How to make a rectangular spiral coil

Hello Every One!
Help Me About Make The Make A Rectangular Spiral Coil
I Wanted To Make 3D Path For Making Wireless Charging Coils Model.
With Thanks.
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I like the method that Carlos used. Just playing around I came up with an alternative. While it's slightly more parametric. It is a little complicated.
1. Start with a simple 3d Sketched coil.
2. A simple thin rectangle is swept along the coil to create the first solid.
3. Then a sketch describing the innermost coil is draw.
4. A tapered extrusion is created from that sketch to create a second solid.
5. The second solid is subtracted from the first.
6. The spiral surface created from that combine is projected back onto a simple 2d sketch.
7. A profile of the wire cross section is swept along that 2d Sketch.
The only real problem with this method is the distance between the coils is a function of the taper angle of the second solid. However, it's not to difficult to do the trig on this.