patch antenna was my final year project in 2010 at Houari Boumedien University in Algeria (Modeling of a patch antenna network using the iterative method)
I think this video is really underappreciated. I built this antenna following all the details and I obtained a very good antenna. I even measured it with a NanoVNA and it is spot on channel 3. It was one of the easiest 2.4GHz antennas I've built. I must admit that the only question I have is regarding the length of the inset feedline. Why is that 15.6mm long? I know that is twice the 7.8mm, but why?
hello Andrew, from Medellin, Antioquia, Colombia. if you mind to correct the back reflector 75mm 18mm to 75mm 75mm. thanks to share your knowledgements. Nice day
How do you think the performance of this build would change if instead of the square panels, each panel wrapped around onto itself so there was an inner ring and outter ring but fed the ssme way.
Can you make video going more detail about feed taps, and is there some formula what those lengths should be? Also how to make defective ground structure. Does the spot and shape of those make much difference? I tried to find info about them, but most research papers. Only cover other dimensions, but not the feed tap gap and DGS.
I tend to see a patch antenna as a glorified capacitor. If I measure the VSWR, you'd think it would higher than 1:1 due to this capacitance, but it's not. So I'm a bit confused.
Hi Andrew, question... When you say about getting the nano test equipment to refine the ant could you perhaps show how to refine, give several examples please as this is something we dont see anywhere! Kind regards Chris A
Hi Andrew - I like this design, there is something very pleasing about its simplicity. If you were to array 4 of these in a row, would the pitch be about the same as the width? I am thinking to make a corporate feed on microstrip, on a 2 layer FR4 PCB, and the air patch elements would be mounted on the ground plane side, fed thru vias. What do you think?
Have you seen the Mikrotik MantBox 52? They are dual band and are made with gutter cans. If you have an Email I'll send you a photo but I recommend buying one for testing. Really interesting. I use it for precision farming.
What sort or gain does it have and how do you determine vertical or horizontal polarisation when its square and symmetrical, I'd like to try one for FPV and it looks more compact than a 2.4ghz double bi quad, how do the two compare? I'm looking for the most directional and high gain on 2.4ghz for FPV.
@@andrewmcneil Why 4 when air is much closer to 1? The supports would modify this a little but only by a small amount. 4 would be the value used for fiberglass pcb material. Have I missed something here? Great video by the way!
@@LotosAndEarth doesn't really work for my application as I want to put it into a weatherproof box together with the modem. A biquaq option that Andrew is working on now (recent video) is closed to what I am looking for.
Yes, but a different thing altogether than this. It would look like two triangles of metal, fed between two tips. It would look like a bow-tie. Get on the googler and look up `wide band dipole` that will give you some ideas. You can have flat SWR but the gain will be much lower than a dedicated frequency antenna.
How would you go about making one for both 2.4 and 5 GHz? Make a smaller square, put it in front of the 2.4 panel?how is the sma cable connected in this case?
They must be plastic, (bolt and support.) Nylon would be the easiest to find and would work well. If you want to squeeze the last 0.01 db of gain, then teflon or polyethylene would be the choice.
Hi Andrew, the online calculator doesn’t mention the coax connection strip. The length, width or the amount to cut in. I wish to make an antenna for 1278MHz. .
No it doesn’t the design of the strip feed is a whole other area of RF. That’s why in the video I say that starting with 1/8 wavelength is a good place to start.
@@cosmefulanito5933 It's a network analyzer to be more precise. By the looks of it a scalar version (atleast like he uses it). However, a setup video would still be pretty interesting. Especially since a network analyzer needs to be calibrated for each measurement with known open, short and load standards.
patch antenna was my final year project in 2010 at Houari Boumedien University in Algeria (Modeling of a patch antenna network using the iterative method)
I think this video is really underappreciated. I built this antenna following all the details and I obtained a very good antenna. I even measured it with a NanoVNA and it is spot on channel 3. It was one of the easiest 2.4GHz antennas I've built. I must admit that the only question I have is regarding the length of the inset feedline. Why is that 15.6mm long? I know that is twice the 7.8mm, but why?
for 50 Ohm i suppose not for 75 ohm cable
Can you be more specific?? Are you considering wire Ohms to build antenna
@@MQM360 to match the impendance of antenna to the cable
Yeah!!!...More Andrew RF video's!!!
You're my Idol my man ;)
~Whirled Peas
Glad you enjoy them 😀
@@andrewmcneil
Hey Andrew, I'm just curious; can you add a parasitic element on a panel antenna.?
what advantages does a panel antenna have over other types? wouldn't a dipole in front of a reflector work just as well?
you got a link to the threaded connectors ? .. thanks
hello Andrew, from Medellin, Antioquia, Colombia. if you mind to correct the back reflector 75mm 18mm to 75mm 75mm. thanks to share your knowledgements. Nice day
How do you think the performance of this build would change if instead of the square panels, each panel wrapped around onto itself so there was an inner ring and outter ring but fed the ssme way.
have you ordered a nanoVNA yet??
Im intrested in making my own indoor panel antenna for tv. Is it possible to use this style of antenna to recieve tv channel signals?
