4G Biquad
ฝัง
- เผยแพร่เมื่อ 11 ธ.ค. 2021
- In this video I build a biquad antenna for 4G. you can use this as a directional antenna or like in the video as a dish feed. This is a first build and as it stands, I am happy with how it turned out but stay tuned as I am already working on how we can make it even better!
Help support this channel on Patreon: www.patreon.com/user?u=20857330
Facebook group: / 1313077415524264
Want a cantenna: tinyurl.com/4duwr3kn
PDF Measurements: drive.google.com/file/d/1-07s... - วิทยาศาสตร์และเทคโนโลยี
Wow! That's so nice, Hats off for your efforts Thank you so much 😊🙏🙏
It's my pleasure
Excellent Andrew. If you could cover how it could be used practically in poor 4G reception areas, even better!!
Insanely impressive speed test :-)
Glad you liked it!
Measuring tool as keyring for antenna makers , , good 👌
Greetings from Philippines! ! !
Im newbie with this kind of sci-experiment but i have a little knowledge about wifi antenna, Your content helps me to understand and learn more, and that is why I really really thank you. I already tried this design and it works pretty well even without satellite disk, I only used a single biquad and not a pair I repaint in it to prevent corrosion same to yours. If I finish this one I put your name in it as big as elepant.
"Salamat po" - a respectfully thanks Filipino words
pre nilagyan mo ng dish reflector? ano speedtest result mo sa biquad?
Very impressed and particularly with the seed tests!
Thank you!
Good job sir ...keep it ...
Thank you, I will
Hi Andrew, great video thank you! I'm in the process of gathering the materials to give this a shot myself. First time trying something like this so I'm excited to see the results.
I actually have a line of sight to the tower from my house, so my reception is already decent, I just want to see if I can make it go vrmm vrooom.
I have a couple of questions if you get a moment please?
1) It looks to my eyes like you've used some sort of sealant type thing where the N-Connector is inserted into the aluminium plate? Or am I imagining that?
2)Does weather/water impact on the performance of an antenna like this? I mean in terms of water/rain on the antenna itself (rather than atmospheric conditions in a broader sense)
3)Where do you purchase your materials?
4)In the video you mention possibly fine tuning the next iteration of this build, I wonder did you ever get around to doing that?
Thanks again for sharing your knowledge and skills. People like yourself are the best thing about youtube. (and interspecies animal friendship videos obviously) Best of luck!
Those speed tests are amazing! Great work!!!
I don't quite understand why you used two antennas? Is it for upload and download?
Hi mate just wondering what dimensions you would use if you want only the 1800mhz band? Thanks mate good easy to understand videos keep it up.
Hey Andrew, thanks for this. Have you by any chance seen what kind of response it gets on lower bands, 700-900mhz and most importantly at around 3500mhz that is used for 5G? I'm very interested to see future developements on this, for example a dual biquad with even more different element lengths, or maybe even a yagi biquad based on this concept. I'm currently "converting" this as a pcb for easier "mass" production.
Thanks a lot for this video, it's great! I wonder if you'd be able to post the impedance of this antenna :D If it's not possible to post the impedance for it's rated frequencies, would it be safe to assume that this would work in a 50ohm application?
Very interesting . And now you have set my gray matter running . As being on mobile internet (van life) and in UK and ham user trying to understand biquad .. is each side a quarter wave length ,and is the stand off an eighth wave length ? What is the angle of the path ?
Very nice video sir thank you so much for this video. Make one video for bolton parabolic antenna review to thank you
We will try
Thank you for doing this sir, i hope you will keep experimenting with this 4g antenna...
I am confused at which back reflector is for 1800 and whic one is for 2600..
And any idea what we can use instead of copper ring we used
Some very nice results there wow. I've been thinking of doing almost exactly this using a Biquad with a dish. Also just trying a bog standard 4g dongle on a dish running a long USB cable could be interesting too. Though remote the house is in direct LOS with a 4G+ tower only a few miles away. I also know the exact band it is using so I am even tempted to try a custom cantenna with a satellite.
I wish I had put the RSRP, RSRQ and SINR before and after the antenna. How much is the antenna gain with these variables? Thank you for your great effort
great job. but i think you miss something important which is. sat dish do focus the sginal into single focus point where you can get the most power. i have same project but one with cantenna with two feeder 90 degree to each other and one with two biquad on top each other also 90 degree to each other.. cantenna perform much better but biquad has wider frequency range.. i hope you do the cantenna project ❤️
Thanks for the tips!
