What is Quad antenna?
Quad antenna is a type of directional antenna, which usually has its elements configured to four -sided square loops. As with the Yagi antenna, it usually has a controlled element that sends or receives a radio current over the supply line to the receiver or transmitter, and one or several parasitic elements that modify the formula, direction and profit of the controlled element. Where a yagi dipole or a double rabbit ear -type antenna uses one active element of a charged and one parasitic element increasing field, it uses Quad director and reflector. The directors help lead the main direction of the signal and reflectors strengthen the signal by occupying its opposite angle. This type of radio antenna reduces undesirable noise and allows a clear reception even at low altitudes, which makes it popular among amateur civic groups (CB) and Ham Radio enthusiasts. This antenna with a higher profit focuses its Radiaiont pattern in a certain direction, allowing stronger signal receiving less susceptible to interference and undesirable noise. Some elements of JThey are stacked in cubes anywhere from two to 16 elements in one pattern. Easily designed, products and configuration differs from small hand -held radio antennas to meals and roof fields.
The cancellation of undesirable radiation contributes to the gain of the antenna while streamlining energy and signal transmission. This cancellation occurs in a quad, because each side consists of short lengths that require low current and less pure radiation to work well. Square or cross sides are outside the phase and the upper and lower halves are also outside the phase. This results in significantly reduced radiation and less interference from unrelated signals.
The power of the transmitter as CB Radio is religious is the quality of its antenna. The factors include profit and type of antenna, height, range and operational efficiency. The weather also affects performance; The high voltage gradient between the air and the antenna creates coronal discharges thatThey create static hiss and appear in the receiver. The Quad antenna has been designed to solve this problem by minimizing protrusions and by placing the blunt side above towards charged areas. Even with this design can maintain a formula and get in accordance with a dipole element, ie an antenna of a double or T.
Quad antenna technology is popular for fans due to its efficiency and easy construction of one from zero. Home antennas can be made of wire on supports such as glass fibers or polyvinyl chloride (PVC). These antennas are usually mounted on rotating accessories to allow you to focus on the desired direction. Other components include insulators, coils and tuners.
Some characteristics of Quad antenna provide numerous advantages over Yagi and dipole types. Quad tends to provide greater profit than dipoles of similar size and better performance at lower heights or length of boom. They can be configured in many sizes, pile and multi -book fields and can be foldingfor portable use. Users usually report quieter operation. Their width of the band can be tuned to the maximum gain by extending the elements of the reflector and the director; This results in a significant expansion of the available bandwidth at a reduced level of profit.