Hertzian Dipole and finding its orientation

In summary, the conversation discusses the orientation of a dipole in a magnetic field oriented in the x-direction. The question is whether the dipole is oriented along the y-axis or if the vector product needs to be used. The response advises to visualize the dipole at z = a and rotating the magnetic field lines with the dipole, using the right hand grip rule. This visualization can help determine the orientation of the dipole.
  • #1
confusedalot
4
0
Hi,

If I have a magnetic field orientated in the x-direction, a dipole positioned on the z-axis how do I find which direction the dipole is orientated? Is it just as simple as using the right hand grip rule? In which case the dipole is orientated along the y-axis? Or is it more complicated such as finding the vector product?

Cheers,

Paul
 
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  • #2
Draw the x,y, and z axis. Stick a dipole at z = a. Start with dipole orientated in the z direction. The magnetic field lines will be circles centered about the z axis. For the density of such lines see,

http://www.google.com/imgres?q=dipo...44&tbnw=144&start=6&ndsp=6&ved=1t:429,r:4,s:6

and relate electric field strength with magnetic field strength:


Now rotate both the dipole and the magnetic field lines with your imagination. The circles rotate about the dipole.

Does that help?
 

What is a Hertzian Dipole?

A Hertzian Dipole is a theoretical model used to describe the radiation pattern of an antenna. It consists of two identical, infinitely thin wires, separated by a small distance, that are driven by an alternating current.

How is the orientation of a Hertzian Dipole determined?

The orientation of a Hertzian Dipole is determined by the angle between the two wires. This angle is known as the dipole's "tilt angle" and can be adjusted to change the direction of the radiation pattern.

What factors affect the orientation of a Hertzian Dipole?

The orientation of a Hertzian Dipole is primarily affected by the tilt angle between the two wires, as well as the location and placement of the dipole. Other factors such as nearby objects, ground conductivity, and frequency can also have an impact on the orientation.

How is the orientation of a Hertzian Dipole measured?

The orientation of a Hertzian Dipole can be measured using specialized equipment such as a dipole antenna analyzer or a vector network analyzer. These tools can measure the amplitude and phase of the electric and magnetic fields produced by the dipole, which can then be used to calculate the orientation.

Why is it important to determine the orientation of a Hertzian Dipole?

The orientation of a Hertzian Dipole is important because it affects the direction and strength of the emitted electromagnetic radiation. By knowing the orientation, engineers and scientists can optimize the performance of the dipole for specific applications such as wireless communication or radar systems.

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