Antenna
topics 
related topics: Decibels, Electro magnetic waves,
RF transformers,
Transmission lines |
| 11 meter CB
antennas 11 meters yagi cubical quad antennas |
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AM Band Antennas
AM Band antenna, A good AM Band antenna can be a simple long-wire strung between
two trees or across the top of the roof |
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Antenna and Receiver Noise
noise power, Boltzmann's constant, background noise temperature, Sky Noise,
Antenna Noise Temperature, background noise, Atmospheric noise, pdf file |
| Antenna filter impedance
antenna filter impedance |
| Antenna calculations
impedance antenna matching, antenna impedances |
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Antenna characteristics antenna characteristics, doc file |
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Antenna
coil design pdf file |
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Antenna Design
Calculating of the antenna input circuit, Ferrite material, Practical antenna
design |
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Antenna formulas Antenna Basics, Antenna Polarization, Radiation Patterns,
Frequency-Phase |
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Antenna
gain and beamwidth antenna gain and beamwidth, Antenna Gain: The relative
increase in radiation at the maximum point expressed as a value in dB above a
standard, in this case the basic antenna, a ˝-wavelength dipole, ... |
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Antenna Gain Explained
Antenna Gain Explained,
the explanation of antenna gain, what is antenna gain |
| Antenna Gain, S-Meter, Radio/Signal report |
Antenna
Height and Communications Effectiveness The purpose of this paper is to
provide general information about communications
effectiveness as related to the physical height of antennas, pdf file |
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Antenna matching
Delta match, Quarter-wave transformer, LC network match, transformer match |
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Antenna Near Field Free Space Loss, FSL, Fresnel Zone, Receiver
Sensitivity, Antenna Gain, Transmit Power, Effective isotropic radiated power
(EIRP), System Operating Margin, Multipath Interference, Line of Sight, Fresnel
boundaries, Clearance, Refraction, Signal-to-noise ratio (SNR) |
| Antenna
radiation patterns gain for an antenna is expressed in decibels relative to an isotropic radiator (point source that radiates equally
in every direction), parabolic antennas, dipole antenna, 1/2 wave, vertical whip antenna, 1/4 wave, Yagi array antenna, circular loop antenna, square loop antenne, horn antennas |
|
Antenna
radiation patterns antenna radiation patterns, 2.4 GHz parabolic
antenna, semi parabolic antennas, semi parabolic grid antenna, omni antennas,
sectoral antennas, Yagi antennas, 2.4 GHz patch panel antenna 8 dBi |
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Antenna
radiation patterns understanding and using antenna radiation patterns, antenna radiations patterns, discone antenna, dual
polarized sinuous, guide fed slot, helix antenna, normal mode helix, axial mode,
horn antenna, linear dipole array, log periodic, loop antenna, circular antenna,
loop, alfred, loop, square, luneberg lens, microstrip patch, monopole |
| Antenna
radiation patterns the radiation pattern is a graphical depiction of the relative field strength transmitted from or received by the antenna |
| Antenna
radiation patterns pdf file |
| Antenna scatterers
analysis program general purpose thin-wire antenna analysis software program |
| Cellular
phone antennas and human health |
| dBi
Why I use dBi - Mostly |
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Electromagnetic Waves what are Electromagnetic Waves, Electromagnetic Waves
explained, the description of an oscillating electric dipole, Energy and
Momentum in EM Waves |
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Field Intensity Units What is the difference between dBu, dBm, dBuV, and
other units? |
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Free Space Field and Loss Calculations |
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Gain of Directional
Antennas
Polarization of antennas, Directive Gain from a Hypothetical Antenna, Antenna
Efficiency, Aperture, Type Antennas, Directive Gain and Beamwidth, Antenna Gain
and Polarization, pdf file |
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Impedance Matching of Open–Ended Waveguide Radiating Elements Impedance
matching of open–ended waveguide radiators in a planar phased–array environment |
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Isolation between antenna network and TV/radio equipment a ground loop in your AV system caused by antenna connection or TV cable is very common if you
have your computer connected to the same system. This type of ground loop problem can be solved by using suitable isolation between your AV system and the
antenna cable |
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Isotropic antenna
isotropic antenna: an ideal antenna that radiates power with unit gain uniformly
in all directions |
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Isotropic antenna
isotropic antenna calculations, dBi, or decibels relative to isotropic |
| Linear arrays
Definition of Antenna Pattern, Relative pattern, Two-Isotropic-element Array, Array of two isotropic sources, Three-dimensional pattern, Parallel dipole two-element array,
Geometrical positioning of pattern for two dipoles, Multi-element Uniform Linear Arrays, Broadside Linear Arrays, Beamwidth and Gain of Broadside Linear Arrays, doc file |
|
Measurable antenna parameters
pdf file |
| POWER
DENSITY
pdf file |
| Power splitters
a 0° splitter is a passive device which accepts an input signal and delivers multiple output signals with specific phase and amplitude characteristics,
pdf file |
| Putting a
balun and a tuner together A two wire transmission line as a three
terminal Device, The W2DU and W7EL models of a choke balun, Baluns on the input
