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参数资料
| 型号： | RC2202MM |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | ZigBee Ready RF Transceiver Modules |
| 中文描述： | 的ZigBee功能的RF收发模块 |
| 文件页数： | 12/17页 |
| 文件大小： | 372K |
| 代理商： | RC2202MM |
The simplest antenna to use is the quarter wave whip antenna. A quarter wave whip antenna
above a ground plane yields 37 Ohm impedance and a matching circuit for 50 Ohm are
usually not required.
A PCB antenna can be made as a copper track where the ground plane is removed on the
back side. The rest of the PCB board should have a ground plane as large as possible,
preferably as large as the antenna itself, to make it act as a counterweight to the antenna. If
the track is shorter than a quarter of a wavelength, the antenna should be matched to 50
ohms.
The length of a quarter wave antenna is 2.9 cm at 2450 MHz.
RC220x
2005 Radiocrafts AS
RC220x Data Sheet (rev. 1.0)
Page 12 of 17
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| RC2204M | 制造商:Thomas & Betts 功能描述:Tape Terminal |
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