Details

Autor(en) / Beteiligte

• Luo, Xian-Hu
• Cheng, Xu
• Han, Jiang-An
• Zhang, Liang
• Deng, Xian-Jing

Titel

Miniaturized on-chip lowpass filters with wide stopband and sharp roll-off

Ist Teil von

• 2019 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 2019, p.1-3

Ort / Verlag

IEEE

Erscheinungsjahr

2019

Quelle

IEEE/IET Electronic Library (IEL)

Beschreibungen/Notizen

• In this paper, a compact on chip lowpass filter with wide stopband and sharp roll-off using multi-stage pi-section low-pass cell circuit is presented. In order to obtain the characteristics of wide stopband and sharp roll-off for lowpass filters (LPFs), the pi-section low-pass cell circuit is analyzed and adopted, which is useful and convenient to produce transmission zeros for LPFs. Finally, a third-order LPF and a fourth-order LPF are manufactured and the measurement results show that the filter it has the -3 dB cut-off frequency at 5 GHz, while its insertion loss is less than 1 dB. In addition, the LPFs achieves more than 35 dB sideband suppression format form 6.3 GHz to 40 GHz. The LPFs size are very compact less than 0.41 mm×1.1 mm (0.02λg×0.05λg) including the pads. ( λg is the guided wavelength at 5 GHz).