Could we use stripped copper wire core from 75ohm coax tv cable instead of brazing rod?
Man, thats about as much of a boost if not more than i get using 2 Bolton "Long Ranger" Parabolic antennas. I may have to try this! Do you think it would work better with two separate dishes for MIMO?
Great video. The rectangular nature is a good idea for splitting between frequencies. Australian regional 4G runs between 723MHz and 776MHz (for better long distance propogation). This makes for a painfully large biquad so have not tried making one. Sticking to yagi for now. Getting good enough bandwidth for the upper and lower is tricky though. Any ideas? Log periodic maybe?
Agreed Biquad would be way to big. A log is an option but they perform much the same as a Yagi.
@@andrewmcneil Agree. Maybe easier to do both frequencies on a log tho?
@@SimonShaws Your right
hi mate, i am wanting to build a 4x4 MIMO antenna for my modem, I figure I need 2x 4G and 2x 5G antennas. My 4G Frequencies are 700MHz & 1800MHz. My 5G Frequencies are 850MHz & 3500MHz. How are the calculations done to build an antenna like this?
Can anybody please tell me what are the exact measurements of the reflector plates? They're not mentioned anywhere, neither in the PDF, nor in the video/description. The PDF's size/ratio isn't exact A4 so I can't tell what the size is by importing it to an A4 canvas in an image editing program.
Could you please explain how you could do better as you say in the video while testing.
It would be great to know how improvments can be made, for example, more precise measurments, diffrent material instead of the brass rod, etc etc?
Also are you still making videos?
Thanks in advance, from an ex Brit army Rad-op
I’m inspired
Hi Andrew, how are you? Your videos, as always, are the most technical and enlightening I've seen, since I've been following you. I would be very grateful if you could tell me the correct distance to place the reflector on the 2.4ghz and 5.8ghz antenna. I saw some articles that differed a lot on this issue. And I looked in some of your videos and I didn't find it, but if you have any videos or articles that might help me I would be very grateful. Thanks for sharing so much knowledge.
Wow, thank you! for a biquad 14 to16 mm @2.4 and 6 to 7.5 @5.8.
@@andrewmcneilThanks again for sharing so much technical knowledge.
Tou are the man...
@@andrewmcneil I use an omnidirectional toothpick on 2.4g and a 3-layer square patch on the 5.8g can I follow these same measurements? Or in that case should I use another measure of distance from the reflectors?
Hello Mr Macneil,
I like your videos about LTE and 5G.
I have a satellite dish with a 2x2 mimo kroks KIP9 1700-2700 antenna and a M2 4x4 mimo modem.
Is signal lost when placing the 2 biquads in that position with respect to the focus of the parabolic? .
It is to think if placing 2 antennas on the satellite dish, 2x2 mimo and doing 4x4 mimo in the modem will work with your hack.
On the other hand, I think that when testing with 4G router and antennas, show the signal levels received by the router with internal antennas and external antennas if possible, there you will see their gain and it will not depend on the speed test that in cases of congestion the tower can be bad and does not show the potential of your antenna. (translate using google translate spanish-english, sorry for mistakes if any).
Great and a helpful tutorial sir. What is the maximum distance it supports from the cellsite? I'll give it a try
Distance will depend on a lot of factors including line of sight and the weather conditions.
Andrew, I'm curious to know where you got your measurements from? Calculators online suggest a wirelength of 4.16cm for 1800mhz bands for a biquad. Your measurements suggest 2200mhz and 2500mhz so I can't see how this design is useful for 1800mhz?
With this one I was aiming for 2 to 2.2 GHz and 2.7 GHz the next one I will be trying to incorporate 1700 to 1800 MHz into the design and hoping for a harmonic around 800 MHz. calculators are fine for very basic designs and for giving you a ballpark starting point but apart from that they are pretty limited.
Did you try these on a dish at all?
Please. Make a video with 60cm antena
Cordial greetings I speak to you from Colombia sorry I want to know how rover antennas are made rtk gnss antennas I thank you if you have a project in this regard
please make new updated version
please make the new best you can do 4g lte even maybe 5g.
Hi Andrew. Great video . I have an archer m200 4g router and I'm on the 02 network. I live in a rural area and signal strength through the router antennas is sporadic at best. Can you buy these antennas online.?
you can buy lpda antenna and connect with your router
Thank you for video.
You are welcome
Hi Andrew,
I'm thinking of building such an antenna, but I've read somewhere that connecting coax feed directly to the reflector is an abomination, and I should only use proper connector like You did here. What are the tolerances with the feed, and the distance between connections to each lobes of the biquad? What is the best orientation for the antennas at the ground level transmission - is pattern matters - yours are skewed into each other a bit, what is the reason and how to optimize this?
