Yazar "Köprü, Ramazan" için listeleme
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0.8-1.9 GHz mikrodalga kuvvetlendirici tasarımı
Koç, Onur; Kılınç, Sedat; Köprü, Ramazan; Yarman, Bekir Sıddık Binboğa (IEEE, 2016-12-03)Günümüzde haberleşmede kullanılan iletişim araçlarının tasarımı büyük bir gelişim ve değişim göstermektedir. İletişim araçları birçok sistemden oluşmaktadır. Bu çalışmada iletişimin sağlanmasında büyük öneme sahip olan ... -
2W wideband microwave PA design for 824-2170 MHz band using normalized gain function method
Köprü, Ramazan; Kuntman, Hulusi Hakan; Yarman, Bekir Sıddık Binboğa (IEEE, 2013)In this work, we present the design of a 2W linear wideband microwave PA (power amplifier) targeted to operate in 824-2170 MHz mobile frequency range covering GSM850, EGSM, DCS, PCS and WCDMA. The design is basically based ... -
An accurate CMOS interface small capacitance variation sensing circuit for capacitive sensor applications
Momen, Hadi Ghasemzadeh; Yazgı, Metin; Köprü, Ramazan; Naderi Saatlo, Ali (Springer Birkhauser, 2017-12)In this paper, an accurate front-end CMOS interface circuit for sensing very small capacitance changes in capacitive sensors is presented. The proposed structure scales capacitance variation to the sensible impedance ... -
Broadband matching of PA-To-PCB interconnection for X-band wireless power transfer
Köprü, Ramazan (Institute of Electrical and Electronics Engineers Inc., 2019-08)Design and simulation of a microwave wideband microstrip unit element bandpass matching network is presented, potential use might be a broadband WPT (microwave wireless power transfer) application in X-band frequencies ... -
CMOS high-performance UWB active inductor circuit
Momen, Hadi Ghasemzadeh; Yazgı, Metin; Köprü, Ramazan; Saatlo, Ali Naderi (Institute of Electrical and Electronics Engineers Inc, 2016)In order to maximize efficiency of the designed gyrator-based active inductor, advanced circuit techniques are used. Loss and noise are most important features of the AIs, where they should be low enough to have high-performance ... -
Computer aided darlington synthesis of an all purpose immittance function
Aksen, Ahmet; Yarman, Bekir Sıddık Binboğa; Köprü, Ramazan; Kumar, Narendra Senthil; Aydın, Çağatay; Atilla, Doğu Çağdaş; Chacko, Prakash (Istanbul University, 2016)This work is the continuation of our high precision immittance synthesis paper series introduced in IEEE TCAS-I. In the present manuscript, we modified the previously introduced high precision Bandpass LC-ladder synthesis ... -
Computer aided high precision Darlington synthesis for real frequency matching
Aksen, Ahmet; Yarman, Bekir Sıddık Binboğa; Köprü, Ramazan; Aydın, Çağatay; Atilla, Doğu Çağdaş (Institute of Electrical and Electronics Engineers Inc, 2014)In this work, we introduce a high precision synthesis algorithm to include the extraction of finite frequency and right half plane (RHP) transmission zeros of an impedance function as Brune/Darlington Type-C sections. After ... -
Design and implementation of wideband microwave amplifiers based on Normalized Gain Function
Köprü, Ramazan; Kılınç, Sedat; Aksen, Ahmet; Yarman, Bekir Sıddık Binboğa (Institute of Electrical and Electronics Engineers Inc., 2014)In this work, we introduce the design and implementation of wideband microwave amplifiers based on "Normalized Gain Function (NGF)" method. Normalized Gain Function is defined as the ratio of desired shape or frequency ... -
Design and realization of 8-12 GHz cascaded unit element microstrip filter for X-band
Köprü, Ramazan; Atilla, Doğu Çağdaş; Aydın, Çağatay; Kılınç, Sedat; Yarman, Bekir Sıddık Binboğa (IEEE, 2016)Design of a wideband cascaded unit element microstrip bandpass filter (UEBPF) operating along the whole X-band (8-12 GHz) is presented with satisfactory agreement between theoretical and measurement results. Simplified ... -
Design and realization of wideband matching networks in Richards domain
Köprü, Ramazan; Kılınç, Sedat; Yarman, Bekir Sıddık Binboğa (Institute of Electrical and Electronics Engineers Inc, 2014)A broadband matching network design is given with its simulation and prototype measurement results. The circuit contains certain number of cascaded unit-elements (UEs) and open-stubs which behave as Richards capacitors. ... -
