Compact resonant bandpass filter based on PBG structure

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Compact resonant bandpass filter based on PBG structure

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Published

A new resonant bandpass filter based on a photonic band gap (PBG) structure is designed and optimised. The finite-difference time-domain method is applied to characterise the proposed filter. The filter is much easier for fabrication, more compact and simpler to design than the conventional parallel-coupled line filter, has wide stopband and steep and deep upper bandstop. The filter length is about one guiding wavelength (λe). A semiconductor-based structure is realised using microelectronics technology and good agreement between the experimental and simulation results has been achieved.

Inspec keywords: microstrip filters; microwave filters; photonic crystals; band-pass filters; passive filters; MMIC

Other keywords: K-band filter; periodical rhombus microstrip; compact resonant bandpass filter; slow-wave characteristics; FDTD method; PBG structure; planar filter; photonic band gap structure; semiconductor-based structure; semiconductor substrate

Subjects: Passive filters and other passive networks; Waveguide and microwave transmission line components; Microwave integrated circuits

References

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      • Lopetegi, T.: `Bandpass filter in microstrip technology using photonic bandgap reflector', 29thEuropean Microwave Conf., 1999, Munich, Germany, p. 337–340.
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      • E. Yablonovitch . Inhibited spontaneous emission in solid-state physics and electronics. Phys. Rev. Lett. , 20 , 2059 - 2062
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