Transcription of THE LOG-PERIODIC DIPOLE ARRAY - Salsburg
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THE LOG-PERIODIC DIPOLE ARRAY - Salsburg
THE LOG-PERIODIC DIPOLE ARRAYThe LOG-PERIODIC DIPOLE ARRAY (LPDA) consists of a system of driven elements, but not allelements in the system are active on a single frequency of operation. Depending upon itsdesign parameters, the LPDA can be operated over a range of frequencies having a ratio of2:1 or higher, and over this range its electrical characteristics gain, feed-pointimpedance, front-to-back ratio, etc. - will remain more or less constant. This is nottrue of any Multielement Directive ARRAY Antenna, for either the gain factor or thefront-to-back ratio, or both, deteriorate rapidly as the frequency of operation departsfrom the design frequency of the ARRAY .
THE LOG-PERIODIC DIPOLE ARRAY The log-periodic dipole array (LPDA) consists of a system of driven elements, but not all elements in the system are active on a single frequency of operation.
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