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Where are the antennas ?
- Thread starter DotCom2
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Wirelessly posted (iPhone 3GS (White, 32GB): Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_0 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7A341 Safari/528.16)
The chrome bezel is an antenna, as is the ring around the camera lens. I believe there are more, inside.
The chrome bezel is an antenna, as is the ring around the camera lens. I believe there are more, inside.
Wirelessly posted (iPhone 3GS (White, 32GB): Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_0 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7A341 Safari/528.16)
Oops. Forgot the ring around the headphone jack ...
Oops. Forgot the ring around the headphone jack ...
it's a really ingenious system, but most are up at the top of the phone because of FCC radiation issues
Except for the fact that he's completely right. Research, dude. Everything metal on the outside of the phone is an antennae. Please do not attempt to act like you know when you don't.
the REAL antennas are inside the case.
you can see some of them in this teardown of the 3G.
http://techon.nikkeibp.co.jp/english/NEWS_EN/20090114/164030/?SS=imgview_e&FD=-855375277
the 3GS is likely very similar. You'll note the main cellular radio antenna is located at the bottom/back - same place where the original iPhone's was (where the black plastic part on the back case was in original iPhone)
believe what you wish. even if YOU don't know. sheesh....
p.s. here's another look at the antenna itself.
2G http://www.ipaqrepair.co.uk/ipaqpart1193.html
3G http://www.ipaqrepair.co.uk/view_product.php?product=1817
ain't shaped like the bezel. or headphone jack. or camera lens ring. BTW antennas aren't simply any old random shaped and sized piece of whatever-available metal you can find on a device. but I guess you knew that.
Wirelessly posted (iPhone 3GS (White, 32GB): Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_0 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7A341 Safari/528.16)
So I guess Apple was full of **** when they had this info listed on their website prior to the 3GS' launch?
b.c. said:
So I guess Apple was full of **** when they had this info listed on their website prior to the 3GS' launch?
Apple.com said:
Wirelessly posted (iPhone 3GS (White, 32GB): Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_0 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7A341 Safari/528.16)
Oh, and if you're bored, just copy/paste this into Google.
"Clever iPhone engineering integrates those antennas into a few unexpected places: the metal ring around the camera, the audio jack, the metal screen bezel, and the iPhone circuitry itself."
b.c. said:
Oh, and if you're bored, just copy/paste this into Google.
"Clever iPhone engineering integrates those antennas into a few unexpected places: the metal ring around the camera, the audio jack, the metal screen bezel, and the iPhone circuitry itself."
You are correct, but wrong when it come to the iphone. I understand where you are coming from if you have any understanding of antenna theory, but these phone don't need perfectly radiating antennas.
Well I am even more unsure where the antenna is after reading this thread!
The reason I am asking is because I am interested in buying a super duper hard case and my fear is that the case with block some of the waves from getting to the antenna since some of my friends have told my that this indeed is a reason for bad reception in some cases.
Has anyone tested signal strength with both the case off and on to see if there is a diff? Especially with the harder shell cases?
The reason I am asking is because I am interested in buying a super duper hard case and my fear is that the case with block some of the waves from getting to the antenna since some of my friends have told my that this indeed is a reason for bad reception in some cases.
Has anyone tested signal strength with both the case off and on to see if there is a diff? Especially with the harder shell cases?
Well I am even more unsure where the antenna is after reading this thread!
The reason I am asking is because I am interested in buying a super duper hard case and my fear is that the case with block some of the waves from getting to the antenna since some of my friends have told my that this indeed is a reason for bad reception in some cases.
Has anyone tested signal strength with both the case off and on to see if there is a diff? Especially with the harder shell cases?
As long as the case doesn't contain any metal in it and that the material it is constructed with is not as dense as lead, it will be fine.
So I guess Apple was full of **** when they had this info listed on their website prior to the 3GS' launch?
oh snap.
No. You believe what YOU want. You are wrong. Everyone knows it. The headphone jack ring, ring around the lens, and the bezel are all external antennas. Apple said so itself.
You do not know what you're speaking about. Please do not argue against what's been talked about before.
So I guess Apple was full of **** when they had this info listed on their website prior to the 3GS' launch?
It doesn't mean what most people think it does. My guess is that marketing went around the different departments and asked if there was any cool info they could use, breakthrough or not.
Teardowns do not show any direct antenna connections to those parts, on any iPhone model. But there doesn't have to be.
It's common for cell phone designers to use metal bezels, etc., as cheap, unconnected antenna boosters. Apple isn't inventing anything here. It's been done on cellphones for about ten years. Motorola is supposed to be a whiz at this.
Some of mobile radio design is what engineers call "black magic"... that is, done by simple empirical testing. They move parts and circuit traces and shields around until they get the best signal and the least internal interference.
Anyway, to answer the OP: the GSM radios' antennae are still at the bottom. The BT, WiFi and GPS antennae are at the top.
Or, according to the company that actually designed the iPhone, "the metal ring around the camera, the audio jack, the metal screen bezel, and the iPhone circuitry itself."
More correctly: "According to the marketing department of the company that etc. etc."
So I guess Apple was full of **** when they had this info listed on their website prior to the 3GS' launch?
i lol'd
Exactly. According to the company that designed the phone. And I think they know just a little bit more about the iPhone's design than any of us.
Apple doesn't need to try too hard to convince us that they have the best technology put into iPhone. iPhone users know it's not true if compared to other latest technology phones out there, and that's okay with them.
Metal ring around the tiny camera. Gimme a break!
Metal ring around the tiny camera. Gimme a break!
ok as a ham radio operator I know a little about antennas. They are specific to a frequency. you tune the antenna by lengthing or shortening the antenna. This being said, all the antenna needs is a certain amount of metal in length. My question is how they work if they are not connected?