Millimetre-wave low-temperature co-fired ceramic bandpass filter with independently controllable dual passbands
作者： Yun‐Li Li , Jian‐Xin Chen , Wei Qin , Qing‐Yuan Lu , Zhi‐Hua Bao
DOI: 10.1049/IET-MAP.2016.0946
关键词:
摘要: This study presents a detailed investigation on the frequency properties of stub-loaded stepped-impedance resonator (SIR). For first time, controllability third and fifth harmonic resonant frequencies (f 3 f 5) SIR under different ratios impedance electric length is subjected to complete theoretical analysis. It can be found that there ratio which makes voltage-null point at never affected by change ratio. Furthermore, stub loaded this also has no effect 3. These features are successfully applicable realise independent control for dual-band bandpass filters (BPFs). In situation, new coupling path through constructed only 5, coefficients two bands individually varied. Accordingly, both operational bandwidths separately adjusted. demonstration, an independently controllable BPF operating 27.5/33 GHz designed fabricated millimetre-wave wireless applications. Good accordance achieved between simulated measured results.
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