Optimization-Free Design Equations for Narrowband Equal-Division Filtering Power Divider With Pre-Specified Filtering Response and Wideband Isolation
| Autor: | Boyoung Lee, Seunggoo Nam, Juseop Lee |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Admittance
Computer science 020208 electrical & electronic engineering 02 engineering and technology Communications system Resonator Narrowband Hardware and Architecture 0202 electrical engineering electronic engineering information engineering Electronic engineering Power dividers and directional couplers Electrical and Electronic Engineering Wideband Passband Electronic circuit |
| Zdroj: | IEEE Transactions on Circuits and Systems I: Regular Papers. 66:2496-2507 |
| ISSN: | 1558-0806 1549-8328 |
| DOI: | 10.1109/tcsi.2019.2898465 |
| Popis: | In this paper, we present completely analytic design equations for a narrowband filtering power divider with an excellent isolation performance over a wide frequency range. For providing the complete design equations, the even–odd mode analysis on the circuits has been carried out. The design theory and equations allow a filtering power divider containing frequency-independent inverters to have infinite isolation over the entire frequency range. The presented design theory is significant in a sense that it enables designing a filtering power divider with a high isolation over a wide frequency range when the divider contains frequency-variant inverters in practice. Using the closed-form equations, all circuit element values and detailed physical dimensions of filtering power divider can be found based on a pre-specified filtering response. Therefore, our design method can provide a filtering power divider design guideline for the various specifications required by communications systems. For verifying the presented design method and analytic design equations, a third-order lumped-element narrowband filtering power divider has been designed, fabricated, and measured. We have also implemented a filtering power divider using microstrip resonators to verify that the presented design method and equations can be applied to distributed-element filtering power divider designs. The measured results have shown a good agreement with theoretical results. |
| Databáze: | OpenAIRE |
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