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What is self resonance?
The self resonant frequency of an inductor is the frequency at which the parasitic capacitance of the inductor resonates with the ideal inductance of the inductor resulting in an extremely high impedance. The point where this happens is called the self resonant frequency.
What is resonance in antenna?
A radio antenna is a form of tuned circuit consisting of inductance and capacitance, and as a result it has a resonant frequency. This is the frequency where the capacitive and inductive reactances cancel each other out. Antennas for short wave applications are larger still. …
When does a circular loop become self resonant?
However, as the loop conductor perimeter becomes longer, the phase shift between induced voltage and the current that gives rise to it changes. At a certain length, generally held for circular loops to be about 1/3 wavelength, the loop becomes “self resonant”. A self-resonant antenna might be thought of as being “optimally efficient”.
Which is the resonance frequency of an antenna?
Antenna resonance A radio antenna is a form of tuned circuit consisting of inductance and capacitance, and as a result it has a resonant frequency. This is the frequency where the capacitive and inductive reactances cancel each other out.
How are loop antennas used for transmission and reception?
Large loop antennas have a perimeter close to one wavelength of the operating frequency, which makes them self- resonant at that frequency. These antennas are used for both transmission and reception.
What is the wavelength of a loop antenna?
A loop antenna with approximately one wavelength perimeter that resonated in air at 2.58 GHz was mounted over a stack of pc boards on which were etched groups of split ring resonators as shown in Fig. 3.12. The resonant frequency with the metamaterial substrate was reduced by 23 percent, which indicates the size reduction.