The use of waveguide simulators to measure the resonant frequency of Ku-band microstrip arrays

Stockmann, Jörg; Hodges, Richard E.

doi:10.1109/aps.2005.1551341

Cited by 13 publications

(7 citation statements)

References 3 publications

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“…In order to confirm the validity of simulation results for the reflection phase characteristics, an -band waveguide simulator [12]- [14] is developed. Because the waveguide uses all conducting walls, the condition of TEM wave used in the earlier undertaken simulations, when producing phase curves, cannot be met.…”

Section: Validation By Waveguide Simulatormentioning

confidence: 96%

Single Layer Reflectarray With Circular Rings and Open-Circuited Stubs for Wideband Operation

Bialkowski

Abbosh

2012

IEEE Trans. Antennas Propagat.

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The design of a single-layer reflectarray, which employs a new phasing element in the form of a fixed-size circular ring and a variable-length open-circuited stub, is presented. The array is developed on a thin substrate supported by a thick foam material. Investigations are performed to obtain a linear reflection phase as a function of the stub's length when the element operates in a unit cell. This goal is achieved by a suitable choice of the ring's radius and width and the stub's width. In order to validate the simulated element's reflection phase behavior, a waveguide simulator is manufactured to perform experimental tests. The phasing element offering best linear phase characteristics is used to design an -band offset fed 13 13 element reflectarray pointing at 20 from the broadside direction. Full-wave simulations performed using CST Microwave Studio show desired radiation characteristics of the designed array antenna. The simulated performance is confirmed by experimental tests performed on the fabricated reflectarray prototype showing a 17.8% 3-dB gain drop bandwidth.

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Section: Validation By Waveguide Simulatormentioning

confidence: 96%

Single Layer Reflectarray With Circular Rings and Open-Circuited Stubs for Wideband Operation

Bialkowski

Abbosh

2012

IEEE Trans. Antennas Propagat.

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“…The elements were tested for the scattering parameters using a tapered open ended X-band waveguide. The perfect electric and magnetic boundaries of the waveguide realise the effect of an infinite array of reflectarray elements [13]. Multiple elements were fabricated to ensure repeatability of the results.…”

Section: Fabrication and Measurementsmentioning

confidence: 99%

Reflection phase analysis of reflectarray antenna based on paper substrate materials

Malik¹,

Ismail²,

Masrol³

et al. 2019

IJEECS

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<span>This article presents an analysis of reflection loss and reflection phase behavior of a novel microstrip reflectarray antenna, embedded on paper substrate material. Two different paper substrates were first analyzed for dielectric material properties. A detailed analysis of scattering parameters of rectangular patch element with variable substrate heights has been carried out. Rectangular patch elements fabricated using adhesive copper tape over the paper substrate, show that a wide bandwidth is achieved compared to available conventional substrate materials. Fabricated patch elements over paper substrate material show a broadband frequency response of 340 and 290 MHz. It has also been demonstrated that the measured reflection phase ranges for both the substrate cover 310º and 294º at low phase gradients of 0.12 and 0.24 º/MHz respectively.</span>

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“…The substrate is backed by a ground patch with a rectangular patch on the other side. In order to realize the effect of an infinite reflectarray, unit element was designed with electric and magnetic boundaries to simulate all the effects that an element faces inside the array such as mutual coupling and related parasitic effects [16]. The excitation E-field of the patch element is shown by the electric vector in Figure 6.…”

Section: Simulation Designsmentioning

confidence: 99%

A wideband reflectarray antenna based on organic substrate materials

et al. 2019

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Significant improvements in terms of bandwidth of reflectarray antennas have been achieved by introduction of innovative paper substrate dielectric materials. Three differently custom composed organic dielectric substrates have been characterized for dielectric properties using a broadband technique based on open ended coax cable method. The substrates show low dielectric permittivities of 1.81, 1.63 and 1.84 along with a loss tangent of 0.053, 0.047 and 0.057. Validation of using the proposed substrates for reflectarray antenna was done by modelling and fabricating reflectarray unit elements on the three substrates. Scattering parameter analysis of unit reflectarray elements show encouraging results with a broadband frequency response of 340 MHz at a phase gradient of 0.14º/MHz. Thus the proposed substrate could serve exceptionally to address the narrow bandwidth problem in reflectarray antennas.

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The use of waveguide simulators to measure the resonant frequency of Ku-band microstrip arrays

Cited by 13 publications

References 3 publications

Single Layer Reflectarray With Circular Rings and Open-Circuited Stubs for Wideband Operation

Single Layer Reflectarray With Circular Rings and Open-Circuited Stubs for Wideband Operation

Reflection phase analysis of reflectarray antenna based on paper substrate materials

A wideband reflectarray antenna based on organic substrate materials

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