Harmonic suppressed coupled stepped-impedance resonator based dual-band tunable bandpass filter
نویسندگان
چکیده
منابع مشابه
A Tunable Bandpass Filter Using the Stepped Impedance Resonator with Harmonic Suppression
Stepped impedance resonator with harmonic suppression and capability of frequency tuning have been incorporated into a bandpass filter design. A tapped-in U-shaped feed structure is introduced in the design to suppress harmonic and to reduce the passband insertion losses. The passband flexibility is accomplished by using a pair of tuning varactors. A simple method to implant a zero in the frequ...
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© 2013 ETRI Journal, Volume 35, Number 2, April 2013 This letter presents a compact dual-mode tri-band bandpass filter by using a short-circuited stub-loaded stepped-impedance resonator (SIR) and a short-circuited stub-loaded uniform impedance resonator. Also, a hairpin SIR geometry is introduced to miniature the size of this filter while maintaining excellent performance. The use of a short-ci...
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Designing of dual-band bandpass filters has become wide spreading to support wireless communication system standards including WLANs [1-6]. Although they have presented new structures for reducing size by using a quarter wavelength structure in [1-3], meandered resonator to increase coupling value for high selectivity [4-5], and interdigital capacitors between resonators for high selectivity, t...
متن کاملWideband Bandpass Filter Using Stepped Impedance Resonator with Susceptibility Test
A stepped impedance resonator (SIR) based wideband bandpass filter (BPF) with a good rejection level in the extended upper stopband is presented in this article. The proposed SIR is found to have the ability to introduce two transmission poles in the passband. By appropriately selecting the impedance ratio and length ratio (α) of the SIRs, the BPF can provide a wide passband and a sharp rejecti...
متن کاملCompact Dual-Band Bandpass Filter Based on Quarter Wavelength Stepped Impedance Resonators
This paper presents a compact dual-band bandpass filter that involves using the quarter wavelength stepped impedance resonators (SIRs) for achieving simultaneously compact circuit size and good dual-band performance. The filter is designed at 2.4 / 3.5 GHz and constructed by two pairs of quarter wavelength SIRs and source-load lines. By properly tuning the impedance ratio, length ratio and radi...
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ژورنال
عنوان ژورنال: Engineering Science and Technology, an International Journal
سال: 2017
ISSN: 2215-0986
DOI: 10.1016/j.jestch.2017.09.006