Double-layer suspended stripline resonator with high quality factor for base-station diplexer application

作者：Xia, Lei; Song, Lei; Wu, Bian^*; Bo, Xiaodong; Chen, Jianzhong

来源：Electronics Letters, 2018, 54(8): 513-514.

DOI：10.1049/el.2018.0388

• strip line resonators
• Q-factor
• multiplexing equipment
• UHF resonators
• double-layer suspended stripline resonator
• high quality factor
• base-station diplexer application
• DSSL resonator
• high unloaded quality factor
• metal strips
• metallic via hole
• air-filled cavity
• single-layer suspended stripline resonator
• identical resonant frequency
• resonance characteristics
• parametric analysis
• channel centre frequencies
• frequency 1
• 95 GHz
• frequency 2
• 14 GHz
• bandwidth 600 MHz

A novel double-layer suspended stripline (DSSL) resonator with high unloaded quality factor is proposed. The DSSL resonator consists of a thin substrate with metal strips on both sides connected by a metallic via hole suspended in the centre of an air-filled cavity, which leads to a much higher unloaded quality factor than the conventional single-layer suspended stripline resonator with an identical resonant frequency. The resonance characteristics of the DSSL resonator are parametric analysed. For demonstration, a compact diplexer for base-station application with channel centre frequencies at 1.95 and 2.14 GHz and absolute bandwidths of 60 MHz is designed, fabricated and measured. The synthesised, simulated and measured results show a good agreement.

• 出版日期2018-4-19
• 单位西安电子科技大学