and output of unbalanced tuners, The effectiveness of a balun |
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Radar technology
the physical basics of radar technology, radar principle |
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Radar technology
provides an introduction to radar concepts and terminology |
| Radar:
the origins of radar |
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Radiation
patterns The radiation pattern is a graphical depiction of the relative
field strength transmitted from or received by the antenna |
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Radiation resistance What is radiation rsistance |
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RF amplifier for ferrite bar antennas RF amplifier for ferrite bar antennas |
| Smith
chart spectral simulation, the Smith chart can help
us translate the reflection coefficient into impedance |
| Smith
chart What is a Smith chart |
| Tower and
Antenna Wind Loading as a Function of Height
pdf file |
| Understanding
electromagnetic fields and antenna radiation pdf file |
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Understanding Standing Wave Ratios Understanding Standing Wave Ratios |
| Why an antenna
radiates the basic principles of radiation, Why an Antenna Radiates |
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Why an antenna
radiates How an Antenna radiates, Radiation from an antenna, Near and Far
Field Regions, Field regions around an antenna, Far field radiation from wires,
Spherical co-ordinate system for a Hertzian dipole, Radiation Pattern, what are
Antenna Performance Parameters, Radiation pattern of a generic directional
antenna, what is Directivity of an antenna, radiation intensity of the antenna,
input impedance of an antenna, Voltage Standing Wave Ratio (VSWR), Return Loss
(RL) parameter, antenna efficiency, Antenna gain parameter, Polarization of a
radiated wave, bandwidth of an antenna, Half Wave Dipole, Radiation pattern for
Half wave dipole, monopole antenna, Radiation pattern for the Monopole Antenna,
Loop Antennas, Radiation Pattern of Small and Large Loop Antenna, helical
antenna or helix, Radiation Pattern of Helix Antenna, Horn antennas, pdf file |
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Radar technology |
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Active radar jamming testing and reviews |
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Calculators, Figures, Tables
police radar handbook |
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Doppler effect
the apparent change in frequency and wavelength of a wave that is perceived by
an observer moving relative to the source of the waves, ... |
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Doppler Effect |
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Doppler Effect
Doppler Effect |
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Doppler Effect |
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Electron Tubes for Microwave
Applications Electron tubes, Marine radar systems |
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Frequency of a
Police Radar Gun X band radar for police use 10.525 gigahertz (GHz) or
10,525 MHz, K band 24.050 to 24.250 GHz, wide Ka band 34.200 to 35.200 GHz |
|
Frequency Spectrum police
radar |
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Ladar Light Detection And Rangingn, infrared light wave |
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Police RADAR RADAR speed detectors bounce microwave radiation off of moving
vehicles and detect the reflected waves. These waves are shifted in frequency by
the Doppler effect, and the beat frequency between the directed and reflected
waves provides a measure of the vehicle speed, ... |
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Obstacle Detection |
|
Police Traffic Radar Handbook
Comprehensive Guide to Speed Measuring Systems |
| Radar
animated, system for the detection and tracking of vehicles approaching from the rear a tip |
|
Radar Basics |
|
Radar Course Control of emitted electromagnetic radiation, Control of
imaging geometry, Access to different parameters compared to optical systems,
Electromagnetic spectrum, Radar principles, Side-looking radars, Real Aperture
Radar (RAR), Real Aperture Radar: Range resolution, Real Aperture Radar: Azimuth
resolution, Synthetic Aperture Radar (SAR), SAR processing, ERS SAR geometric
configuration, Slant range / ground range, Optical vs. microwave image geometry,
..., a tip |
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Radar Detection & Laser receives |
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Radar detector A radar detector is an electronic device used by motorists to
determine if their speed is being monitored, ... |
| Radar
gun A radar gun is a small Doppler radar used to detect the speed of
objects, ... |
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Radar systems ppt file |
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Radar
the physical bases of radar technology, This home page contains a lecture on the
principles of radar technology. You'll find mathematical, physical and technical
explanations on this home page about radar technology, a
tip |
| Radar
technology introduction to radar concepts and terminology |
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Radar
technology introduction to radar concepts and terminology |
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Radar test |
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Radar Types - Pulse Radars, Doppler Radars, Frequency-Modulated FM Radar |
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X-band radar |
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dBi: = Gain of antenna with respect to isotropic antenna given in dB = 10 log
(power max / power isotropic)
dBd = Gain of antenna with respect to a dipole antenna given in dB = 10 log
(power max/ power max of half-wave dipole antenna)
dBi = dBd + 2.15 dB |
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Last updated on:
2008-04-10
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