Hello; I wish to simulate a dipole above a plane of symmetry (perfect H). I must have a directivity equal to twice the directivity of the dipole but it is not the case. I did : Symmetry boundary>Perfect H>Edit port impedance multiplexer>2 I get the directivity of a single dipole with a desadaption S11 I do not know where is the probleme !!!
whene i replace a symmetry boundary by boundary perfect H (not symmetry) the directivity increases (around 6dB) but I lose in adaptation, I thought to change the impedance of my lemped port of Z = 73ohm to z = 100 ohm, with that I adapt better but I want to know if with that I can consider that my simulation is correct (as if I have 2 dipoles) ?? knowing that normally , i have to find a directivity not exceeding the 4.5dB not 6dB
anyone help me please !
thank you
Is the dipole vertically or horizontally placed? I would suggest to consult C. A. Balanis book “Antenna Theory and Design”, chapter 4 where impedance and directivity of half wave dipole above a perfectly conducting plane is given when the dipole is placed vertically and horizontally. The equations for total electric field of short dipole above perfectly conducting ground plane are also given. You can use same procedure for H-fields.
- Badges
- Science topic
- Similar topics
- Correction