Yazar "Köprü, Ramazan" için MF - Bildiri Koleksiyonu | Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering 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 ... -
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 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 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 ... -
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 ... -
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 ... -
A low loss, low voltage and high Q active inductor with multi-regulated cascade stage for RF applications
Momen, Hadi Ghasemzadeh; Yazgı, Metin; Köprü, Ramazan (Institute of Electrical and Electronics Engineers Inc., 2015)Numerous structural planning of active inductors have been proposed as of not long ago in literature which showing tuning conceivable outcomes, low chip area and offering integration facility, they constitute promising ... -
A method for low-pass filter designing by commensurate transmission lines
Köprü, Ramazan; Momen, Hadi Ghasemzadeh (IEEE, 2016)It is well known that the complex Richards-Plane is a transformed domain of Laplace-Plane which is obtained under a tangent hyperbolic mapping. Network functions generated in terms of Richards's frequency are periodic in ... -
Mixed element wideband microwave amplifier design via simplified real frequency technique
Kılınç, Sedat; Köprü, Ramazan; Aksen, Ahmet; Yarman, Bekir Sıddık Binboğa (IEEE Computer Society, 2014)In this study, we illustrate the design and implementation of a wideband microwave small-signal amplifier composed of mixed elements. The design is based on Simplified Real Frequency Technique (SRFT). A design of low power ... -
A new high performance CMOS active inductor
Köprü, Ramazan; Momen, Hadi Ghasemzadeh; Yazgı, Metin; Saatlo, Ali Naderi (IEEE, 2016)A new high-performance active inductor with ability to tune its self-resonance frequency and quality factor without affecting each other is presented in this letter. Using the input transistor of active inductor in cascoding ... -
Richards uzayında band geçiren devre fonksiyonu gerçeklemesi ve yama anten uyumlaştırmada kullanımı
Köprü, Ramazan; Aydın, Çağatay; Yarman, Bekir Sıddık Binboğa (IEEE, 2014-04-23)Literatürde çok iyi bilinmektedir ki, Richards-düzlemi, Laplace-düzleminde tanjant hiperbolik eşlemesi uygulanarak elde edilen dönüştürülmüş bir uzaydır. Richards frekansı cinsinden üretilen devre fonksiyonları gerçek ... -
Transformerless bandpass matching network design for Y-Shaped monopole antenna
Aydın, Çağatay; Atilla, Doğu Çağdaş; Karakuş, Cahit; Köprü, Ramazan; Yarman, Bekir Sıddık Binboğa (IEEE, 2015)In this paper, a transformerless bandpass matching network design procedure is presented. The Real Frequency Techniques are powerful numerical methods to design wideband lossless 2-port networks such that filters and ... -
A tunable inductance topology to realize frequency tunable matching networks and amplifiers
Atilla, Doğu Çağdaş; Aydın, Çağatay; Köprü, Ramazan; Nesimoğlu, Tayfun; Yarman, Bekir Sıddık Binboğa (IEEE, 2013)Coverage of commercial communication standards such as GSM, UMTS, Wi-Fi and Wi-Max within a single transceiver chip is one of the most desired properties by wireless communication manufacturers. In this regard, communication ... -
Unit element bandpass filter design via simplified real frequency technique for UWB microstrip patch antenna
Köprü, Ramazan; Kılınç, Sedat; Aksen, Ahmet; Yarman, Bekir Sıddık Binboğa (IEEE Computer Society, 2014)Design of a UWB (Ultra Wideband) microstrip patch antenna to operate in the first channel of the UWB standard and a bandpass (BP) UE (Unit Element) microstrip filter (BPUEF) for this antenna are studied and presented with ...