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AD 8067 for active antenna applications

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KL7AJ

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KL7AJ

Joined Nov 4, 2008
2,229
I've been working on several advanced designs for broadband active receiving antennas, and found that suitable op amps for this application are hard to find. However, I recently discovered an absolute gem...the Analog Devices AD8067 Fast Fet op amp. It's the first really GOOD R.F. op-amp I've encountered. In the voltage follower mode (what I use for my active antenna design) the input impedance of this is essentially infinite.....far higher than anything I can possibly measure in my lab. The factory spec calls it 1000 Gohm....and I have to take their word for it. The bottom line is, I build a TRUE E-field sampler with this device.....very very cool.

Stay tuned,..

Eric
 
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