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Waveguide filters using T-shaped resonators

Waveguide filters using T-shaped resonators

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© The Institution of Engineering and Technology
Published

An enhanced waveguide E-plane bandpass filter using T-shaped resonators is presented. Characteristics of the proposed filter structure are analysed and investigated. The proposed filter with 4.5 % bandwidth is designed at 9.45 GHz, fabricated and tested. Its performance is evaluated through measurements, the experimental results obtained show that the proposed bandpass filter structures improve selectivity and size compared with those obtained using a conventional E-plane filter structure. A size reduction of more than 12 % was achieved and selectivity performance improved by more than 60 dB.

Inspec keywords: waveguide filters; band-pass filters; resonator filters

Other keywords: waveguide filters; frequency 9.45 GHz; T-shaped resonators; E-plane bandpass filter

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

References

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      • A.E. Atia , A.E. Williams . Nonminimum-phase optimum-amplitude bandpass waveguide filters. IEEE Trans. Microw. Theory Tech. , 4 , 425 - 431
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      • Fahmi, M., Ruiz-Cruz, J.A., Mansur, R.R., Zaki, K.A.: `Compact ridge waveguide filters using non-resonating nodes', IEEE Int. Microwave Symp., June 2009, Boston, MA, USA, p. 1337–1340.
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      • S. Amari , J. Bornemann . Using frequency-dependent coupling to generate finite attenuation poles in direct-coupled resonator bandpass filters. IEEE Microw. Guid. Wave Lett. , 10 , 404 - 406
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