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Power dividers (also power splitters and, when used in reverse, power combiners) and directional couplers are passive devices used mostly in the field of radio technology. They couple a defined amount of the electromagnetic power in a transmission line to a port enabling the signal to be used in another circuit.
In a radio antenna, the feed line (feedline), or feeder, is the cable or other transmission line that connects the antenna with the radio transmitter or receiver. In a transmitting antenna, it feeds the radio frequency (RF) current from the transmitter to the antenna, where the energy in the current is radiated as radio waves .
Curtain arrays were originally developed during the 1920s and 1930s when there was a lot of experimentation with long distance shortwave broadcasting. The underlying concept was to achieve improvements in gain and/or directionality over the simple dipole antenna, possibly by folding one or more dipoles into a smaller physical space, or to arrange multiple dipoles such that their radiation ...
1. Take regular breaks. Just like we humans need regular breaks to stretch our legs and go to the bathroom, so too do our canine companions. If you’re going on a long road trip with your dog ...
Fires continue to burn for a second week in the Los Angeles area, killing at least 27 people, destroying more than 12,000 structures and prompting evacuation orders for as many as 200,000 ...
The Taliban say they will close all national and foreign nongovernmental groups in Afghanistan employing women, the latest crackdown on women’s rights since they took power in August 2021.
Moultrie is the county seat and largest city of Colquitt County, Georgia, [6] United States. It is the third largest city in Southwest Georgia, behind Thomasville and Albany. As of the 2020 census, Moultrie's population was 14,638. [7] It was originally known as Ochlockoney until it was incorporated by the Georgia General Assembly in 1859.
A uni-directional vehicle is a vehicle that is normally designed to operate only in the forward direction. While the vast majority of road vehicles are like this, the term generally refers to a train or tram with a distinguishable front and rear end and a single operating cab at the front end.