Engineering

From LoveToKnow 1911

"Antenna , device, destine to receiving or transmitting electromagnetic waves. Function of receive antenna is extraction energy from electromagnetic field. Transmit antenna convert energy of generator into radiation of electromagnetic waves. Antenna has several important parameters: resonant frequency,gain, impedance, aperture or radiation pattern, efficiency and bandwidth, polarization. Transmit antennas also have parameter - a maximum power rating. Receive antennas may differ in their noise rejection properties.

Basic antenna types:

Antennas can be classified in different ways.

• isotropic radiator
• dipole antenna
• Yagi-Uda antenna
• Loop antenna - large loop antenna and small loop antenna
• microstrip antenna
• parabolic antenna
• The electrically short antenna
• quad antenna
• random wire antenna
• Beverage antenna
• helical antenna
• Phased array
• Synthetic aperture radar
• trailing wire antenna
• evolved antenna
• dielectric resonator
• feed horn

<< Manoel Arriaga Brun Da Silveira E Peyrelongue

Artillery >>

Subcategories

There is 1 subcategory to this category.

A

• Engineering

Articles in category "Engineering"

There are 93 articles in this category.

A Abated Abrasion William George Armstrong, Baron Armstrong Sir William Arrol Ashlar Asphalt B Basement Bearings Henry Bell Bench-Mark Berm Boiler making Brick Brickwork Sir Charles Tilston Bright Sir James Browne Isambard Kingdom Brunel Builders' rites C Cantilever Chamfer Chute Josiah Latimer Clark Coast defence Cofferdam Concrete Concrete (Material) D Dam Drainage of land Sir Francis Drake Duramen E Earthquake

E cont. Elevators James Elmes Engine Engineering F Sir William Fairbairn G Gabion Glazing James Henry Greathead H Half-Timber Work Thomas Hawksley Eaton Hodgkinson House Housing Hydraulics I Injector J Henry Charles Fleeming Jenkin K William Thomson, Baron Kelvin L Levee Lever Lighting William Lindley Load M Machine Masonry Metallurgy John Muir N James Nasmyth P Pantograph Parallel Motion Pile Plaster-work Plumbing

P cont. William Pole Profile Pump R Rafter William John Macquorn Rankine Reel Roofs Rubble S Set-off Sewer Shoring John Smeaton Smoke Specification Steel Construction George Stephenson Robert Stephenson Strength Of Materials T Thomas Telford Terracotta William Thomson Tool Torque Truss Turbine W Wall Water Motors James Watt Wattle And Dab Wheel