Now showing items 1-9 of 9

  • Broadband double-matching via lossless unsymmetrical lattice networks 

    Authors:Şengül, Metin Y.
    Publisher and Date:(Istanbul University, 2012)
    In this paper a broadband double-matching network design algorithm has been presented. In the network an unsymmetrical lattice network has been used. The branch impedances of the lattice network are composed of singly terminated lossless LC networks. After giving the procedure its usage has been illustrated via an example.

  • Broadband matching via reflection function optimization 

    Authors:Şengül, Metin Y.
    Publisher and Date:(Wiley, 2017)
    In this paper a practical approach is presented for designing broadband matching networks via reflection function optimization. In the proposed algorithm the input or output reflection function of the matching network is expressed in terms of three real polynomials describing the matching network load and generator reflection coefficients. Next one of the polynomials is optimized to get minimum reflection function values in the passband. Then matching network topology and element values are obtained ...

  • Broadband Matching via Unequal Length Cascaded Transmission Lines 

    Authors:Şengül, Metin Y.
    Publisher and Date:(World Scientific Publ Co Pte Ltd, 2017)
    In this paper a new approach based on the real frequency technique (RFT) has been proposed to solve broadband matching problems using cascaded unequal length transmission lines. At the end of the design process optimum characteristic impedance and delay values of transmission lines are obtained. Two examples are given to illustrate the utilization of the proposed approach.

  • Design of broadband single matching networks 

    Authors:Şengül, Metin Y.
    Publisher and Date:(Elsevier GMBH Urban & Fischer Verlag, 2009)
    In general commercially available software tools are preferred to design broadband matching networks for wireless communication systems. But they need a properly selected matching network topology with good initial element values. Therefore in this paper a new real frequency technique is presented to generate broadband single matching networks with suitable initial element values. In the proposed method load impedance is written in terms of ABCD-parameters of the desired matching network and the ...

  • Design of practical broadband matching networks with commensurate transmission lines 

    Authors:Şengül, Metin Y.
    Publisher and Date:(Elsevier GMBH Urban & Fischer Verlag, 2013)
    To design broadband matching networks for microwave communication systems commercially available computer aided design (CAD) tools are always preferred. But these tools need proper matching network topology and element values. Therefore in this paper a practical method is proposed to generate distributed-element matching networks with good initial element values. Then the gain performance of the designed matching network can be optimized employing these tools. The utilization of the proposed method ...

  • Design of Practical Broadband Matching Networks With Lumped Elements 

    It is always preferable to use commercially available software tools to design broadband matching networks for microwave communication systems. However for these tools the matching network topology and element values must be selected properly. Therefore in this paper a practical method is presented to generate matching networks with good initial element values. Eventually the performance of the designed matching network is optimized by employing the commercially available computer-aided design ...

  • Design of Practical Broadband Matching Networks With Mixed Lumped and Distributed Elements 

    Computer-aided design (CAD) tools are always preferred for designing broadband matching networks. However these tools give excellent results when the suitable matching network topology and initial element values are provided. Therefore in this brief a new initialization algorithm is proposed to get suitable network topology and element values for CAD tools. Then the power transfer capability of the matching network can be improved by using any CAD tool. It is clear from the example studied that ...

  • Design of practical matching networks with lumped elements via modeling 

    Authors:Yarman, Sıddık Binboğa; Şengül, Metin Y.; Kilinç, Ali
    Publisher and Date:(IEEE, 2007)
    It is a common practice to utilize commercially available software tools to design matching networks for wireless communication systems. Most of these tools require a properly selected matching network topology with good initial element values. Therefore in this paper a practical method is presented to generate matching networks with initial element values. In the implementation process of the proposed method first the driving point immitance data for the matching network is obtained in a straight ...

  • Reflection Modeling Based Broadband Matching Network Design 

    Authors:Şengül, Metin Y.
    Publisher and Date:(Walter De Gruyter, 2017)
    In this paper a new broadband matching network design approach based on reflection modeling is proposed which has two parts: impedance data generation and modeling. In the approach firstly the output impedance data of the matching network is obtained to get the desired flat transducer power gain in the passband. Next the output reflection data are calculated using the obtained impedance data then they are modeled as a bounded real function. Then this function is synthesized and the desired lossless ...