Design of a new low loss fully CMOS tunable floating active inductor
Momen, Hadi Ghasemzadeh; Yazgı, Metin; Köprü, Ramazan; Saatlo, Ali Naderi (Springer New York LLC, 2016-12)In this paper, a new tunable floating active inductor based on a modified tunable grounded active inductor is proposed. The multi regulated cascade stage is used in the proposed active structure to decrease the parasitic ... -
Design of tunable amplifier using digital capacitors
Atilla, Doğu Çağdaş; Aydın, Çağatay; Nesimoğlu, Tayfun; Köprü, Ramazan; Aksen, Ahmet; Yarman, Bekir Sıddık Binboğa (IEEE, 2014)In recent days, radio manufacturers are increasingly interested in broadband amplifiers for cellular communication. Demands of customers enforce manufacturers to develop systems compatible for all standards and it is ... -
A design technique of 50 Ω terminated bandpass matching network and its implementation to a Y-shaped monopole antenna matching
Aydın, Çağatay; Atilla, Doğu Çağdaş; Köprü, Ramazan; Kılınç, Sedat; Karakuş, Cahit; Yarman, Bekir Sıddık Binboğa (Springer, 2016-12)In this paper, a 50 Ω terminated or in other words transformerless bandpass matching network design methodology and an implementation example are presented. The real frequency techniques are powerful numerical methods to ... -
A design technique of 50 Ω terminated bandpass matching network and its implementation to a Y-shaped monopole antenna matching
Aydın, Çağatay; Atilla, Doğu Çağdaş; Köprü, Ramazan; Kılınç, Sedat; Karakuş, Cahit; Yarman, Bekir Sıddık Binboğa (Springer New York LLC, 2016-12)In this paper, a 50 Ω terminated or in other words transformerless bandpass matching network design methodology and an implementation example are presented. The real frequency techniques are powerful numerical methods to ... -
Designing a new high Q fully CMOS tunable floating active inductor based on modified tunable grounded active inductor
Yazgı, Metin; Momen, Hadi Ghasemzadeh; Köprü, Ramazan (Institute of Electrical and Electronics Engineers Inc, 2015)A new Tunable Floating Active Inductor (TFAI) based on modified Tunable Grounded Active Inductor (TGAI) is proposed. Multi regulated cascade stage is used in TGAI to boost gain of input impedance and inductor value thus ... -
Distributed wideband power amplifier using reactive coupled line feedback structure
Amin, Hamid Yadegar; Özoğuz, Serdar; Köprü, Ramazan; Yarman, Bekir Sıddık Binboğa (Institute of Electrical and Electronics Engineers Inc, 2015)A wideband and flat gain distributed power amplifier using a GaN high electron mobility (HEMT) transistor has been designed. The frequency range covers 700 MHz to 4.5 GHz. The small signal gain has the average value of 10 ... -
An eclectic approach to design tunable amplifiers
Nesimoğlu, Tayfun; Aydın, Çağatay; Atilla, Doğu Çağdaş; Köprü, Ramazan; Yarman, Bekir Sıddık Binboğa (Wiley-Blackwell, 2013-07)Broadband amplifiers that can accommodate commercial communication standards such as GSM, UMTS, Wi-Fi, and Wi-Max are extremely important for radio equipment manufacturers. To achieve this coverage, the amplifier should ... -
FSRFT - Fast simplified real frequency technique via selective target data approach for broadband double matching
Köprü, Ramazan (IEEE, 2017-02)This brief introduces a broadband double-matching (DM) solver called fast simplified real frequency technique (FSRFT). FSRFT is essentially a greatly accelerated variant of the well-known classical simplified real frequency ... -
FSRFT Based broadband double matching via passband extremums determination
Köprü, Ramazan (2018-07-23)Fast simplified real frequency technique (FSRFT) is a numerical solver used to solve microwave broadband doublematching (DM) circuit design problems in a much faster and effective manner. Recently, it has been reported ... -
A high precision Cascade Synthesis Technique for real frequency matching involving Brune and Darlington Type-C sections
Yarman, Bekir Sıddık Binboğa; Aksen, Ahmet; Köprü, Ramazan; Aydın, Çağatay; Atilla, Doğu Çağdaş (IEEE, 2014)In this work, we introduce a high precision cascade synthesis technique for lossless matching networks involving Brune and Darlington Type-C sections. In the present manuscript, we generalized our previously introduced ...