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Related Concept Videos

Spherical and Cylindrical Capacitor01:26

Spherical and Cylindrical Capacitor

A spherical capacitor consists of two concentric conducting spherical shells of radii R1 (inner shell) and R2 (outer shell). The shells have equal and opposite charges of +Q and −Q, respectively. For an isolated conducting spherical capacitor, the radius of the outer shell can be considered to be infinite.
Conventionally, considering the symmetry, the electric field between the concentric shells of a spherical capacitor is directed radially outward. The magnitude of the field, calculated by...

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Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
11:54

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Published on: March 13, 2017

A tunable spherical cap microfluidic electrically small antenna.

Magnus Jobs1, Klas Hjort, Anders Rydberg

  • 1Microwave Engineering, Department of Engineering Science, Uppsala University, Box 534, The Angstrom Laboratory, Uppsala, 75121, Sweden.

Small (Weinheim an Der Bergstrasse, Germany)
|April 23, 2013
PubMed
Summary
This summary is machine-generated.

A novel microfluidic antenna achieves high efficiency and a wide working band using a simple fabrication method. This 3D electrically small antenna inflates into a hemispherical shape for premium performance.

Keywords:
elastic electronicselectrically small antennamicrofluidic electronicstunable antenna

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Area of Science:

  • Electrical Engineering
  • Materials Science
  • Physics

Background:

  • Electrically small antennas are crucial for miniaturized electronic devices.
  • Developing high-performance antennas with simple fabrication remains a challenge.

Purpose of the Study:

  • To create a highly efficient microfluidic 3D electrically small antenna.
  • To demonstrate a simple and accessible fabrication technique.

Main Methods:

  • Fabrication of a planar microfluidic antenna.
  • Pneumatic inflation of the planar antenna into a hemispherical shape.

Main Results:

  • Successful creation of a 3D microfluidic antenna with a hemispherical form factor.
  • Demonstration of premium performance, including a wide working band and high efficiency.

Conclusions:

  • The developed microfluidic antenna offers a simple fabrication route to high-performance, electrically small antennas.
  • The hemispherical shape is key to achieving wide bandwidth and efficiency.