Compact 1.75-2.7 GHz Tunable BPF With Wide Stopband Up to 9.5 GHz Using Harmonic-Controlled SIDGS Resonators

• Published in: IEEE transactions on circuits and systems. II, Express briefs Vol. 69; no. 11; pp. 4228 - 4232
• Main Authors: Tang, Deshan, Qian, Huizhen Jenny, Dong, Yuandan, Luo, Xun
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.11.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Bandpass filters; Capacitance; Electrical grounding; Harmonic control; Harmonic-controlled; Impedance; Inductors; Insertion loss; Power transmission lines; Resonant frequencies; Resonant frequency; Resonators; substrate-integrated defected ground structure (SIDGS); Substrates; tunable bandpass filter (BPF); Tunable filters; Tuning; wide stopband

In this brief, a harmonic-controlled substrate-integrated defected ground structure (SIDGS) resonator with tuning capacitor is proposed for the design of tunable filter. Such resonator exhibits a harmonic-controlled characteristic. The fundamental resonant frequency can be properly tuned, while the...