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My collection of homemade Antennas for KU
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<blockquote data-quote="casser" data-source="post: 516454" data-attributes="member: 264731"><p>It´s an alternative for Satellite dish antennas, but none of these antennas are weatherproof.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick Out Tongue :p" loading="lazy" data-shortname=":p" /></p><p></p><p>But the advantage of using conical horn antennas, is the less antenna diameter that we need to correspond to a dish antenna,</p><p></p><p>ex: a 32dBi conical Horn (35/40cms of diameter), correspond to a 75cm dish antenna..but the antenna gets very long, about 2m long!</p><p></p><p></p><p></p><p>In the beginning i used a LNB with the feed horn cut off, because in the original formula for Conical Horns ..it´s supposed to feed the conical horn with a Waveguide for 11.75Ghz with +-19mm of diameter..usually LNB´s waveguide have these dimensions.</p><p></p><p>But after some simulation, using a LNB with only the waveguide works better in Conical Horn´s with less of 25dBi (Due to the angle between the Horn mouth and the LN<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool :cool:" loading="lazy" data-shortname=":cool:" />. >26dBi a LNB with the original feed horn is better.</p></blockquote><p></p>
[QUOTE="casser, post: 516454, member: 264731"] It´s an alternative for Satellite dish antennas, but none of these antennas are weatherproof.:P But the advantage of using conical horn antennas, is the less antenna diameter that we need to correspond to a dish antenna, ex: a 32dBi conical Horn (35/40cms of diameter), correspond to a 75cm dish antenna..but the antenna gets very long, about 2m long! In the beginning i used a LNB with the feed horn cut off, because in the original formula for Conical Horns ..it´s supposed to feed the conical horn with a Waveguide for 11.75Ghz with +-19mm of diameter..usually LNB´s waveguide have these dimensions. But after some simulation, using a LNB with only the waveguide works better in Conical Horn´s with less of 25dBi (Due to the angle between the Horn mouth and the LNB). >26dBi a LNB with the original feed horn is better. [/QUOTE]
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My collection of homemade Antennas for KU
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