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Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
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A V-band high-gain gap waveguide-based slot array antenna with circular polarization.

Ali Sabbaghi Saber1,2, Mohammad Soleimani3, Davood Zarifi4,5

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A novel high-gain circularly polarized slot array antenna utilizing ridge gap waveguide technology achieves 29.2 dBi peak gain in the V-band. This compact antenna is ideal for high-data-rate wireless communication systems.

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Area of Science:

  • Electromagnetics and Wave Propagation
  • Antenna Theory and Design
  • Microwave Engineering

Background:

  • V-band (58-62 GHz) is crucial for high-data-rate wireless communication.
  • Circularly polarized (CP) antennas offer advantages in signal integrity and multipath mitigation.
  • Ridge Gap Waveguide (RGW) technology enables compact and high-performance waveguide structures.

Purpose of the Study:

  • To develop a high-gain, circularly polarized slot array antenna for V-band applications.
  • To leverage RGW technology for a compact and efficient antenna design.
  • To validate the antenna's performance through simulation and experimental measurements.

Main Methods:

  • Design of an asymmetric T-shaped slot as the radiating element.
  • Implementation of a 16x16 planar array with a corporate feed network.
  • Utilization of Ridge Gap Waveguide (RGW) technology.

Main Results:

  • Achieved a peak gain of 29.2 dBi.
  • Obtained a 6.6% impedance bandwidth and 3-dB axial ratio (AR) bandwidth from 58 to 62 GHz.
  • Demonstrated high efficiency up to 90% with excellent agreement between simulated and experimental results.

Conclusions:

  • The developed RGW-based CP slot array antenna meets the requirements for V-band high-data-rate wireless systems.
  • The compact design and high gain make it suitable for millimeter-wave (mmWave) applications.
  • The antenna's performance characteristics are validated, confirming its practical applicability.