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[CSTUser]

Dear professionals;

I am a beginner level CST User and I am trying to design bow tie antenna for THz region. After investigating related articles and simulation methods i decided to use two ports and solve my structure with frequency solver method in CST. One of the main aim of the design antenna was that it must have a resonance at predetermined frequency. The lowest reflectance at resonance frequency is also important because structure has to absorb more power at resonance frequency.

My result was interesting because I got narrow bandwidth at resonance frequency. Many antenna books (such as Stutzmann's) mentioned that bow tie antennas show broadband behavior.

Is it normal or am I making a mistake somewhere?

My simulation details

Ports: Two ports
Radiation direction and polarization: Radiation comes onto antenna vertically and 90 degrees polarization was performed
boundary conditions: unit cell was used