Esmail Zarezadeh
Khatam-al-Anbia University, Tehran
[ 1 ] - Miniaturized High-Pass Filter Based on Balanced Composite Right-Left Handed Transmission Line Using Meander Spiral Complementary Split Ring Resonators
In this paper, a compact high-pass filter (HPF) with a sharp rejection response based on the balanced composite right-left handed (CRLH) transmission line (TL) concept is proposed. A series LC resonator using an interdigital capacitor and meander lines is designed. Also, a meander spiral complementary split ring resonator (MSCSRR) is used to realize the parallel LC resonator. The high-pass filt...
[ 2 ] - A Compact Ultra-Wideband Filter Based on Left Handed Transmission Line by Using Complementary Split Ring Resonators and Series Capacitor
A compact and sharp rejection UWB microstrip bandpass filter is developed using left handed metamaterials. For realizing a backward-wave propagation medium, two split ring resonator (CSRR) in the back substrate side and also one series capacitor etched in the host line, are used to produce a negative effective ε and μ, simultaneously. Moreover, in the proposed structure, two doublets parallel c...
[ 3 ] - A Novel Compact Dual Notch Band Filter Based on Metamaterial Concept
Using composite right-left handed (CRLH) transmission line concept, a novel miniaturized dual notch band filter (DNBF) is proposed. The suggested DNBF consists of an interdigital transmission line (ITL), split ring resonators (SRRs) and complementary split ring resonators (CSRRs). Since the resonance frequency of the SRRs and CSRRs are quite independent of each other, the dual notch bands of th...
[ 4 ] - ارائه الگوریتم جدید مبتنی بر مدل مخلوط گوسی با استفاده از ویژگیهای ضرایب کپسترال نرمالیزه شده توانِ بر مبنای فیلتر کاکلی در سیستم تصدیق هویت گوینده
در این مقاله، یک الگوریتم استخراج ویژگیِ مبتنی بر سیستم شنوایی، بر اساس یک تبدیل زمانی- فرکانسی به نام تبدیل شنوایی (AT) و ضرایب کپسترال نرمالیزه شده توان(PNCC)، که یک ویژگی موفق در زمینه تشخیص گفتار و گوینده بوده است، پیشنهاد میگردد. به طور معمول عملکرد مدلهای صوتی که توسط دادههای بدون نویز(تمیز) آموزش داده میشوند، وقتی در شرایط نویزی مورد آزمایش قرار میگیرند به طور فزایندهای کاهش مییابد...
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