دانلود کتاب The ARRL antenna book

All the information you need to design your own complete antenna system. Since the first edition in September 1939, radio amateurs and professional engineers have turned to The ARRL Antenna Book as THE source of current antenna theory and a wealth of practical how-to construction projects. Use this book to discover even the most basic antenna designs-- wire and loop antennas, verticals, and Yagis--and for advanced antenna theory and applications. Many of the antennas in this edition benefit directly from advances in sophisticated computer modeling. This 19st edition has been extensively revised to include information you can use to build highly optimized or specialized antennas. The book includes new content on Near Vertical Incidence Skywave (NVIS) techniques, phased arrays, S-parameters as used in modern vector network analyzers (VNA), Beverage receiving antennas, mobile screwdriver antennas, ionospheric area-coverage maps, and much...much more. Contents  1 Safety First 2 Antenna Fundamentals 3 The Effects of the Earth 4 Antenna System Planning and Practical Considerations 5 Loop Antennas 6 Low-Frequency Antennas 7 Multiband Antennas 8 Multielement Arrays 9 Broadband Antenna Matching 10 Log Periodic Arrays 11 HF Yagi Arrays 12 Quad Arrays 13 Long Wire and Traveling Wave Antennas 14 Direction Finding Antennas 15 Portable Antennas 16 Mobile and Maritime Antennas 17 Repeater Antenna Systems 18 VHF and UHF Antenna Systems 19 Antenna Systems for Space Communications 20 Antenna Materials and Accessories 21 Antenna Products Suppliers 22 Antenna Supports 23 Radio Wave Propagation 24 Transmission Lines 25 Coupling the Transmitter to the Line 26 Coupling the Line to the Antenna 27 Antenna and Transmission-Line Measurements 28 Smith Chart Calculations A-1 Appendix