David S. Cabral

ORCID: 0000-0002-8790-6010
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About
Contact & Profiles
Research Areas
  • Antenna Design and Analysis
  • Advancements in PLL and VCO Technologies
  • Structural Engineering and Vibration Analysis
  • Ultra-Wideband Communications Technology
  • Concrete Corrosion and Durability
  • Semiconductor Lasers and Optical Devices
  • Advanced Antenna and Metasurface Technologies
  • Analog and Mixed-Signal Circuit Design
  • Microwave Engineering and Waveguides
  • Energy Harvesting in Wireless Networks

Universidade Estadual de Campinas (UNICAMP)
2017

This paper presents an Antipodal Vivaldi Antenna (AVA) design, focusing on its constructional aspects. The main features analysed are the connector attachment structure and introduction of a polytetrafluoroethylene (PTFE) part that supports antenna laminate. Issues related to dielectric penetration by milling tools also addressed. proposed AVA was manufactured through low-cost prototyping process tested, achieving operational bandwidth from 5 18 GHz for reflection coefficient less than −10...

10.1590/2179-10742021v20i41270 article EN cc-by Journal of Microwaves Optoelectronics and Electromagnetic Applications 2021-11-15

This paper presents the design of a compact Antipodal Vivaldi Antenna (AVA) with good performance for ultra-wideband (UWB) applications. The miniaturized AVA - 40 × 0.8 mm, its balanced feed structure and mechanical ground support are described in detail. simulated results show that proposed covers bandwidth ranging from 4.73 to more than 22 GHz peak gain above 5 dBi highest frequencies. A prototype was built return loss measured. designed antenna is utilized direction finding (DF) system...

10.1109/icuwb.2017.8250965 article EN 2017-09-01
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