Directional Yagi

UserPreferences

1. Plastic Rod with Pins design
2. Stamp design
3. Barbie's TV Antenna

Plastic Rod with Pins design

Want to make your very own? It's quite easy. Exact dimensions and other info at http://www.andrewhakman.dhs.org/yagi

I'd put the whole thing here, but I already made a little webpage, and it's easier to link rather than recreate.

Here's a small preview of the detailed specs at my site.

Here is the data file and computed radiation pattern from W9CF's java app:

45.8 #length 6 
45.8 #length 7 
45.8 #length 8 
45.8 #length 9 
45.8 #length 10 
45.8 #length 11 
44.2 #length 12 
44.2 #length 13 
44.2 #length 14 
44.2 #length 15 
44.2 #length 16 
0.0 #position 1 
15.65 #position 2 
37.0 #position 3 
62.5 #position 4 
89.7 #position 5 
123.4 #position 6 
150.4 #position 7 
177.4 #position 8 
204.4 #position 9 
231.4 #position 10 
258.4 #position 11 
285.4 #position 12 
312.4 #position 13 
339.4 #position 14 
366.4 #position 15 
393.4 #position 16 
2437.0 #frequency 

If you wish to tune this for different element diameter (e.g. 2.03 mm for 12AWG copper wire), or optimize for a specific wireless channel, the W9CF yagi modeler will help you. The W9CF computed impedance (Zin) at the driving element is not corrected for the folded dipole driver; YMMV.

Stamp design

Barbie's TV Antenna

The pictured one is 15dbi, it's about 3ft long and will cover a pretty good distance. What makes this one interesting is the design. it's dead simple to implement and doesn't require punching.

Without Mounting Kit.

Really simple design. uses a bolt, some aluminum piping and washers. end pieces are fit to the enclosure.

The reflector is about the size of a soup can with an N Female flushmount and some extra copper or brass piping.

piping doesn't actually touch the bolt!

Nice N connector eh?

You can find the dimensions for this antenna here: http://seattlewireless.net/docs/