What is Rf: Definition and 255 Discussions

Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around 20 kHz to around 300 GHz. This is roughly between the upper limit of audio frequencies and the lower limit of infrared frequencies; these are the frequencies at which energy from an oscillating current can radiate off a conductor into space as radio waves. Different sources specify different upper and lower bounds for the frequency range.

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  1. R

    Can a Single Probe Accurately Measure RF Power on Multilayered PCBs?

    I often use Spectrum Analyzers to probe RF signal powers at different points on multilayered PCBs. These probes have a single conductor (or at least only require a single conductor). Placing the probe on a signal trace on the top exposed surface of the PCBs instantly shows us the RF power at...
  2. M

    Certifying Product with Capacitors & Resistors: RF Disturbance Test?

    I have to certify one of my product which used in industrial pannel boards for EMI/EMC this contains only capacitors and resistors. can anybody help me in what all teas i have to do for this? and one more thing is it necessary to do RF disturbance test on this product? and What is RF...
  3. K

    RF Blocking Solutions for Invisible Dog Fences

    I have a question about radio frequency blocking. I recently purchased one of those invisible dog fences to keep the new puppy from becoming roadkill. Pretty basic install except when it came to "blanking" out an area for the dog to go into and out of the area. The instructions said to run two...
  4. Ivan Seeking

    Reflections on RF - How did it happen?

    Here is a real brain teaser that has always baffled me. Years ago, back in the bad old pre-cable days of cheesy TV antennas, I was watching something of interest and, since I was working around the house, I had both of our TV sets on the same channel for optimum viewing from any location. I...
  5. C

    The Potential: Harnessing Energy from RF Conversion in Antennas

    Since RF radiates from a antenna when you key up the transmitter.and since RF is hypothesized to be photons that account for the electromagnetic particle that tranfers EM waves.when a current hits the antenna,what if electrons since they flow into the antenna,are converted into photons,and...
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