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In project, Antenna performance is characterised by some main parameters of direction diagram, main lobe width, sub-lobe level, gain, polarization, frquency band width, voltage standing wave ratio(VSWR), noise temperature and antenna wind load, etc. Please refer to national standard GB11442- 95 for the requirement of [...]
Antenna is divided into two categories which are rotated polarization and non-rotated polarization. Rotated polarization antenna has two types which are spiral and parabolic. And parabolic antenna has two basic forms. One is prime focus parabolic antenna of feed forward with only one reflector. The other is Cassegrain antenna [...]
Feed, the heart of antenna, serves as junior radiator of high-gain assembled antenna and provides efficient illumination for parabolic antenna.
