PPT-Radio Frequency Signal and Antenna Concepts

Chapter 04 What Will I Learn We focused on RF signal and antenna concepts The antenna is a key component of successful RF communications There are five types of antennas that are used with . John ‘DaKahuna’ Fulmer. WT6M. Learning Objectives . Antennas - Definition. Antenna Systems. How Antennas Work. Polarization. Radio Frequency. SWR/VSWR. Real Antenna Systems. Learning Objectives (Cont. Conclusions. Radio Direction Finding System . Using Software-Defined Radio. Chatuporn. . Duangthong. , . Jirapoom. . Budtho. , and. Assoc. Prof. . Dr. . Pornchai. . Supnithi. Department of Telecommunications Engineering, Faculty of Engineering. Typically the diameter of the ground plane should be at least 3.. λ. /4. The parameters of helical antenna are-. D- diameter of a turn on the helix antenna.. C- circumference of a turn on the helix antenna.. Ankit. Jain. B.Tech. 5. th. . Sem. (ECE). IIIT Allahabad. Features :. High Gain ( 30-40 db). Low cross polarization. Reasonable bandwidth, Fractional Bandwidth being at least 5% on commercial models.. by . Ahmed . Alawneh. , Mohammed Mansour and . Alaa. . Rawajbeh. . The supervisor: Dr. . Allam. . Mousa.  . . 2014. An-. Najah. National University . Fuculty. of Engineering . Telecommunication Engineering Department . Nick Hall-Patch. IRCA-NRC-WTFDA-. DecalcoMania. Convention 2016. Antenna Alternatives. An alternative to THE antenna:. The Double . Kaz. (DKaz). good directivity within a limited space. Antenna Alternatives. Radio Wave Propagation and. Antennas/Reflectors. David Hensley. Senior Engineer Network & Systems. Before we get started…. This presentation has some math.. In fact, this presentation has some algebra.. Dr. Miroslav . Pantaleev. . – Onsala Space Observatory. With inputs from:. Dr. . Christophe . Granet. . - . Lyrebird Antenna Research Pty . Ltd. Dr. . John S. . Kot. - Lyrebird . Antenna Research Pty . The . Italian-South African combined effort. Pietro Bolli (INAF – . Astrophysical. . observatory. of . arcetri. ). Mariet. . venter. (SOUTH Africa radio . astronomy. . observatory. ). Italy - South Africa Radio Astronomy Workshop . MODEL 1701012 ELECTRICAL ITEM SPECIFICATIONS REMARKS Type of antenna Sleeve dipole antenna Frequency range 240248 GHz Nominal impedance 50 Ohm Polarization Vertical VSWR Les . P. atidar. Overview. What Is a Smart Antenna System? . The Goals of a Smart Antenna System . Signal . Propogation. : Multipath and . Cochannel. Interference . The Architecture of Smart Antenna Systems. Presented to. IEEE Life Member Group, Austin Chapter. IEEE Central Texas Section. by. Tom O’Brien, Life Senior Member, IEEE. Which is it?. Yagi-Uda Antenna. Dragonfly?. Fish bone?. Yagi-Uda Antenna. FREQUENCIES . By John Bailey M0MTW. EXPLORING VLF and ELF FREQUENCIES. 1.What frequencies. VLF (Very Low Frequencies). 2. .What can be heard?.. 3. Professional VLF Radio Stations. 4. .Local Interference . Frequency . Radio . Communications and ALE. 2018 ORWG . Wing Conference. Lt Col David Rudawitz. ORWG Director of Communications. Introduction to HF Communications. Introduction to HF Communications. HF (High Frequency) is the radio spectrum with frequencies ranging between 1.6 MHz and 30MHz. Within this radio spectrum an efficient mode of transmitter modulation, SSB (Single Side Band), is used..