R
Rafael A. Penchel
Researcher at Sao Paulo State University
Publications - 28
Citations - 69
Rafael A. Penchel is an academic researcher from Sao Paulo State University. The author has contributed to research in topics: Omnidirectional antenna & Reflector (antenna). The author has an hindex of 5, co-authored 16 publications receiving 51 citations. Previous affiliations of Rafael A. Penchel include Pontifical Catholic University of Rio de Janeiro & Universidade Federal de Minas Gerais.
Papers
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Journal ArticleDOI
Design of Wideband Omnidirectional Dual-Reflector Antennas in Millimeter Waves
TL;DR: In this paper, the electromagnetic performance of omnidirectional dual-reflector antennas designed to operate with a frequency bandwidth larger than 45% (25-40 GHz) was investigated, and a full-wave electromagnetic analysis based on the combination of mode matching and method of moments was employed.
Journal ArticleDOI
Main-Reflector Shaping of Omnidirectional Dual Reflectors Using Local Conic Sections
TL;DR: In this article, the authors presented an alternative method for GO synthesis of dual-reflector antennas suited for omnidirectional coverage. But the method is not suitable for the case of large antenna arrays.
Journal ArticleDOI
GO Shaping of Omnidirectional Dual-Reflector Antennas with Arbitrary Main-Beam Direction in Elevation Plane by Connecting Conic Sections
TL;DR: In this article, an alternative geometrical optics (GO) technique was proposed to synthesize omnidirectional dual-reflector antennas with uniform aperture phase distribution together with an arbitrary main-beam direction for the antenna radiation pattern.
Journal ArticleDOI
Novel Platform for Droplet Detection and Size Measurement Using Microstrip Transmission Lines.
Juliana de Novais Schianti,Ariana L. C. Serrano,Daniel O. Carvalho,Rafael A. Penchel,Julio M. Pinheiro,Mário R. Gongora-Rubio,Gustavo P. Rehder +6 more
TL;DR: A novel platform for detecting as well as measuring the size of individual droplets in microfluidic channels using microstrip transmission lines based on low temperature co-fired ceramic, which makes it more compatible with Radiofrequency (RF) and microwave technology than platforms used in previous works.
Proceedings Article
An omnidirectional dual-reflector antenna with a shaped main reflector described by local conic sections
TL;DR: In this article, dual-reflector antennas for omnidirectional coverage were synthesized under GO principles, where the subreflector is generated by a single conic section and the main reflector is constructed by a series of local conic sections.