Talk:Collinear antenna array

Spelling

Should the title "Collinear antenna array" be spelt with a single "l" as in the text? --jmb (talk) 14:12, 17 March 2008 (UTC)

It absolutely should. It's a compound word composed of the prefix "co-" and the word "linear"; there is nowhere to get a second L from. --Okto8 (talk) 17:39, 4 December 2019 (UTC)

• @Okto8: Did you not google "Collinear antenna" and "Colinear antenna", both are used but Collinear is the more usual and correct because it's comes from Collinearity, which was linked from the article till you broke the link and changed to the Colinear disambiguation page. Plus you 'fixed' the spelling in the image file-names thus breaking them, so just removed them instead of fixing. KylieTastic (talk) 18:27, 4 December 2019 (UTC)

Sterba curtain

What about the Sterba Curtain? DaveJunior (talk) 14:26, 30 May 2009 (UTC)DaveJunior

Smith chart

Any way someone could add a sample Smith chart to show RF radiation patterns? Such a chart would be especially useful for Amateur Radio applications, although I am sure it would be a useful item for all radio services using VHF and higher frequencies. Erzahler (talk) 03:17, 27 December 2019 (UTC)

Confusion over type

The article groups 2 different radiator types as one, then seems to confuse them.

The array of 4 folded dipoles is actually a cophased array, not a collinear array. The feedline for the folded dipoles is typically phased with a harness with 1/4 wavelength between the "T"s. Typically 4 are used, since the feedpoint impedance of a folded dipole is 200-300 ohms, 2 sets of 4 in parallel will deliver the typical 50 ohm feed impedance. The folded dipoles need to have each half of the element connected to the coaxial cables shield or center (shield to one leg of the dipole, center to the other.) All of the dipoles must be fed in phase (or at shifted phase for directionality)

The collinear radiator is "linear" all in a single line. The bottom radiator is the feedpoint, the next element is fed from the top of the first, through a phasing coil between each radiator. This is why it is called collinear. They are found in high gain wifi antennas, most 2-way high gain repeater and fixed station antennas, some mobile antenna designs. They are far more common than just the amateur radio world.

Collinear arrays can be cophased, but they are still individually collinear radiators. — Preceding unsigned comment added by The Pipers Bag (talk • contribs) 22:34, 23 January 2021 (UTC)