antenna_kid

Can it be wound from wire instead stripe ? What dimensions for 2.4Ghz ?

Looking for ideas for two antennas with gain ove 10 dbi - one for 868 Mhz and second one for 750Mhz. Any suggestions ?

any dimensions for that bat wing ? You have right - 1.4 is not bad at 750 What impedace does it has at 868 and 750 ? GOt question, this tube diameter is critical. Asking beczuse will be quite hard to find 30mm brass tube. Brass rod is quite expensive for that diameter.

Hi, excelent :)thank you. thickness of elements is the same (2mm) ? Can it be 1.6mm. Asking because have double sided FR4 laminate. It will be easier to make them (cut on CNC). Do you have also such design for 868 Mhz ? Will try make them both.

yes, but its still for 75 ohm. need 50 ohm version.

Ok, how scale it to 750 mhz and for 50 ohm ?

Searched forum, and this looks like this Yagi antennas. But made form FR4 laminate. THis is just example, picture took form other topic. AS I see this version is for 2.4

the first one is for 2.4 ghz.

As in begining. still interested in this design. Looks compact as for 915. For 750 will be biggeer but can still accept that. Eventually, if you have calculations for PCB Yagi antenna for such frequency I want to test aslo FR4 Yagi but for 868 and 915Mhz.

Thanks, but looks like has quite big footprint. this one i've provided is quite small - 200mm diameter. Generally i could sacriface those 10 dbi over smaller footprint. Clanon. So such design but linear and for 750 ? Can someone also simulate Yagi on FR4 for 750 ?

Any dimensions for that proposal ? Generally dont looking for broadbang. At this moment looking for two antennas with higher gain: One for 700MHZ and second for 750mhz. Easy to manufacture on CNC from FR4 laminate.

it looks like patch with parasitic element, and looks like easy tu manufacture because there are just only 3 round elements.

I have small cnc and spare PCB blanks so it's doable.

Found it some time ago. Feed point is on side of the middle element. This is also for 2.4 ghz wersion 24 patch.webp

this design looks interesting:

If it will be smaller then it will be additional good feature

Ok, so any suggestions for something quite small and for 750Mhz ? dbi over 10.

Can it be redesigned for 868 MHZ and 750Mhz ? Asking because fabrication looks quite easy and gain is nice.

Hi, I looking for good materials to construct antenna. I know that PTFE is best choice. But that material isn't cheap and in my case, most important thing - isn't easy to work with it on CNC (specially thin plates 3mm to 6mm). It's to soft, it's not easy to mount on table and it's not easy to glue (I know that there are glues with primers). What about PC, PMMA, PA, PP and others. I've found that PET is good choice - is that true ?

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.

Hi, sorry that i write here. Can you answer for my message

5.8CP_patch.cst

looks like in whole designs he don't cares impedance

So do you thin that design is ok ?

at 1280 - wsvr was 1:1.4