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9 NeutralAbout antenna_kid
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Advanced Member
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Hi, i tried to send you message but i'm unable to create new because i get message "Your inbox is full. You must delete some messages before you can send any more." I currently have only one old message from you. Replied to your message that was year old.
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Hi, sorry that i write here. Can you answer for my message
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5.8CP_patch.cst
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looks like in whole designs he don't cares impedance
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So do you thin that design is ok ?
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at 1280 - wsvr was 1:1.4
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i forget - thickness of fr3 sheet diameter of circular fr4 is 45 height if folded fr4 is 21.7
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this is folded dipole. isn't it 300 ohm ?
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circle is 0.5mm fr4 and folded fr4 is 0.35mm
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looked, and ?? I've got that white antenna. And few minutes ago dissembled it It's not QFH as i said
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yup, that's it
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Yup, i know QFH. But for me looks like some king evaluation of such antenna made from thin fr4. Ok i've looked at that antenna. It's not qfh. So what a kind of antenna is that ?
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But on this picture there are two different antennas. First one is some kind of QFH antenna and it's for 1.2ghz.
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I saw this guy designs. I don't know what to think about his videoblog. First example - Yagi. Why he don't make any impedance matching ? Does he made Yagi which has 50 ohm ?? I don't think so.
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https://www.researchgate.net/publication/227960359_A_Novel_Approach_of_Measuring_the_Dielectric_Properties_of_PET_Preforms_for_Stretch_Blow_Moulding So PET, PP looks like better choice