October 15, 2010 at 00:38Testing Wi-Fi Antennas for WiMax Reception
In this article, I just talked about installing the miniPCIe WiMax module in the Samsung Q1 Ultra.
In the process of waiting for controller delivery, I was tormented by the question of what to do with the antenna for it.
Q2W was a little reassuring to me with my answer , and I decided that I would try my luck with my antennas.
In this article, I described the addition of an external antenna to a Wi-Fi controller integrated in a UMPC.
And below I will give the results of their use for WiMax
UP. There are three updates in the article:
1. Comparison with HTC MAX 4G in poor reception conditions.
2. Test of the new antenna - the winner
3. Tracing results of google.com and the torrent test of the 7th season of House MD :)
Here's what I had:
in the photo from left to right: remote mount, Planet 5dbi antennas, D-Link DWL-R60AT 6dbi, “ordinary Wi-Fi antenna”
I started with speed measurements without an antenna. Yes, even without an antenna, the device caught a signal. Maybe there is something built into the intel 5150, maybe something was caught on the mini-coaxial cable going to the antenna connector.
I note that doubts about the compatibility of WiMax and Wi-Fi antennas were significantly reduced as soon as I got my intel 5150.
The adapter supporting WiMax and Wi-Fi did not have separate antenna outputs for them, but only for internal and external antennas:
So I conducted tests indoors:
1. Without an antenna, the picture is gloomy:
Speed 1Mbit; CINR / RSSI: 14dB / -81dBm
2. With the "usual Wi-Fi antenna" remaining from the D-link router
Speed 7.21 Mbit; CINR / RSSI: 32dB / -58dBm
3. With a Planet 5dbi antenna
Speed 6.61 Mbit; CINR / RSSI: 30dB / -57dBm
4. With D-Link antenna DWL-R60AT 6dbi
Speed 7.72 Mbit; CINR / RSSI: 30dB / -64dBm
This is a directional antenna and above is the best result from 8 positions on the cardinal points.
I will give the worst case:
Speed 5.19 Mbit; CINR / RSSI: 26dB / -68dBm
It’s rather strange to observe such a small spread, while testing the WiFi antenna showed a high directivity. Maybe I'm surrounded by base stations?
The long-awaited conclusion:
- A significant part of the Wi-Fi antennas are compatible with WiMax. (Generally speaking, 3 out of 3 tested)
- External antennas provide excellent signal quality.
UP.
As promised, I conducted a test in a place with a low signal level.
In comparison, HTC MAX 4G, I have CINR 7dB vs CINR 0dB on HTC MAX. But both devices on the indicator show 2 features of 4.
The speed is about 2Mbit.
UP2. I remembered that I had another antenna lying around:
TRENDnet TEW-AI750. She lied because for Wi-Fi she showed very poor results.
Here it is: I
posted such a cool picture, because this antenna turned out to be the undisputed winner in the “antenna for Yota WiMax” nomination:
Speed 8.10 Mbit; CINR / RSSI: 32dB / -58dBm
With it I traced using PingPlotter:
And testing in a real application:
Speed - exactly 1 megabyte per second. In my opinion - just great.
An explanation of such good results can be found in the specifications on the manufacturer's website:
Frequency range
802.11a: 4.9 ~ 5.875GHz
802.11b / g: 2.4 ~ 2.5GHz
Gain 802.11a: 7dBi
802.11b / g: 5dBi
The antenna supports a very wide frequency range - from 2.4 to 5 GHz, and apparently this is exactly what you need for WiMax
UP.
After a while, I copied this article on pasokon.ru , if there are questions, but there is no account on the hub, you can write there.
In the process of waiting for controller delivery, I was tormented by the question of what to do with the antenna for it.
Q2W was a little reassuring to me with my answer , and I decided that I would try my luck with my antennas.
In this article, I described the addition of an external antenna to a Wi-Fi controller integrated in a UMPC.
And below I will give the results of their use for WiMax
UP. There are three updates in the article:
1. Comparison with HTC MAX 4G in poor reception conditions.
2. Test of the new antenna - the winner
3. Tracing results of google.com and the torrent test of the 7th season of House MD :)
Here's what I had:
in the photo from left to right: remote mount, Planet 5dbi antennas, D-Link DWL-R60AT 6dbi, “ordinary Wi-Fi antenna”
I started with speed measurements without an antenna. Yes, even without an antenna, the device caught a signal. Maybe there is something built into the intel 5150, maybe something was caught on the mini-coaxial cable going to the antenna connector.
I note that doubts about the compatibility of WiMax and Wi-Fi antennas were significantly reduced as soon as I got my intel 5150.
The adapter supporting WiMax and Wi-Fi did not have separate antenna outputs for them, but only for internal and external antennas:
So I conducted tests indoors:
1. Without an antenna, the picture is gloomy:
Speed 1Mbit; CINR / RSSI: 14dB / -81dBm
2. With the "usual Wi-Fi antenna" remaining from the D-link router
Speed 7.21 Mbit; CINR / RSSI: 32dB / -58dBm
3. With a Planet 5dbi antenna
Speed 6.61 Mbit; CINR / RSSI: 30dB / -57dBm
4. With D-Link antenna DWL-R60AT 6dbi
Speed 7.72 Mbit; CINR / RSSI: 30dB / -64dBm
This is a directional antenna and above is the best result from 8 positions on the cardinal points.
I will give the worst case:
Speed 5.19 Mbit; CINR / RSSI: 26dB / -68dBm
It’s rather strange to observe such a small spread, while testing the WiFi antenna showed a high directivity. Maybe I'm surrounded by base stations?
The long-awaited conclusion:
- A significant part of the Wi-Fi antennas are compatible with WiMax. (Generally speaking, 3 out of 3 tested)
- External antennas provide excellent signal quality.
UP.
As promised, I conducted a test in a place with a low signal level.
In comparison, HTC MAX 4G, I have CINR 7dB vs CINR 0dB on HTC MAX. But both devices on the indicator show 2 features of 4.
The speed is about 2Mbit.
UP2. I remembered that I had another antenna lying around:
TRENDnet TEW-AI750. She lied because for Wi-Fi she showed very poor results.
Here it is: I
posted such a cool picture, because this antenna turned out to be the undisputed winner in the “antenna for Yota WiMax” nomination:
Speed 8.10 Mbit; CINR / RSSI: 32dB / -58dBm
With it I traced using PingPlotter:
And testing in a real application:
Speed - exactly 1 megabyte per second. In my opinion - just great.
An explanation of such good results can be found in the specifications on the manufacturer's website:
Frequency range
802.11a: 4.9 ~ 5.875GHz
802.11b / g: 2.4 ~ 2.5GHz
Gain 802.11a: 7dBi
802.11b / g: 5dBi
The antenna supports a very wide frequency range - from 2.4 to 5 GHz, and apparently this is exactly what you need for WiMax
UP.
After a while, I copied this article on pasokon.ru , if there are questions, but there is no account on the hub, you can write there.