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No name antenna 27+ dbi

56 posts in this topic
27 minutes ago, Mishka said:

It's interesting to put it into a parabolic dish.

,,, after I rotate the SMA port, I will do that too ... !!!

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On 12/17/2020 at 1:35 PM, Mishka said:

For curiosity I've built the cocoaNEC generated dual-band LPDA...


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Aieee! I used diameter value in the place of radius in my #cocoaNEC code. Stupid me! Realized this when worked on another antenna.

After changing the NEC model to actual wire gauge (S = 2.5 sq.mm, measured D = 1.66 mm, R = 0.83 mm, but NEC code was optimized for R = 1.7 mm) it became exceptionally accurate! At 2400 MHz, both real (see VNA data inside the spoiler) and modeled values differ by just 0.01 for VSWR and 0.3dB for return loss! This also explains impedance mismatch.


Going to rebuild the antenna now.

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On 10/17/2022 at 2:13 PM, Admin said:

LPDA 1,7-2,7 GHz







can this LPDA element be replaced with galvanized so that it is easy to make and make an indentation of 75 ohms

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