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What is the difference between Log Periodic and Yagi Uda antennas?
Wiki User
∙ 14y ago
The Yagi consists of one driven element, plus one or more shorter elements acting as directors placed in front of it, plus one or more longer elements acting as reflectors placed behind it. Technically, the driven element is cut and the feed system is matched for a specific frequency ... the farther from that frequency, the more the performance of the Yagi degrades.
The Log Periodic array consists of a uniformly tapered array of many elements. The lengths of the elements and the spacing between them decrease by a constant ratio as you move down the array, and all of the elements are electrically connected to the feed line.
The objective is an array that's very broad in frequency. The idea is that at any given frequency within the total range of the array, the element closest to a resonant length will radiate/receive best, those in front of it will function as directors, and those behind it will function as reflectors.
Wiki User
∙ 14y ago
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Who discovered the antenna?
yagi uda
Why yagi uda antenna is used?
Some advantages of the Yagi- Uda Antenna include that this is a widely used design and low cost. The construction also is simple. Some disadvantages are that the receiver of the Yagi-Uda Antenna may have problem receiving signal.
Is parasitic elements are used in yagi-uda antenna?
Yes - reflector element and directional elements.
How many directors and reflectors in Yagi Uda antenna?
yagi udda antenna has only one reflector...but it has many directors...depending upon gain and efficiency...the length of reflector is normally...more than one-half of wavelength... and directors have a length less than one-half of wavelength...
What is the difference between yagi antenna and dipole antenna?
I don't think it has. Bandwidth depends on the diameter to length ratio of the antenna. The greater the diameter of the elements the wider the bandwidth. The inductance goes down and the capacitance goes up, giving the antenna a lower Q. the folded dipole has a greater effective diameter (at least double for the same materials). You can increase a normal dipole's bandwidth by increasing the diameter, hence the old time birdcage aerials.
What has the author Walter K Kahn written?
Walter K Kahn has written: 'Currents on generalized Yagi structures' -- subject(s): Antenna arrays, Antennas, Dipole, Dipole Antennas, Impedance (Electricity)
Why yagi uda antennas are now not in use?
They are in use all over the world but they are used less for TV in areas wired for cable TV.
What is the difference between antenna and antennae?
The transmitter or radio is the device that gives the "frequency" (for example "Ubiquiti XR7 radio") and the antenna is the device that irradiates that frequency. We have to consider that each type of antenna irradiates in a different way (for example dipole antennas that are omnidirectional or yagi antennas that are directive)
Is Yagi antenna compatible with Nintendo Wii?
Not without opening up the wii and making some modifications. The antennas for the Wii's wireless networking are both completely internal to the console. There are no external connectors to attach an Yagi to, or any other external antenna for that matter.
What two types antenna used for terrestrial microwave communication?
Virtually all terrestrial microwave communication is point-to-point, using parabolic reflector antennas. A small percentage uses yagi, helical, corner reflector, or flat-plate reflector antennas. Essentially no "omnidirectional" antennas are used in microwave.
Are cross-element Yagi antennas always circularly polarized?
No. They can be circularly polarized with the correct phasing harness, or used as a way to switch between horizontal and vertical polarization with one antenna. No. They can be circularly polarized with the correct phasing harness, or used as a way to switch between horizontal and vertical polarization with one antenna.
What is broadband antenna?
A broadband antenna is one that works with a large range of frequencies. Broadband antennas can be used with a TV or a wireless computer network. Different types of broadband antennas include directional, patch, corner reflector, and Yagi.
What is Yagi in Japan?
'Yagi' means a goat.
How tall is Tadamori Yagi?
Tadamori Yagi is 6'.
When was Yoko Yagi born?
Yoko Yagi was born in 1980.
When was Norihiro Yagi born?
Norihiro Yagi was born in 1969.
What is a yagi?
A yagi is a directional antenna consisting of two or more dipoles.
