Abstract
This letter presents a half-mode triple-band bandpass filter based on folded stepped impedance resonator stub. Also, an interdigital structure with lumped capacitance is added to the circuit to obtain a compact-size filter while maintaining the filtering characteristics. The utilization of the lumped capacitor at the middle point of the interdigital structure contributes to the shift down of the higher modes. Thus, an extra passband generates at the operating frequency range. Also, more reduced size is achieved by using a half-mode circuit.
Keywords
Passband
Band-pass filter
Resonator
Acoustics
Electrical impedance
Stub (electronics)
Capacitor
Materials science
Capacitance
Stopband
Electronic engineering
Optoelectronics
Electrical engineering
Physics
Engineering
Voltage
Subject Areas
Microwave Engineering and Waveguides
·Electrical and Electronic Engineering ·Physical Sciences
Advanced Antenna and Metasurface Technologies
·Aerospace Engineering ·Physical Sciences
Antenna Design and Analysis
·Aerospace Engineering ·Physical Sciences
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