanically robust, low-cost, lightweight, and polarization-independent metallic metasurfaces (MMs) to enhance the gain and directivity of shortened horn antennas. The MM was designed based on the strategy of correcting the actual phase errors probed on the aperture of the horn using the near-field phase-transformation principle. The fundamental unit cell of the MM is made of a pair of cross slots created in a monolithic thin conductive sheet and is entirely free from high-cost dielectrics. The lack of dielectrics makes MM lightweight, cost-efficient and easy to fabricate the prototype for mass production. The MM has a 2D array of unit cells arranged to increase the gain of the shortened horn by improving aperture efficiency through local phase transformation in a wide frequency band. The concept is demonstrated by designing MMs for shortened horns with different heights and the same physical aperture at the center operating frequency of 12.5 GHz. The maximum gain-bandwidth with MM is achieved for the shortest horn, which is validated by measuring the physical prototype. The results indicate that horn gain with MM increases by 9.2 dB (from 11.1 to 20.3 dBi) and has a 3-dB fractional gain-bandwidth of 10.4%. The weighted density of the fabricated MM is only 0.87 g/cm 2 . Including MM, the total antenna height is around 61% shorter than a conventional air-filled horn having a similar peak gain.

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“…The second category contains those techniques that will modify the geometrical characteristics of the structure in the flare section, mostly for tailoring the phase distribution 7 – 11 . For instance in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…Another method is to apply post metalized via-holes inside the horn carefully to make an in-phase wavefront in a same transverse line 10 . It is also proposed to load the flare section by a set of equally distributed metal pins across the center line of broad walls to form a slow-wave structure; this minimizes the phase difference between the center and the edges of the flare which ultimately improves the gain 11 . As the presented geometry can not be easily manufactured by printed circuit techniques, the prototype is embodied as a metal-only structure, making an air-filled H-plane horn.…”

Section: Introductionmentioning

confidence: 99%

Guided-wave manipulation in SIW H-plane horn antenna by combining phase correction and holographic-based leakage

Araghi

Khalily

Yurduseven

et al. 2022

Sci Rep

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A hybrid technique is proposed to manipulate the field distribution in a substrate integrated waveguide (SIW) H-plane horn to enhance its radiation characteristics. The technique comprises two cascaded steps to govern the guided waves in the structure. The first step is to correct the phase of fields and form a quasi-uniform distribution in the flare section so that the gain increases and side-lobe-level (SLL) decreases. This is obtained by loading the structure with a novel modulated metal-via lens. Field expansion on the radiating aperture of the SIW H-plane horn generates backward surface waves on both broad walls which increases the backlobe. In the second step, these backward surface waves are recycled and directed forward with the aid of holography theory. This is achieved by adding a couple of dielectric slabs with holographic-based patterns of metallic strips on both broad walls. With this step, the backlobe is reduced and the endfire gain is further increased. Using the proposed technique, the structure is designed and fabricated to operate at $$f=30$$ f = 30 GHz which simultaneously improves the measured values of gain to 11.65 dBi, H-plane SLL to $$-\,17.94$$ - 17.94 dB, and front-to-back ratio to 17.02 dB.

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Compact Phase Corrected <italic>H</italic>-Plane Horn Antenna Using Slow-Wave Structures

Cited by 30 publications

References 12 publications

Holey SIW Horn Antenna Based on an H-Plane Lenswise Wavefront Collimation

Holey SIW Horn Antenna Based on an H-Plane Lenswise Wavefront Collimation

Self-Sustained Rigid Fully Metallic Metasurfaces to Enhance Gain of Shortened Horn Antennas

Guided-wave manipulation in SIW H-plane horn antenna by combining phase correction and holographic-based leakage

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