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Compact Wide Single-/Dual- Band Bandpass Filter with Equal Inductance Configuration in Thin Film IPD Technology
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  • ZhiHao Liu,
  • Bao-Guang Liu,
  • Chong-Hu Cheng,
  • Yong Cheng
ZhiHao Liu
Nanjing University of Posts and Telecommunications
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Bao-Guang Liu
Nanjing University of Posts and Telecommunications
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Chong-Hu Cheng
Nanjing University of Posts and Telecommunications
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Yong Cheng
Nanjing University of Posts and Telecommunications

Corresponding Author:chengy@njupt.edu.cn

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Abstract

In this paper, based on thin film integrated passive device (TF-IPD) technology, compact ultra-wideband (UWB) bandpass filter (BPF) and dual-band bandpass filter (DBBPF) with equal inductance configuration are proposed. The configuration of equal inductance in a circuit contributes to reducing variables, simplifying the physical structure, and shortening the debugging time in the TF-IPD design process. Despite all the inductors being equal in value, wide passband can still be achieved. The measured results show that the center frequency of UBW BPF is 11.43 GHz, the 3-dB fractional bandwidth (FBW) is 133% (3.87 GHz-18.99 GHz). And the 3-dB FBWs of DBBPF centered at 6.5 GHz and 16.2 GHz are 92% (3.51-9.49 GHz) and 35% (13.33-18.98 GHz), respectively. The stopband of UBW BPF and DBBPF can be extended to 47.7 GHz and 44.8 GHz in sizes of 321 um × 856 um and 235 um × 846 um, respectively (excluding measuring pads).
13 Mar 2024Submitted to Electronics Letters
14 Mar 2024Submission Checks Completed
14 Mar 2024Assigned to Editor
14 Mar 2024Review(s) Completed, Editorial Evaluation Pending
22 Mar 2024Reviewer(s) Assigned
07 Jun 2024Editorial Decision: Revise Minor
20 Jun 20241st Revision Received
15 Jul 2024Review(s) Completed, Editorial Evaluation Pending
15 Jul 2024Editorial Decision: Accept