Skip navigation

RF (Radio Frequency)

4 Posts authored by: kmikemoo
RF (Radio Frequency) Enter Your Project for a chance to win a Spectrum Analyzer for the Most Innovative RF Project! Back to The Project14 homepage Project14 Home Monthly Themes Monthly Theme Poll   Phase 3 of testing antenna radiation patterns.  The intro to this journey is Antenna Radiation. Phase 3 will be to test a 2-element cardioid pattern.  This is formed when two 1/4 wave antennas are placed 1/4 wavelength apart and one is fed 90 degrees out of phase. I want to verify ...
RF (Radio Frequency) Enter Your Project for a chance to win a Spectrum Analyzer for the Most Innovative RF Project! Back to The Project14 homepage Project14 Home Monthly Themes Monthly Theme Poll   Phase 2 of testing antenna radiation patterns.  The intro to this journey is Antenna Radiation. Phase 2 will be to test a 3-element Yagi.  After measuring the 8 compass points (N, NE, E, SE, S, SW, W, NW), I will try to verify the shape of the forward lobe.   The original Ya ...
RF (Radio Frequency) Enter Your Project for a chance to win a Spectrum Analyzer for the Most Innovative RF Project! Back to The Project14 homepage Project14 Home Monthly Themes Monthly Theme Poll   Phase 1 of testing antenna radiation patterns.  The intro to this journey is Antenna Radiation . I plan to share the good, the bad and the ugly in the evolution of execution of this project.  Sometimes the journey is more important than the destination.   The Phase 1 plan is ...
kmikemoo

Antenna Radiation

Posted by kmikemoo Nov 22, 2019
Okay, so it's really antenna radiation pattern testing - but that isn't as catchy. Yes, there is modeling software and, yes, it is accurate.  But nothing really beats a hard measurement.   My objective is to validate antenna radiation patterns.  Because I'm going for pattern, not true power levels, I will use relative values; whatever the meter gives me.  I will focus on the 2 meter band, 144 MHz to 148 MHz. Before anyone freaks out, yes, I am a licensed amateur radio op ...