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clanon

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Posts posted by clanon

  2. Posted · Edited by clanon

    3 hours ago, Jayakumaran S said:

    I noticed the simulation includes a connector. Is it necessary to simulate with one?

    Also, if the antenna ends with a copper rod, I have assigned the wave port by selecting the rod’s end face. Similarly, for a copper tube, I selected the tube’s face and assigned the wave port.

    Kindly confirm if this method is correct.

    Face select inner+pet+shield+outer edge , then assign wave port (ALL of them should be leveled)

    puting a PORT on the END of an ANTENNA is a NO-NO

    1 person likes this

  3. Posted · Edited by clanon

    18 minutes ago, Jayakumaran S said:

     could you please send this corrected design file.

    And where i can see the OHM stuff in CST.

    Still workin on it (good antennas BAD FEED NETWORKS !) I'll upload it if it works give me time

    After the simulation is OK on Port impedance Z (should be 50 ohms ) Electronics = Cables= Antennas (50Ohms=50Ohms=50ohms)

  4. Posted

    Those TWO collineal  NEED an adapter to SHOW 100 Ohms in the middle (50ohms on coax)

    Two identical antennas of 50ohms would give 25ohms in the middle not right

    I ran one alone and is promising...

    Sin título.jpg

  5. Posted

    Those TWO collineal (2,4ghz) NEED an adapter to SHOW 100 Ohms in the middle (50ohms on coax)

    Two identical antennas of 50ohms would give 25ohms in the middle not right

  6. Posted · Edited by clanon

    First of ALL

    BOTH Your Coax cable HAVE NO SHIELD...

    Adding a SHIELD present a NEW problem (they would be DANGLING in the AIR -No Connected to ANYTHING)

  15. Posted

    6 hours ago, papagayor said:

    May the double port cause the lower dbi gain or the whole parts placement

    Does it have two connectors...?

    Reactivity is high and Z should stay closer to 50 ohms... to be ideal...

    1 person likes this

  21. Posted

    19 hours ago, KSM said:

     

    How are the power lines calculated for such an antenna?

    Is it the same as for printed circuit boards, where only air is taken into account as a dielectric, or are different formulas used?

    Also, why is the element with the director bolted to the reflector at the centre of the element?

    Phase and Impedance matching( Radiator Z + Feed point z)

    Yes ALL ANTENNAS are the same ; any conductive material) Dielectric must be CONSIDERED (different ε (epsilon), and Tangent Loss)

    A HALF WAVE radiator could be held at center point cause there is a Low impedance (high Current) point no EFFECT on general characteristics...(the WAVE is NOT MOVING at THAT specific POINT)