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Log Periodic Tooth Antenna

 
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abti



Joined: 07 Jul 2004
Posts: 19


Post13 Jul 2004 15:17   Log Periodic Tooth Antenna

i have to simulate a log periodic triangular tooth antenna. The reference i have was designed to work for a frequency range from 3 to 11.6GHz. i have to simulate an antenna for a range from 100 to 300GHZ. obviously i have to scale down the geometry but which variables exactly should i change so that the result is the same at the new frequency range? should i just scale down the radii and leave all the angles as well as the tao and sigma the same ?

thanks
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flatulent



Joined: 19 Jul 2002
Posts: 4856
Helped: 292
Location: Middle Earth


Post13 Jul 2004 15:19   Re: Log Periodic Tooth Antenna

Since the antenna is planar, just scale dimensions on the x and y direction all by the same value as the old/new frequency ratio. You can visualize this as a 35 mm camera slide projector making the image on a screen. Moving the projector further away and refocusing will make the image larger.
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