A Hybrid Approach for Finite-Size Fabry-Pérot Antenna Design With Fast and Accurate Estimation on Directivity and Aperture Efficiency

Lu, Yi-Fong; Lin, Yi‐Cheng

doi:10.1109/tap.2013.2279221

Cited by 23 publications

(11 citation statements)

References 15 publications

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“…By using the transverse equivalent network (TEN) model in Fig. 3c, the far-field patterns can be easily calculated, where Y 0 is the intrinsic admittance of the free space and B s is the PRS equivalent susceptance [8][9][10][11]. Therefore, the far-field patterns on E-and Hplanes of a general 2D LWA can be calculated by [8,9]…”

Section: Design Methodsmentioning

confidence: 99%

“…A synthesis procedure is used to analyse the equivalent LWA array, realising high gain and low sidelobes. The element pattern of the leaky-wave array can be derived from the spectral approach and the equivalent networks of the LWA for a dipole excitation [8][9][10][11], or from a slot array excitation including the impact of mutual couplings [12,13]. All the amplitude and phase excitations of the LWA elements are determined by the scattering results from the horns aperture field distribution.…”

Section: Introductionmentioning

confidence: 99%

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Effective method to design large‐size horn arrays with high gain and suppressed sidelobes using meta‐screens

Chen

Yang

2019

IET Microwaves, Antennas & Propagation

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This study presents a novel design of a high gain and suppressed sidelobes horn array covered with meta‐screens. The meta‐screens are composed of two layers of periodic slot structure that divide the large‐size horn into an equivalent leaky‐wave array. A synthesis procedure is therefore proposed to analyse the leaky‐wave array, resulting in high gain and low sidelobes. The element pattern of the leaky‐wave array is derived from the equivalent network of the corresponding leaky‐wave antenna, and the element excitations are determined by the scattering results from the horn aperture field distribution. The synthesised pattern of a horn with the meta‐screens is calculated by using the element pattern and excitations. Based on the synthesis procedure, the optimised horn and meta‐screens with a uniform aperture field are achieved efficiently. Adopting the horn and meta‐screens in an arbitrary N × N array, the array demonstrates a high gain and suppressed sidelobes. To verify the proposed method, a 2 × 2 array prototype is designed and fabricated. The prototype features the gain of 27.4 dB and the sidelobe level less than −10 dB. A good agreement between the predicted and measured results proves the effectiveness of the method.

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Section: Design Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effective method to design large‐size horn arrays with high gain and suppressed sidelobes using meta‐screens

Chen

Yang

2019

IET Microwaves, Antennas & Propagation

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“…In this section, the gains of the typical RCA with the capacitive superstrates and that with the inductive superstrates are calculated by using the leaky-wave model, to investigate the comparative effects. First, the propagation constants of the 'waveguide' formed by the superstrate and the ground plane are calculated by the transverse equivalent network (TEN) [21,22]. Fig.…”

Section: Gains Of the Rcas With The Capacitive Or Inductive Superstratementioning

confidence: 99%

“…In this paper, we use three approaches including the leaky-wave model [19][20][21], full-wave simulations and prototype measurements, to systematically investigate the comparative effects of the capacitive and inductive superstrates comprising single-layer periodic structures on the RCA's gain. First, the RCA with various superstrates is analysed and the cause of the difference is investigated by using the leaky-wave model, which is an analytic method and can be calculated fast.…”

Section: Introductionmentioning

confidence: 99%

“…E tw represents the transverse wave, which is excited by the source antenna and propagates from the centre of the RCA to the border along the 'waveguide' formed by the superstrate and the ground plane [19]. Owing to the partial reflection of the superstrate, a portion of the transverse wave leaks out from the 'waveguide', generating the leaky wave E lw , which determines the RCA's radiation performance [20,21].…”

Section: Introductionmentioning

confidence: 99%

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Comparative effects of capacitive and inductive superstrates on the RCA's gain

Zhou¹,

Chen²,

Cui

et al. 2018

IET Microwaves, Antennas & Propagation

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The radiation performance of the resonant cavity antenna (RCA) is mainly determined by the superstrate, and thereby various superstrates are designed for the RCA to obtain high performance. In this work, the comparative effects of the capacitive and inductive superstrates on the RCA's gain are investigated systematically. Three approaches including the leaky‐wave model, full‐wave simulations and prototype measurements are employed for the investigation. Using the leaky‐wave model, the gains of the RCA with various superstrates are calculated and a difference between the gains with the capacitive and inductive superstrates is observed. Full‐wave simulations and prototype measurements further prove the result. All the approaches demonstrate that the capacitive superstrate has the potential to obtain a higher gain, in comparison with the inductive superstrate having the same reflection magnitude and aperture size.

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The investigation of a portable solar telescope with a high gain metamaterial antenna for F10.7 radio flux measurement

Zhao

Liu

Dong

et al. 2023

Review of Scientific Instruments

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A high gain and high aperture efficiency metamaterial (MTM) antenna is applied to a solar telescope in this paper. First, a portable solar telescope including the MTM antenna and a receiving system is presented. Next, the theory of the MTM antenna is proposed and analyzed based on the ray-tracing model. The designed MTM antenna is composed of a dual circularly polarized Fabry–Pérot resonant antenna (FPRA) and four phase correction metasurfaces (PCMs). The proposed PCMs act as the reflection surface and the phase correction surface at the same time. Every PCM consists of 2 × 18 optimized artificial magnetic conductor (AMC) units. To solve the parallel incidence and narrow bandwidth problems of AMC units, a nonuniform partially reflective surface is designed. Compared with traditional FPRA, the proposed MTM antenna has an increase in peak gain of 37.5% and an aperture efficiency of 11.4%. Then, a receiving system composed of the receiver, equatorial mount, data acquisition module, and display module is presented for solar radio signal processing. Finally, the designed MTM antenna and solar telescope are simulated and measured. A good agreement between the simulation and measurement is observed and can be used to verify this design.

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A Hybrid Approach for Finite-Size Fabry-Pérot Antenna Design With Fast and Accurate Estimation on Directivity and Aperture Efficiency

Cited by 23 publications

References 15 publications

Effective method to design large‐size horn arrays with high gain and suppressed sidelobes using meta‐screens

Effective method to design large‐size horn arrays with high gain and suppressed sidelobes using meta‐screens

Comparative effects of capacitive and inductive superstrates on the RCA's gain

The investigation of a portable solar telescope with a high gain metamaterial antenna for F10.7 radio flux measurement

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