диафрагмированные волноводные фильтры / 10e15757-c75c-49fd-950f-c1666dd3f5e7
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[3] Kahrizi, M. , Safavi-Naeini, S., and Chaudhuri, S.K." Computer diagnosis and tuning of microwave filters using model-based parameter estimation and multi-level optimization", ZEEE MTT-S International Microwave Symposium Digesr, Volume 3,2000, pp. 1641 -1644.
[4] Hong Jia-Sheng, Lancaster M J. Microstrip Filters for RF / Microwave Application[M] . New York: A Wiley Interscience Publication, 2001.
[5] K. R. Sturley, Radio Receiver Design. London, U. K.: Chapman & Hall, 1945, ch. 7.
Fig.lO |
The structure of the E-plane T-junction cavity diplexer |
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Graph J |
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-A--OB(IS(2,2)1) |
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Schematic 1 |
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-20 |
-B- OB(IS(2,3)1) |
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Schematic 1 |
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-+- OB(IS(2,1)1) |
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-40 |
Schematic 1 |
-60 |
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-80 |
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14.2 |
14.5 |
14.8 |
15.1 |
15.3 |
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Frequency (GHz) |
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Fig.ll |
S-parameters of the diplexer by simulation |
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V. CONCLUSION
The results in this paper show that the proposed diplexer can provide very small insertion loss and good isolation between the output ports. Furthermore, the derived circuit model provides a very good estimate of the actual full-wave simulation response of the novel diplexer presented in this paper which is based on the cylindrical cavity resonator. A General design strategy is also proposed for this type of diplexers and has been tested for different design specifications. This strategy is simple and has been shown to yield accurate results.
REFERENCES
[1]Atia, Walid A, Zaki, Kawthar A., and Atia, Ali E. , " Synthesis of general topology multiple coupled resonator filters by optimization", ZEEE MTT-S International Microwave Qmposium Digest., 1998, pp. 82 1-824.
[2]Mattaei G, Young L , Jones E M 1. Microwave Filters , Impedance-matching Networks and Coupling Structures [M]. New York : Mc-Graw-HiII , 1964.
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