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天线设计参考(天线设计).pdf

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AN058 Audun Andersen • • • • • 2.4GHz 868/915MHz • • • • • 1 (SRD) www.ti.com.cn/rf EM PCB Antenna Chip Antenna Whip Antenna 1. ZHCA070 1
AN058 1 1 2 3 4 4 4 4 5 9 10 12 12 14 15 16 16 16 16 17 19 19 1 2 3 3.1 PCB 3.2 CHIP 3.3 WHIP 4 4.1 4.2 4.3 5 www.ti.com.cn/rf 5.1 2.4GHz 50Hz 5.2 2.4GHz 5.3 868/915MHz 6 6.1 6.2 EM 6.3 7 8 8.1 2 AN CW DB DN DUT EIRP EM EM IFA ISM LOS MIFA PCB RF SRD TI VSWR Application Note Carrier Wave Demonstration Board Design Note Device Under Test Effective Isotropic Radiated Power electronic Magnetic Evaluation Module FInverted F Antenna IndustrialScientificMedical Line Sight FMeandered Inverted F Antenna Printed Circuit board Radio Frequency Short Range Device Texas Instruments Voltage Standing Wave Ratio ZHCA070 2
AN058 3 PCB PCB • • • • • PCB • • • • • • 1. 5050 50 2 RF Single Ended Antenna Differential Antenna 2. ZHCA070 3
AN058 2.4-2.4835GHz863-870MHz902-928 868MHz,915MHz 868MHz915MHz 868/915MHz 3.1 PCB PCB www.ti.com.cn/rf 4 3.2 1GHzPCBBOM0.1-1.0 50 PCB 3.3 SRDSRD001[1]032[2] 4 4.14.2 PCB 4.3 ZHCA070 4
AN058 4.1 31PCB 33 3. dBi Effective Isotropic Radiated35.6dBi3 4dB/div4dB1PCB 05.6bB1806.4dB PDeG rad P in PD rad P in U U max avg 1. G1 D ZHCA070 5
AN058 SRD Line of Sight DUT Rf D2. fR 22D 2. XYXZYZ 3D =90=0=904 0X XYYXZ0ZXYZ0Z Y 4. ZHCA070 6
AN058 5 SmartRF04EB5SmartRF04EB -1.2dB4.6dBSRD ZHCA070 7
CC1100EM PCB Antenna in SmartRF04EB CC1100EM PCB Antenna without SmartRF04EB AN058 Vertical Polarization, YZ plane 0 dBm, 868 MHz 2 dB/div Ref Lev: 4.6 dB Vertical Polarization, YZ plane 0 dBm, 868 MHz 2 dB/div Ref Lev: -1.2 dB 5. ZHCA070 8
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