wifi modem antenna 不见了,可以 diy 一个的吗？

Dogs1985

我的 wifi modem antenna 不见了，请问可以用铁线之类的东西自己做出来的吗？我不懂有没有问对地方，如果错了，请指点我。

光头

看看这里能不能帮到你..............
http://forum.lowyat.net/topic/523447

牛牛好累

山山

我好奇下，收到的线算是偷人家的吗？

光头

通常都有set password的。
如果没有的话就当自己提供免费服务咯！
其实在住家的，即使收到，也隔了一道墙，收线很弱..........

Dogs1985

我做了个是用 100 号罐子做的，把他弄进 wifi router 里，果然行。

光头

其实很多方法都可以，他只是需要amplify罢了...........
即使用kuali也可以！

杰义崎_邱国顺

真的可以？？
不会吧？

海仙子

原帖由 Dogs1985 于 11-2-2008 09:41 PM 发表
我做了个是用 100 号罐子做的，把他弄进 wifi router 里，果然行。

真的吗？
请附上照片，让大家见识见识下。

TechNeTium

你试试插一条wayer进去就可以。。。因为通常Dipole-type Omni Antennas就是一支铁线。。
长度就根据你的frequency决定咯。。通常是2.4GHz 。。。


The following are simplified antennas based on the Dipole Antenna described at http://wireless.gumph.org/
The principle
The principle used in all these designs is to alternately expose each of the two poles for half a wavelength.
The length of the half-wavelength is, as used in the "Gumph" designs, i.e. 40.5mm because they all use copper elements.
General Properties
These antennas should be mounted with the elements vertical. That way their"doughnut" shaped signal spreads out horizontally into the surrounding area.When testing against an (Orinoco 802.11b WiFi) PC wireless card it will be found that betterreception is obtained by orienting the card (and the laptop/computer/access point) on its side rather than flat. This is believed to be because of the polarisation produced by these dipoles.
1. Very Simple Coaxial DipoleDescription
This is a single element dipole that is quicker to makeand avoids the time consuming soldering needed by the "Gumph" design.
It is (probably) similar to many of the commercial Dipoleantennas such as The ZoomAir 2.2 dBi Dipole Antenna Model #98110-02 and (probably) has the same gain of 2.2 dBi.
It works quite well with a maximum range of 300m with an unobstructed line of sight.
The "doughnut" area that the signal covers is quite "deep"so this antenna is suitable for mounting high up on a buildingand the signal reaches downwards almost vertically below it.

Materials
As for the "Gumph" but needs a shorter piece of cable.
(1) (MIL-C-170-RG) RG213/U 10.1mm thick RF coaxial cable only 12cm long.(Maplins order code XS66W, £1.29/Metre)
(2) N-Type Free Socket (Maplins socket type N011, order code FP01B, £2.29)
Total Cost: about £2.50
Time to Make: about 1 hour
Tools
Hack saw

Instructions
(1)Cut the end of the cable so that it fits the socket which has a compression type fitting with a rubber washerand a screw-up tightening action.(2) mark up two lengths of 40.5mm (see "Gumph") beyonda short length (about 2cm) for the socket fitting.Cut through the PVC cover at these points (But not through thewoven copper outer conductor).

Cut right through the cable at the end of the antenna and strip off the black PVC cover of the second half-wave.

Strip off the woven outer copper conductor of the second half-wave.

Cut through the opaque inner polyethylene insulator at the half way pointbut do not cut through the inner copper conductor.

Strip off the opaque inner polyethylene insulator of the second half-waveleaving the inner copper conductor exposed. (If the insulator does not pulloff easily, several cuts may be needed to pull it off bit-by-bit.)

Strip off the black PVC cover of the first half-wave.

Attach the socket and thats it. Ready to use. Note that in use the antenna should be oriented so that itis vertical.You can additionally put theantenna inside some sealed conduit for outside use.