Hope that gets to You, thanks in advance!
Mark
I don’t know where you read that! Using a connector gives you options for the future also it is much easier to maintain. But connectors add expense, small these days though with eBay and also adds loss. A small amount of loss granted but loss all the same.
Hi Andrew
You show a template in the video, is this available to download somewhere please?
Thanks
Andrew
inthe description
Now I really want to build one of these BUT what about 700Mhz??? they are removing others higher frequency transceivers in AU regional areas for the 700Mhz.
A biquad would be a bit big at 700
@@andrewmcneil Big or not, thats all we have with these Natzi's here in OZ, taking choice out of the equation.
@@OffGridAussiePrepper uh, those nazis are switching to 700MHz because it travels much longer ranges than the higher frequencies. Its opening up far more mobile range coverage. It's an improvement. Use a omni or yagi instead.
@@SimonShaws Natzi's is correct, Australia is a Natzi Freemason run country and the population is oblivious to it and are totally WOKE BRAINWASHED. I am using an omni directional antenna 6km away from the transmitter and it sux, 3 bars out of 5 is NOT good enough for me and I am not going to spend 500$ or more on a Yagi as we r the highest taxed country in the world, I am sure i can build one but I dont have them testers so i have to work off a specific measured diagram and wing it.
I’m also on the upper 700mhz band where I live. Because these low frequency bands are becoming more rare it can be difficult to find good antennas, which is why I’m going to build my own. So far it seems like a nice big yagi is my best bet. I’m glad that the 700mhz band is available here though because it has good range and object penetration.
Cordial greetings you don't have a Telegram group
Hello. Do you have a project for a 5.8ghz biquad? I need it for FPV flight with drones. thank you.
Here
th-cam.com/video/AsneuwXNLbw/w-d-xo.html&ab_channel=andrewmcneil and here
th-cam.com/video/Iqin9aS_C6E/w-d-xo.html&ab_channel=andrewmcneil
@@andrewmcneil Thank you very much. I've been following her for a long time but I hadn't seen these videos yet. Thanks again.
can I use copper rather brass
yes
Thank you soo much !!
I live in rural area in germany and also it is a valley . And we are suffering for LTE signal . Inside the house the signal reception is 0 . And they are already talking about 5G 😂. External antennas only solution . So i can try this . Thank you 😊
How about 2 cantennas with monopole inside or 1 cantenna with 2 crossed monopoles (with satellite dish ) ??
two crossed monopoles don't work well in a cantenna but a two single cantennas will give you the range.
Doesn't it short circuit main driven element and the reflector? :O
Yes
I thought that was a problem because I remember you mentioned in the wifi gun video that it wasn't much of an antenna when it short circuited.
@@IreshDissanayakaM Shorted designs do work and the biquad is one that does. The way the wifi gun works though it does not. I should have been clearer in the video but I do all my videos on the fly and never script a video as I hate scripted videos. The VSWR of the original wifi gun was also through the roof making is a very poor transmitting antenna but that never made it into the video.
It's always great to know more. This made things clearer. I appreciate it. thank you!
Andrew why you did stopped uploading video. Need something for you as a teach. Hop you will back to us with more videos. ❤️ From Bangladesh.
Thanks for your response 👍
I really need something new antenna which we can make put together with 4g in a pvc waterproof box ..make 4g outdoor router to get best signal and speed i appreciate your this antenna and waiting for more improvement in this or if there is something high gain in 700-900mhz and 1800- 2300 and 2500- 2700 need we are in India promoting 4g for rural area to get best signal speed using external antennas with sim based router we had a best outdoor antenna with router if u help us on that antenna we are very much thank ful for that the model of that anteena with router is mikrotik sxt lte6
700-900mhz is a big biquad. Do you know what frequency you are on when you CAN get signal?
@@SimonShaws in india we have 850 and 900 mhz band 8 and band 5 we need to achieve
مرحبآ
انا من المعجبين بفيديوهاتك الجميلة والمفضلة لدي بسبب ضعف النت عندي
لقد طبقت بعض النماذج ولكن النتيجة كانت سيئة. لا اعرف السبب. افضل نموذج فعال حاليآ وجدته على يوتيوب هو بسيط جدآ لكن به بعض المشاكل احتاج ان تساعدني لمعرفة الخطأ الذي يسبب هذه المشكلة
Can i contact you sir?