[案例]紧凑型HRS IPD N77带通滤波器

A compact bandpass filter (BPF) has been developed and fabricated using high-resistivity silicon (HRS) integrated passive device (IPD) technology. The core component of the BPF is designed with a source-load coupling network, which facilitates the generation of transmission zeros on both sides of the passband. To improve high-frequency stopband rejection and ensure impedance matching between the source-load coupling network and the load, a cascaded lumped Pi-type network has been integrated into the design. The layout of the design employs high-Q tapered spiral inductors, which are utilized to minimize insertion loss. To evaluate the performance of the design, an on-chip filter operating within the 5G N77 band has been fabricated, achieving compact dimensions of 1 × 0.5 mm2. Measurement results indicate that the BPF attains an N77 in-band insertion loss of less than 1.7 dB and a 3-dB fractional bandwidth exceeding 61.3 %, along with an out-of-band rejection of 23.4 dB at the LTE band 3 uplink frequency.

该成果使用了法动科技射频EDA工具-Ultr ..

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