Can you make video going more detail about feed taps, and is there some formula what those lengths should be? Also how to make defective ground structure. Does the spot and shape of those make much difference? I tried to find info about them, but most research papers. Only cover other dimensions, but not the feed tap gap and DGS.
I tend to see a patch antenna as a glorified capacitor. If I measure the VSWR, you'd think it would higher than 1:1 due to this capacitance, but it's not. So I'm a bit confused.
Hi Andrew, question... When you say about getting the nano test equipment to refine the ant could you perhaps show how to refine, give several examples please as this is something we dont see anywhere!
Kind regards Chris A
Hi Andrew - I like this design, there is something very pleasing about its simplicity. If you were to array 4 of these in a row, would the pitch be about the same as the width? I am thinking to make a corporate feed on microstrip, on a 2 layer FR4 PCB, and the air patch elements would be mounted on the ground plane side, fed thru vias. What do you think?
Thank you Andrew.
Please, could you make batwing antenna and make your comments on its performance.
Have you seen the Mikrotik MantBox 52? They are dual band and are made with gutter cans. If you have an Email I'll send you a photo but I recommend buying one for testing. Really interesting.
I use it for precision farming.
What sort or gain does it have and how do you determine vertical or horizontal polarisation when its square and symmetrical, I'd like to try one for FPV and it looks more compact than a 2.4ghz double bi quad, how do the two compare?
I'm looking for the most directional and high gain on 2.4ghz for FPV.
well, you can basically see how he positioned the antenna.
What do you think of the 2.4ghz curtain antenna designs?
When using the on-line calculator, what value to you enter for the Dielectric Constant for this design?
4
@@andrewmcneil Why 4 when air is much closer to 1? The supports would modify this a little but only by a small amount. 4 would be the value used for fiberglass pcb material. Have I missed something here? Great video by the way!
Hi, good video, im making this antenna for university.
How thick is the brass sheet?
Nice video ! Are the spacers made of insulating material? How do you calculate the size of the reflector? Thank you
They are black nylon I believe, so yes, an insulator.
Is it possible to make it a wideband antenna? I am looking for something directional that would cover 4G bands from 800 MHz to 2.6 GHz
It would be awesome
try heelical or other wide band antennas
@@LotosAndEarth doesn't really work for my application as I want to put it into a weatherproof box together with the modem. A biquaq option that Andrew is working on now (recent video) is closed to what I am looking for.
Yes, but a different thing altogether than this. It would look like two triangles of metal, fed between two tips. It would look like a bow-tie. Get on the googler and look up `wide band dipole` that will give you some ideas. You can have flat SWR but the gain will be much lower than a dedicated frequency antenna.
How would you go about making one for both 2.4 and 5 GHz? Make a smaller square, put it in front of the 2.4 panel?how is the sma cable connected in this case?
I have seen them stacked but never tested or build one myself.
@@andrewmcneil that'd be nice to see in a video, especially for LTE purposes :)
The bolt you're use in this video are plastic or metal
They must be plastic, (bolt and support.) Nylon would be the easiest to find and would work well. If you want to squeeze the last 0.01 db of gain, then teflon or polyethylene would be the choice.
@@TheTemporalAnomaly i thought it's connected each other brass plate
@@faiziali3372 No, the two brass plates are insulated from each other using plastic bolts and spacers.
Hi Andrew, the online calculator doesn’t mention the coax connection strip. The length, width or the amount to cut in. I wish to make an antenna for 1278MHz.
.
No it doesn’t the design of the strip feed is a whole other area of RF. That’s why in the video I say that starting with 1/8 wavelength is a good place to start.
Good job sir ...keep it ...
How do you setup the antenna-osciloscope to see it's efficiency?
Is not an ociloscope. It's a spectrum analyzer.
@@cosmefulanito5933 It's a network analyzer to be more precise. By the looks of it a scalar version (atleast like he uses it).
However, a setup video would still be pretty interesting.
Especially since a network analyzer needs to be calibrated for each measurement with known open, short and load standards.
is it possible to combine two patch panel antennas together to say tune one for 2.4 and another for 5Ghz?
Somebody as just asked the same question. I have read about stacked panels before but I have never made one. Maybe I will give it a go. 😀
if this works for 2.4GHz spectrum, will it work for the 868 MHz too or we have to change some things ?
You would have to change it's size
@@andrewmcneil ok, thanks.. but any formula/hint how to calculate the size ?
@@RotOli12 Here you go just use the dielectric constant of air which is 1 www.pasternack.com/t-calculator-microstrip-ant.aspx
@@andrewmcneil wow... thanks... and the dielectric height is the E from the little drawing? ie, the distance between the 2 plates ?
@@RotOli12 yep if you play around with the height it is interesting how much this effects the size of the element.
БОЛЬШОЕ ВАМ СПАСИБО !!!
No need for the blasting music.
These UA-camrs need to dumb down their videos a bit to get those extra views.
Talk more loudly or turn down the music.
Your probably right
Show of hands: Who else is watching antennas at 7:22 UTC?
(me)
73 de N2NLQ
😁