Difference between revisions of "Turnstile Antenna"

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(Whiteboard)
 
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[[File:Turnstile Antenna.png|right|thumb|LED_Matrix_Display]]
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[[File:Turnstile Antenna.png|right|thumb|Turnstile Antenna]]
 
=Turnstile Antenna for VHF=
 
=Turnstile Antenna for VHF=
 
==Description==
 
==Description==
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==Milestones / ToDo==
 
==Milestones / ToDo==
 
* Come up with a proper design
 
* Come up with a proper design
* Calculate transmisstion stub
+
* Calculate delay line stub
 
==Photos==
 
==Photos==
 
==Resources==
 
==Resources==

Latest revision as of 12:23, 3 July 2013

File:Turnstile Antenna.png
Turnstile Antenna

Turnstile Antenna for VHF

Description

A simple turnstile antenna for satellite VHF reception.

Log

Specifications

  • Polarization: Right-handed circular
  • Frequency: ~137MHz
  • Impedance: 75Ω

Materials

  • 6mm dia. threaded rods
  • PVC tubing
  • RG-59 cable

Milestones / ToDo

  • Come up with a proper design
  • Calculate delay line stub

Photos

Resources

Team

Whiteboard

Circular polarization notes:
  * Point of view is the source and '''not'' the receiver.
  * To achive this, the "delayed" dipole should be the one ''ahead'' of the directly fed,
    when viewing from the bottom of the antenna and moving clockwise.