Precision Spinning 99% Alumina Ceramic Disc Guide 

99% 99.5% alumina ceramic flat plate plank Reputation depends on quality,  quality comes from Hard! Alumina Ceramics: Ceramic antennas have different radiating or receiving capabilities for different directions in space. This is the directivity of ceramic antennas. A directional pattern is usually used to measure the directivity of a ceramic antenna. On a horizontal plane, an antenna with no maximum direction of radiation and reception is called an omnidirectional antenna, and an antenna with one or more maximum directions is called a directional antenna. Voltage standing wave ratio When the input impedance of the ceramic antenna is not the same as the characteristic impedance of the feeder, the generated reflected wave and incident wave are superimposed on the feeder. The ratio of the maximum and minimum values of adjacent voltages is the voltage standing wave ratio, which is used to check the transmission of the feeder. On the basis of efficiency, the voltage s…