2008年3月24日 星期一

藍芽模組天線距離調整

建年學長表示提供之藍芽模組天線為全向性,PCB 天線當初設計時是全向性的,但PCB 天線唯一缺點是天線的水平面的場型強度低,所以使用時天線必須垂直於地面,可以得到最佳距離。但是如果利用此缺陷,則可以降低收訊距離。在做接收range調整時可以考慮這個特性。

1 則留言:

Yao Jen 提到...

If every BT beacon has to tuned manually by taping, the deployment becomes a difficult task. I suggest we retain only A, B, and C, three levels of EM wave blockage, which represent short-range, mid-range, and long range beacons respectively. For task prompting at large areas, we use C. For tasks that have to be measured in very short range, we use A. For those in between, we use B. Too many levels will result in intensive labors and fine tuning, which are probably not a good idea.