Sterns M, Schneiderbanger D, Rehner R, Martius S, Schmidt LP (2008)
Publication Language: English
Publication Type: Conference contribution
Publication year: 2008
Publisher: Institute of Electrical and Electronics Engineers
Edited Volumes: IEEE MTT-S International Microwave Symposium Digest
City/Town: Atlanta
Pages Range: 1039-1042
Conference Proceedings Title: IEEE MTT-S International Microwave Symposium June
Event location: Atlanta, GA
DOI: 10.1109/MWSYM.2008.4633013
In this paper a novel tunable high isolation bandpass filter is presented. The filter consists of two shielded coplanar transmission lines coupled by a rectangular waveguide. Hexagonal ferrite spheres are used to cover a tuning frequency range from 50 to 80GHz. Measurement results up to 69GHz are shown. The measured insertion loss of the filter lies between 7.1 and 9.3dB. An off-resonance isolation better than 60dB is achieved what is extraordinarily high for a two spheres filter. The typical 3dB-bandwidth is about 250MHz. As planar transmission lines are used, the filter can be integrated into a coplanar or microstrip environment easily what is advantageous for the construction of highly integrated modules. The operating frequency range can be expanded up to 80GHz by replacing the 1.85mm-connectors by lmm-connectors or using other suitable waveguide transitions, thus covering considerably more bandwidth than rectangular waveguide based coupling structures. © 2008 IEEE.
APA:
Sterns, M., Schneiderbanger, D., Rehner, R., Martius, S., & Schmidt, L.-P. (2008). Novel Tunable Hexaferrite Bandpass Filter Based on Rectangular Waveguide Coupled Shielded Coplanar Transmission Lines. In IEEE MTT-S International Microwave Symposium June (pp. 1039-1042). Atlanta, GA: Atlanta: Institute of Electrical and Electronics Engineers.
MLA:
Sterns, Michael, et al. "Novel Tunable Hexaferrite Bandpass Filter Based on Rectangular Waveguide Coupled Shielded Coplanar Transmission Lines." Proceedings of the 2008 IEEE MTT-S International Microwave Symposium Digest, MTT, Atlanta, GA Atlanta: Institute of Electrical and Electronics Engineers, 2008. 1039-1042.
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