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clanon
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Everything posted by clanon
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Reception...? UNIdireccional Omnidirectional indoors outdoors...?
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JOMY...! HOW do i LOWER the VSWR... antenna is GREAT but too INDUCTIVE REACTIVE... too NARROW BAND... distance to reflector change NO GOOD distance to feed network NO GOOD
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NON PERIODIC ( non resonant ) CABLE lengths shouldn't be a problem (only for signal loss , bad connectors, too long , bad quality losses) it's just an interaction between the VNA hardware and the cable...i think... CORRECT ME if i'm wrong.
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if I build it (which i WON't) I would pass the cable STRAIGHT ( NO angles ) from the reflector's CENTER and solder it from BEHIND...(but that's just me) need to simulate to confirm...Like i did on the parabolic feed...of course you need to fix the reflector without the bolt in the middle or make it HOLLOW
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send ONE bitcoin my way...and we're EVEN! HOPE you BUILD it and tell how it goes!
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He's VERY limited in Theory and Software... It seems like he's always GUESSING with some things he REALLY know (from experience) the guy is old school...see his EQUIPMENT... In the Comments , he's always being CORRECTED... I asked him SEVERAL times about the IONNICA...(avoided me always) Knowledge is HARD...you must be flexible and keep at it...there's ALWAYS something NEW
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can't you install wifiinfoview or any other software in the client hardware...and look back at the 722...?
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not is NOT the best design for less than 15dbi.... There's hundred or thousand designs for 15dbi or more (in this iste even) EASIER to MAKE With the 722 i use ONLY METAL antennas...dielectrics SUCK the juice of the signals... PS:The BIG change in VSWR is not a real life issue...is a SOFTWARE setting , intersections, port, or other...(can't change THAT much for 0.01 or 0.02)
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i'll check and confirm All this for FR4 1mm PCB
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AHHH! you mean BlueTooth 2400 to 2483.5 (center at 2441.75 and 83.5mhz of bandwidth) YES it's NOT hard once you decide materials and performance...
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I mean 10 to 25 MILLIMETRES
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yup...you're close 53 degrees ...but it COULD be "tweaked" and "customized"... what you mean for BT frecuency...? Yes it has a NICE 50 ohms curve.... PS: I ussually CENTER to channel 6 (2437ghz) and up and down to ch1 and 11...YMMV When we are satisfied with the results i'll give you the drawings...(dxf , dwg , cst ,etc) or jpgs with dimensions... over the original drawing
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NOP...this dipole arrays (doble sided pcb) ALWAYS have the REFLECTOR FAR AWAY (between 10 and 25 centimeters) PS: I don't think it would change a lot if you peel off the sleeve from reflector to panel...
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for wifi (2,4ghz) ...? (close to 19dbi) it's hard to draw ...with precision...and originally is for 3.5ghz... performance NOT guaranteed...but if you wanna try...
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reflector at 20 mm...(needs some refining) FR4 1mm thickness
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ok... i'll give it a go this week... and see how it goes...
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Sensitivity (how well you LISTEN) and NOT POWER (how much you YELL) is the KEY FACTOR... VSWR (closer to 1 and always under 2.1) is of utmost importance... the TL-WN722 is one of the MOST sensible radios out there (if it has the AR9271 Ver.1.0) I have managed to get connections trough several walls and long distances (with ANY good antenna) the power output...never need more than 100mw...microwaves don't need that much power...because of the high frequencies...(it could be worse with an amp) the 722 (AR9271) should be able to work great with those Yagis... PS: use the SHORTER cable possible and SOLDER direct to antenna...if posible (connectors steal signal)
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...the thing (in practice is i've pointed HIGHLY DIRECTIONAL antennas to REFLECTIONS from routers i know aren't there and still get a good connection...you lose less than 3db by wall (ussually) 2.4ghz goes trough most materials non-metal... the antennas are very similar in PERFORMANCE.... which one is easier to build and keep closer to specs...for YOU...? i think the YAGIs...are easier...
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wn722 and ALMOST ALL wifi are 50 ohms standard... long range ...? HOW LONG...? how powerful and sensible each "radio"...? Obstacles or Line of Sight...? 14db at 90% efficiency or more is good for some kilometres without obstacles with a SENSIBLE (-96db or more ) radio (Wn722)...but depends in the router you are connecting to...
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on "THESE" getting more than 15dbi means using close to 20 directors...and EVEN then gain of yagis kinda HIT a maximum...maybe 16-17 dbi (Reflector AREA increase GAIN more than adding Directors) Use the BIGGER you can...imho
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what are the specs of the substrate (PCB) you're gonna use...? dielectric constant and thickness...
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Never over 8 to 9 dbi... (its NOT good) maybe used to feed a dish...
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Jomy , what material i should use for the COVER...PVC...? (for that logper)...