I just learned about antennas and I bought a parabolic antenna, now I'm starting to make my own because I've become interested in the last antenna. I watched your video. I really like all your videos.👍 Done subscribed Love from malaysia
Hello what kind of elements are going to use with parabolic reflector ?? If it is LTE it should support MIMO also . I am also looking for DIY idea for parabolic feeder.
Always enjoyable to watch. I’d guess you are looking at an antenna for 3G UMTS (WCDMA) band 1, smaller one possibly additional bandwidth to combine GSM 1800. Don’t see the combiner much any more, usually each dipole is driven from a different TX path for MIMO purposes.
Nice video. what I noticed is that the fiberglass shell makes quite a difference in the frequency response, so they might be pretty similar when assembled. Another interesting point is that they used 35 and 75 ohm coax to build transmission line transformers for matching. (the orange and purple coax are 35 ohm if I recall correctly) So I guess the impedance of the elements might be around 70 ohm since it would be pretty easy to transform from 50 to 70 ohm with 35 ohm coax.
hello master this antenna is very popular in my country, this antenna is widely made and modified into a parabolic antenna that catches 4G LTE signals on the 1800, 2100, 2300 mhz frequencies
Want! Need! Must have! So unusual! Ive been buying and testing all sorts of antennas lately, and reading books old and new, and havnt seen anything remotely like this!
Those larger square loops are actually the resisting elements. Not reflectors or ground. The small antenna elements are actually used to 'capacitivly' couple the signal to the elements across the slot in the sides. You see this often on Vivaldi antennas. This style of feed gives the designer a few more degrees of freedom to make get the best impedance match. I suspect these are circularly polarised with a 90degree hybrid in the feed somewhere.
@@andrewmcneil looking more closely at that combiner, it's just a basic tee split, so nothing to create CP in there. The split feed might just be there to act as a form of balun.
It is not a circularly polarised antenna. It is a antenna with linear polarization fed from two separate sources, -45° and +45° for a "MIMO" . Cross Dipole
Hello sir.. i want to ask something about this katherine antenna. I have a big one and the small part, i want to build 4g lte antenna, i confuse to joint all the cable. On the big one have 4 cable (@1 cable have core and ground), on the small part have 2 cable. My big question: how to build 1 antena but use both of my antenna katherine part?
This could be an idea for a new video series. Andrew can call it "will it radiate?" The idea would be to hook up random metal objects to see what kind of frequency response they give!
The antenna is called a WBME - Wide Band Magneto-Electric dipole , check this link (it's in Russian) but it looks like an explanation to the antenna 3g-aerial.biz/wbme
I just learned about antennas and I bought a parabolic antenna, now I'm starting to make my own because I've become interested in the last antenna. I watched your video. I really like all your videos.👍
Done subscribed
Love from malaysia
Hello what kind of elements are going to use with parabolic reflector ?? If it is LTE it should support MIMO also . I am also looking for DIY idea for parabolic feeder.
How can I know Katherine Anthena's measurements, please?
Always enjoyable to watch. I’d guess you are looking at an antenna for 3G UMTS (WCDMA) band 1, smaller one possibly additional bandwidth to combine GSM 1800. Don’t see the combiner much any more, usually each dipole is driven from a different TX path for MIMO purposes.
Nice video.
what I noticed is that the fiberglass shell makes quite a difference in the frequency response, so they might be pretty similar when assembled.
Another interesting point is that they used 35 and 75 ohm coax to build transmission line transformers for matching.
(the orange and purple coax are 35 ohm if I recall correctly)
So I guess the impedance of the elements might be around 70 ohm since it would be pretty easy to transform from 50 to 70 ohm with 35 ohm coax.
hello master this antenna is very popular in my country, this antenna is widely made and modified into a parabolic antenna that catches 4G LTE signals on the 1800, 2100, 2300 mhz frequencies
Want! Need! Must have! So unusual! Ive been buying and testing all sorts of antennas lately, and reading books old and new, and havnt seen anything remotely like this!
Those larger square loops are actually the resisting elements. Not reflectors or ground. The small antenna elements are actually used to 'capacitivly' couple the signal to the elements across the slot in the sides. You see this often on Vivaldi antennas. This style of feed gives the designer a few more degrees of freedom to make get the best impedance match. I suspect these are circularly polarised with a 90degree hybrid in the feed somewhere.
Nice Thanks for the info
@@andrewmcneil looking more closely at that combiner, it's just a basic tee split, so nothing to create CP in there. The split feed might just be there to act as a form of balun.
@@scienteer3562 Could be, I want to remove on from the casing and take some measurements
It is not a circularly polarised antenna. It is a antenna with linear polarization fed from two separate sources, -45° and +45° for a "MIMO" . Cross Dipole
Please give us a chart of the head measurements of this antenna for local manufacture of 4G and 3G
I like this kind antena sectoral GSM really works properly in my place
Hello sir.. i want to ask something about this katherine antenna. I have a big one and the small part, i want to build 4g lte antenna, i confuse to joint all the cable. On the big one have 4 cable (@1 cable have core and ground), on the small part have 2 cable. My big question: how to build 1 antena but use both of my antenna katherine part?
Thanks for posting mate.. learned a lot. I work as network driver in denmark. ;-)
That's some cool looking camping stove
Ha ha I knew it reminded me of something Rey
This could be an idea for a new video series. Andrew can call it "will it radiate?" The idea would be to hook up random metal objects to see what kind of frequency response they give!
I remember seeing a patent for this one or one very much like it.
WOW! That's some pretty cool black magic pixie spakles.
Brother, I am from Algeria, and we do not have this antenna. Can you give me the head measurements of this antenna?
Hi mate and good day.. could you please do a tutorial for 850mhz katherin antenna... Thank you..
Kalau ada terjemahan bahasa indonesia.mungkin lebih banyak lagi subscriber
iya om. lengkap banget disini
Hahahaha
You have a friend at Hutchison Telecoms Wampooah?
Thanks David
What does the polarization look like?
hello sir.. can u share the dimension of the antenna by detail? thankyou
where to buy such an antenna?? please include a shopee link or something else, thank you 🙏🙏
katherin antenna or hybrid antenna
Is it possible to make this antenna?
Interesting stuff indeed.
Does it have continuity?
Hai andrew,can u give Katherin Antenna size
Hey andrew, can you teach us how to make that antenna.?
I will once I totally understand the design myself
@@andrewmcneil
thank Andrew. I like watching your vids of how you make good antennas.
@@andrewmcneil can't wait to see the outcome
Can i use one of these to receive 4g signal heheh. 😐
yes
Where to buy?
This antenna + and ground connected, Is it safe ?
Why????
@@andrewmcneil Is it okay if short
@@rheynaldyrama9978 Yes
How can i make this?
Спасибо, очень интересно и познавательно.
thanks bro
Sir plz provide dimensions of this antenna in pdf file
Antenna caterin sedang viral sekarang di malaysia indonesia and the philippines.
Can i have that one sir?
Can you get me new link this liink dead
alien tech. ?
Origami tech
sedang trending di negri +62
Sdah pny ?
@@abidalwi7448 lagi otewe
please sir send me that 2 kind of size for free thank much...
The antenna is called a WBME - Wide Band Magneto-Electric dipole , check this link (it's in Russian) but it looks like an explanation to the antenna 3g-aerial.biz/wbme
No it’s defiantly German en.wikipedia.org/wiki/Kathrein
Please give us a chart of the head measurements of this antenna for local manufacture of 4G and 3G
Please give us a chart of the head measurements of this antenna for local manufacture of 4G and 3G