Design, analysis and simulation of a microstrip filtenna using pass band filter synthesis approach

Document Type : Original Article

Authors

Department of Electrical Engineering, University of Guilan, Rasht, Iran

Abstract

In this paper, the simulation, analysis and design of a filtering antenna (filtenna) has been presented. A rectangular microstrip antenna and a parallel-coupled half-wavelength resonator filter are combined together to design a filtenna. This structure has a substrate with dielectric constant of 2.6. The proposed structure form a forth order band-pass filter with Chebyshev response and center frequency of 2.45 GHz. First, a parallel-coupled half-wavelength resonator filter was designed using Filter Synthesis Approach, then a microstrip rectangular patch was used instead of the last resonator of filter to act not only as the last resonator of filter, but also as a radiating element. The 3-dB bandwidth of the structure is 260 MHz and the -10-dB bandwidth is equal to 10.5 percent. The proposed filtenna has a good out-of-band gain suppression, flat in-band gain, and well-shaped radiation pattern. The performance of the proposed filtenna has been simulated with HFSS.

Keywords

References

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