Ultra-wideband arrays

Ultra-wideband arrays

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In this chapter, we focus on these modern challenges faced by wideband array designers, and the substantial advancements which have been made over the past 5 years. Initially, we provide a review of UWB array designs to familiarize the reader with the two most common groups of UWB arrays. These are developed with an overview of their basic principles, practical design considerations, and illustrative examples from the literature. Thereafter, we delve into the particular challenges associated with designing these arrays for the emerging applications at millimeter-wave frequencies.

Chapter Contents:

  • 9.1 Review of current UWB capabilities
  • 9.1.1 Tapered slot
  • 9.1.2 Fragmented aperture
  • 9.1.3 Connected and coupled arrays
  • 9.1.4 Material loading
  • 9.2 Basic model of a UWB TCDA and feed
  • 9.2.1 Modeling infinite coupled arrays
  • 9.2.2 Circuit model of the balun
  • 9.3 Considerations for planar UWB arrays
  • 9.3.1 Feed planarization
  • 9.3.2 Material and process selection
  • 9.3.3 Limitations of PCB processing
  • 9.3.4 Surface waves
  • 9.3.5 Cavity resonance
  • 9.4 Planar UWB arrays for millimeter-waves
  • 9.4.1 Development of a three-pin balun
  • 9.4.2 Sample design for 5G frequencies
  • References

Inspec keywords: ultra wideband antennas; millimetre wave antenna arrays

Other keywords: substantial advancements; wideband array designers; UWB array designs; millimeter-wave frequencies; ultra-wideband arrays

Subjects: Single antennas; Antenna arrays

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