Wyniki wyszukiwania dla: recofigurable anenna

• Miniature reconfigurable antenna

  Publikacja

  • R. Baranowski

  - Rok 2020

  This work concerns the design of a miniature, low-profile reconfigurable antenna based on Huygens metamaterial sources for frequency f0 = 2.45 GHz. Two planar Huygens sources were designed consisting of near-field resonators. Sources are excited from a specially designed reconfigurable control system. Thanks to the two PIN diodes, the system can realize two cardioid radiation characteristics with...

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• Shape Memory Alloy-Based Fluidically Reconfigurable Metasurfaced Beam Steering Antenna

  Publikacja

  • S. Shah
  • S. Shah
  • E. Bernhardsson
  • S. Kozieł

  - IEEE Access - Rok 2023

  A low-cost actuator-based fluidically programmable metasurface (FPMS) antenna is proposed to solve the slow tuning speed problem of the manually fluidic based reconfigurable antennas. The FPMS-based antenna is probe-fed and comprises a 4 × 4 square ring metasurface as a superstrate. Moreover, two shape memory alloy (SMA)-based electrically-controlled actuators are employed in the design for controlling the position of the 3D-printed...

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• Microfluidically Frequency-Reconfigurable Self-Quadruplexing Antenna Based on Substrate Integrated Square-Cavity

  Publikacja

  • R. K. Barik
  • S. Kozieł

  - AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS - Rok 2024

  In this article, a novel concept of self-quadruplexing tunable antenna (SQTA) enabled by microfluidic channels is investigated. The operating channels are either filled with air or dielectric liquids to enable frequency tunability. The proposed SQTA is implemented on the substrate-integrated square-cavity (SISC). A swastika-shaped slot is milled on the top-surface of the SISC to create four quarter-mode resonators. The resonators...

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• DoA Estimation Using Reconfigurable Antennas in Millimiter-Wave Frequency 5G Systems

  Publikacja

  • M. Rzymowski
  • K. Trzebiatowski
  • K. Nyka
  • Ł. Kulas

  - Rok 2019

  To achieve low latency and high throughputs, future 5G systems will have to utilize complex antenna systems able to provide beamforming and direction-of-arrival (DoA) estimation capabilities. Most of the concepts available in the literature rely on analog or digital beamforming, which is well developed and can be used both at a base station and in a user terminal. However, in applications, in which...

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• IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION

  Czasopisma

  ISSN: 0018-926X , eISSN: 1558-2221

• Ultra-Compact Self-Quadruplexing Microfluidically Frequency Reconfigurable Slot Antenna Using Half-Mode SIW

  Publikacja

  • R. K. Barik
  • S. Kozieł

  - AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS - Rok 2024

  In this brief, the design of an ultra-compact self-quadruplexing frequency reconfigurable antenna (SQFRA) utilizing a half-mode substrate-integrated waveguide (HMSIW) and microfluidic channels is discussed. Four HMSIW cavities fed by four microstrip lines and slots are used to construct a highly compact antenna. The microstrip feedings to the HMSIW cavities are applied in such a way that the proposed antenna exhibits self-quadruplexing...

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• Frequency-Reconfigurable Hybrid SIW-Based Self-Diplexing Antenna Using Solid and Liquid Dielectric Loading

  Publikacja

  • M. G. Reddy
  • K. Subramanian
  • N. Pradhan
  • S. Kozieł

  - IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS - Rok 2024

  This paper presents a novel frequencyreconfigurable self-diplexing antenna (SDA) utilizing a hybrid substrate-integrated waveguide (SIW). The antenna comprises a radiating slot, a feeding network, and a hybrid SIW cavity featuring half-mode circular and half-mode rectangular SIW structures. The unique feature of this antenna lies in its fine-tuning capability of each resonant frequency by inserting or injecting solid and liquid...

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• IEEE Antennas and Wireless Propagation Letters

  Czasopisma

  ISSN: 1536-1225 , eISSN: 1548-5757

• Microfluidically Frequency-Reconfigurable Compact Self-Quadruplexing Tunable Antenna with High Isolation Based on Substrate Integrated Waveguide

  Publikacja

  • R. K. Barik
  • S. Kozieł

  - Scientific Reports - Rok 2024

  This communication presents a novel concept of microfluidically frequency-reconfigurable self-quadruplexing tunable antenna for quad-band applications. At the initial design stage, a substrate-integrated square cavity is divided into four unequal quarter-mode cavity resonators by inserting an X-shaped slot on the top surface of the cavity. Applying four 50-ohm microstrip feed-lines to these four quarter-mode cavity resonators enables...

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• IET Microwaves Antennas & Propagation

  Czasopisma

  ISSN: 1751-8725 , eISSN: 1751-8733