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SPICE microstrip dipole antenna model

Started by amal banerjee September 9, 2020
I am experimenting with SPICE microstrip dipole antenna models. The series RLC lumped element model is assumed. For a half-wavelength microstrip dipole antenna, 
the inductance value of the two microstrip segments is 
computed using values for trace width, thickness, substrate thickness and effective dielectric constant. The capacitor value is obtained by using resonant frequency and the computed value of the inductor. The resistor value is that of free space, i.e., 377 Ohm. Impedance matching is via a quarter wave plate transmission line. Is this the correct
procedure ? All hints, suggestions are welcome. Thanks in advance.
On 9/9/2020 6:57 AM, amal banerjee wrote:
> I am experimenting with SPICE microstrip dipole antenna models. The series RLC lumped element model is assumed. For a half-wavelength microstrip dipole antenna, > the inductance value of the two microstrip segments is > computed using values for trace width, thickness, substrate thickness and effective dielectric constant. The capacitor value is obtained by using resonant frequency and the computed value of the inductor. The resistor value is that of free space, i.e., 377 Ohm. Impedance matching is via a quarter wave plate transmission line. Is this the correct > procedure ? All hints, suggestions are welcome. Thanks in advance. >
What is the length of your antenna in wavelengths?
On 9/11/2020 7:31 AM, John S wrote:
> On 9/9/2020 6:57 AM, amal banerjee wrote: >> I am experimenting with SPICE microstrip dipole antenna models. The >> series RLC lumped element model is assumed. For a half-wavelength >> microstrip dipole antenna, >> the inductance value of the two microstrip segments is >> computed using values for trace width, thickness, substrate thickness >> and effective dielectric constant. The capacitor value is obtained by >> using resonant frequency and the computed value of the inductor. The >> resistor value is that of free space, i.e., 377 Ohm. Impedance >> matching is via a quarter wave plate transmission line. Is this the >> correct >> procedure ? All hints, suggestions are welcome. Thanks in advance. >> > > What is the length of your antenna in wavelengths?
Disregard. I see that it is a half-wave and is resonant. You will not have a feed point resistance of 377 ohms. It will be more like 70 ohms.