參數(shù)資料
型號(hào): MRF24J40
廠商: Microchip Technology Inc.
英文描述: IEEE 802.15.4⑩ 2.4 GHz RF Transceiver
中文描述: IEEE 802.15.4標(biāo)準(zhǔn)⑩2.4 GHz射頻收發(fā)器
文件頁(yè)數(shù): 51/66頁(yè)
文件大小: 748K
代理商: MRF24J40
2006 Microchip Technology Inc.
Advance Information
DS39776A-page 49
MRF24J40
FIGURE A-5:
IMPEDANCE OF THE PCB ANTENNA WITH VOLTAGE STANDING WAVE RATIO
The most critical part of maintaining proper impedance
is adhering to the specified dimensions of the printed
circuit board antenna (see Figure A-6). The antenna
dimensions, if altered, will change the specified imped-
ance. As an example, a 1 mm variance will shift the
impedance by 5-10 MHz.
FIGURE A-6:
PRINTED CIRCUIT BOARD ANTENNA DIMENSIONS
Note:
This part has been simulated using a
HFSS simulator provided by Ansoft
Corporation.
1.0
1.0
1.0
1.0
1.0
0.72
3
0.85
0.5
3.82
4.2
6.6
4.3
1.2
1.3
20
3.8
5.3
8.6
22.0
1.2
6.0
1.54
0
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MRF24J40-I/ML 制造商:Microchip Technology Inc 功能描述:ZIGBEE Transceiver IC