Printed Dipole Antenna with Integrated Balun
This note shows simulation results for a printed Dipole Antenna with integrated Balun. The design is based on the article "3-D FDTD Design Analysis of a 2.4-GHz
Polarization-Diversity Printed Dipole Antenna With Integrated Balun and Polarization-Switching Circuit for WLAN and Wireless Communication Applications" by Huey-Ru Chuang and Liang-Chen Kuo, IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 51, NO. 2, FEBRUARY 2003.
Figure 1 shows the design of the antenna. The dimensions can be found in the reference paper. The full parametric structure definition in CST MICROWAVE STUDIO® (CST MWS) takes about 15 minutes for an experienced user
Figure 1: Design of the Printed Dipole Antenna
The Antenne is excited by a 50 Ohm Microstrip Line. Figure 2 shows simulated and published VSWR of the antenna from 2-3 GHz. The calculation takes a few minutes on a P IV 1.9 GHz Computer. In order to ensure convergence, adaptive mesh refinement was applied. The simulation results agree very well with the published results.
Figure 2: Simulated and publish VSWR for the printed Dipole Antenna
Figure 3 shows the farfield of the antenna at 2.45 GHz. The radiation pattern is very close to the pattern of an ideal dipole.
Figure 3: Farfied of the pronted Dipole at 2.45 GHz
To demonstrate the parameter sweep capabilities of CST MWS, the length ld of the dipole arms was changed. Since the settings for the mesh expert system were already found with the first adaptive mesh refinement, a parameter change does not require any additional convergence checks. Figure 4 shows the VSWR for different dipole lengths.
Figure 4: VSWR for different Dipole Length.
CST Article "Printed Dipole Antenna with Integrated Balun"
last modified 10. Feb 2012 6:41
printed 10. Feb 2012 6:41, Article ID 55
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Article ID: 55
Last modified: 10. Feb 2012 6:41
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