A Tunable Circuit Model for the Modeling of Dielectric Resonator Antenna Array

Abdallah, Mona; Wang, Ying; Abdel‐Wahab, Wael M.; Safavi‐Naeini, Safieddin

doi:10.1109/lawp.2015.2476479

Cited by 8 publications

(2 citation statements)

References 11 publications

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“…The absence of a three-port network model can be attributed to the challenge in achieving quantitative representation by a circuit model for the coupling mechanism of a waveguide probe or waveguide broadwall slot. Similar problems are encountered regarding the establishment of an equivalent circuit in the case of a waveguide feeder for array antenna, and comparable studies are performed [27], [28].…”

Section: Introductionmentioning

confidence: 92%

mm-Wave Waveguide Traveling-Wave Power Combiner Design Using an Equivalent Circuit Model

et al. 2019

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The waveguide traveling-wave power combiner (WTWPC) falls into the category of asymmetrical non-isolated power combiners, and, therefore, the active load modulation occurring within the combiner was investigated. Proper manipulation of active load modulation gave rise to a two-step design method for the combiner. The first step formulated the specifications of the combiner in terms of active load impedance at its input ports, which determined the objective scattering parameters of the combiner, as well as the desired coherent excitation signals. The second step established a versatile equivalent circuit model to provide a mapping relation between the scattering parameters and the physical dimensions of the combiner. The proposed equivalent circuit method not only offered a close-to-reality description of the existing type of traveling-wave power combiners but also broke new ground for combiner variants that accommodate the more general driving amplifiers. A Q-band quasi-planar traveling-wave waveguide spatial combined amplifier was built to demonstrate the proposed method. The measured P −1dB bandwidth of the prototype was 6 GHz (33-39 GHz). INDEX TERMS Equivalent circuit, load modulation, traveling wave, mm-wave power amplifier, rectangular waveguide, waveguide probe, waveguide iris window.

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Section: Introductionmentioning

confidence: 92%

mm-Wave Waveguide Traveling-Wave Power Combiner Design Using an Equivalent Circuit Model

et al. 2019

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“…Shannon Capacity Theorem [1] dictates that the capacity of the wireless communication system can be enhanced by three major aspects: (1) use of high a four-element millimeter-wave DRA array with a wide impedance bandwidth of 12%, in which the elements are made up of dielectric-filled pastes. In these DRA arrays, each DRA element is fabricated from a relatively high-loss dielectric material, [16,18] which degrades the radiation efficiency performance of the DRA array. Therefore, in order to improve the performance of antenna array, in addition to designing a more complex feed networks, new low loss dielectric materials are also required which can yield lower signal loss at lower costs.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of High Radiation Efficiency Dielectric Resonator Antenna Array Using Temperature Stable 0.8Zn₂SiO₄‐0.2TiO₂ Microwave Dielectric Ceramic

Zhou

et al. 2023

Adv Materials Technologies

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Array antenna is of great significance in realizing the Sub‐6 GHz fifth‐generation (5G) mobile communication systems, however, its utilization in the base station systems implementation is limited due to high power consumption. In this paper, a high radiation efficiency 4 × 4 cylindrical dielectric resonator antenna (CDRA) array fabricated using the temperature stable 0.8Zn2SiO4‐0.2TiO2 composite ceramic is proposed. TiO2‐doped Zn2SiO4 composite ceramics are synthesized by the conventional solid‐state method. Notably, 0.8Zn2SiO4‐0.2TiO2 composite ceramic sintered at 1250 °C demonstrates excellent microwave dielectric properties with dielectric constant (εr ≈ 8.24), high‐quality factor (Q × f ≈ 35 000@8.08GHz), and the temperature coefficient of resonant frequency (TCF ≈ +4.6 ppm °C−1). Moreover, the composite ceramic CDRA array is designed by exciting fundamental HE11δ mode using the aperture coupling microstrip feeding network. The fabricated composite ceramic based 4 × 4 CDRA array has enhanced measured radiation efficiency of up to 87%, high gain of 17.85 dBi and is a promising candidate for utilization in Sub‐6 GHz 5G Base Station communications systems.

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MIMO DRA with Improved Isolation

2023

Dielectric Resonator Antennas

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A Tunable Circuit Model for the Modeling of Dielectric Resonator Antenna Array

Cited by 8 publications

References 11 publications

mm-Wave Waveguide Traveling-Wave Power Combiner Design Using an Equivalent Circuit Model

mm-Wave Waveguide Traveling-Wave Power Combiner Design Using an Equivalent Circuit Model

Fabrication of High Radiation Efficiency Dielectric Resonator Antenna Array Using Temperature Stable 0.8Zn₂SiO₄‐0.2TiO₂ Microwave Dielectric Ceramic

MIMO DRA with Improved Isolation

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A Tunable Circuit Model for the Modeling of Dielectric Resonator Antenna Array

Cited by 8 publications

References 11 publications

mm-Wave Waveguide Traveling-Wave Power Combiner Design Using an Equivalent Circuit Model

mm-Wave Waveguide Traveling-Wave Power Combiner Design Using an Equivalent Circuit Model

Fabrication of High Radiation Efficiency Dielectric Resonator Antenna Array Using Temperature Stable 0.8Zn2SiO4‐0.2TiO2 Microwave Dielectric Ceramic

MIMO DRA with Improved Isolation

Contact Info

Product

Resources

About

Fabrication of High Radiation Efficiency Dielectric Resonator Antenna Array Using Temperature Stable 0.8Zn₂SiO₄‐0.2TiO₂ Microwave Dielectric Ceramic