[免费]Basic Antenna Principles for Mobile Communications

Challenger

移动通信中天线的基本原理，共46页，强力推荐。
下面是目录：
1. Introduction P - 3
2. Theory P - 4
3. Definitions P - 5
3.1 Polarization P - 5
3.2 Radiation Pattern P - 5
3.3 Half-Power-Beam-Width P - 5
3.4 Gain P- 6
3.5 Impedance P - 6
3.6 VSWR/Return Loss P - 6
3.7 Mechanical features P - 6
4. Base Station Antennas P - 7
4.1 Omnidirectional Antennas P - 7
4.1.1 Groundplane and l/4-Skirt Antennas P - 7
4.1.2 Side-mounted Omnidirectional Antennas P - 7
4.1.3 Omnidirectional Gain Antennas P - 7
4.2 Directional Antennas P - 8
4.2.1 Gain Achieved via Horizontal Beaming P - 8
4.2.2 End-fire Array P - 8
4.2.3 Broadside Array P - 8
4.2.4 Antenna Systems P - 9
5. Particular Techniques used in GSM and DCS 1800 P - 10
5.1 Diversity P - 10
5.1.1 Space Diversity P - 10
5.1.1.1 Omni-Base Station P - 11
5.1.1.2 Sectored Base Station P - 11
5.1.2 Polarization Diversity P - 11
5.1.2.1 Horizontal and Vertical Polarization P - 11
5.1.2.2 Polarization +45°/-45° P - 12
5.2 Indoor Antennas P - 12
– 1 –
6. Car Antennas P - 13
6.1 l/4 Antenna on the Car Roof P - 13
6.2 Gain Antennas P - 14
6.3 Rear Mount Antennas P - 14
6.4 Screen Surface Direct Mounting Antennas P - 15
6.5 Clip-on Antennas P - 15
6.6 Electrically Shortened Antennas P - 15
6.7 Train Antennas P - 16
7. Antennas for Portables P - 17
7.1 l/4 Antennas P - 17
7.2 l/2 Antennas (Gainflex) P - 17
7.3 Electrically Shortened Antennas P - 18
7.4 Field Strength Measurements P - 18


简介:
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yahan100

多谢楼主了啊！呵呵……

helong0105

多谢楼主

sary_jin

Thanks!