| Autor: |
Litvintsev, Sergii, Zakharov, Alexander |
| Předmět: |
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| Zdroj: |
Radioelectronics & Communications Systems; Jun2024, Vol. 66 Issue 6, p315-321, 7p |
| Abstrakt: |
This paper discusses N-order bandpass filter (BPF) with all mixed couplings between adjacent resonators, and between end resonators and loads. It has (2N + 1) transmission zeros (TZ) at real frequencies. To the existing (N + 1) TZs generated by mixed couplings, another N TZs are added, which generated by resonators with special properties. Each such resonator is a λ/4 resonator, in which the connection point is located relatively close to the short-circuited end. In this case, the input admittance of the resonator Y(jω) has a pole ωp, which is located to the right and at a small distance from the main resonant frequency ω0. This pole ωp of the Y(jω) function leads to the appearance of a right-handed TZ in a BPF characteristic. If we use N resonators with different connection points, then N additional TZs will appear. The design of that BPF is considered. The measured and simulated frequency responses of the second-order BPF with 5 TZs are presented. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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