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RF64 bảng dữ liệu(PDF) 22 Page - List of Unclassifed Manufacturers

tên linh kiện RF64
Giải thích chi tiết về linh kiện  ADVANCED COMMUNICATIONS & SENSING
PDF  76 Pages
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RF64 bảng dữ liệu(HTML) 22 Page - List of Unclassifed Manufacturers

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ADVANCED COMMUNICATIONS & SENSING
Page 22 of 76
RF64
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com
Reg_PA
Rx_on
PA
LNA
3.3.7.3. Suggested PA Biasing and Matching
The recommended PA bias and matching circuit is illustrated below:
VR_PA
47nF
100nH
PA
RFIO
SAW
DC block
Antenna
port
Low-pass and DC block
Figure 12: Recommended PA Biasing and Output Matching
Please refer to section 7.5.3 of this document for the optimized matching arrangement for each frequency band.
3.3.8. Common Input and Output Front-End
The receiver and the transmitter share the same RFIO pin (pin 32). Figure 13 below shows the configuration of the
common RF front-end.
In transmit mode, the PA and the PA regulator are active, with the voltage on the VR_PA pin equal to the
nominal voltage of the regulator (1.8 V). The external inductance is used to bias the PA.
In receive mode, both PA and PA regulator are off and VR_PA is tied to ground. The external inductance LT1
is then used to bias the LNA.
VR_PA
To
RFIO
Figure 13: Front-end Description



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