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Yayın A broadband microwave amplifier design by means of immittance based data modelling tool(IEEE, 2002) Kılınç, Ali; Pınarbaşı, Hacı; Şengül, Metin; Yarman, Bekir Sıddık BinboğaIn this paper a practical broadband microwave amplifier design algorithm is introduced utilizing the immittance data-modelling tool. In the course of design, first, the optimum input and output terminations for the active device are produced employing the real frequency technique. Then, these terminations are modelled utilizing the new immittance-modelling tool to synthesize the front-end and back-end matching networks. An example is included to exhibit the implementation of the proposed design algorithm to construct a single stage BJT amplifier over a wide frequency band. It is expected that the proposed design algorithm will find applications to realize wideband microwave amplifiers put on MMIC for mobile communication.Yayın Microwave amplifier design for mobile communication via immittance data modelling(IEEE, 2003) Kılınç, Ali; Pınarbaşı, Hacı; Yarman, Bekir Sıddık Binboğa; Aksen, AhmetIn this paper, a practical broadband microwave amplifier design algorithm based on immittance data modelling is presented. In the course of design, first, the optimum input and output terminations for the active device are produced employing the real frequency technique. Then, these terminations are modelled utilizing the new immittance-modeling tool to synthesize the front-end and back-end matching networks. An example is included to exhibit the implementation of the proposed design algorithm to construct a single stage wideband microwave amplifier over a wide frequency band. It is expected that the proposed design algorithm will find applications in the design of microwave amplifiers put on MMIC for mobile communication.Yayın Reflectance data model with mixed lumped and distributed elements for wireless communication systems(IEEE, 2005) Yarman, Bekir Sıddık Binboğa; Şengül, Metin; Kılınç, Ali; Aksen, AhmetIn this paper, a new method is presented to model the given reflectance data obtained from a "passive one-port physical device", as a lossless two port consists of lumped and distributed elements. Basis of the new method rests on the interpolation of the given data as a realizable bounded-real (BR) reflection function in two variables. The desired circuit model is then obtained as the result of the synthesis of this function in two kinds of elements; namely, distributed and lumped circuit elements. An algorithm is presented to generate the circuit model step by step and an example is also included to exhibit the utilization of the new modeling algorithm.Yayın High precision LC ladder synthesis part ıı: Immittance synthesis with transmission zeros at DC and infinity(IEEE-INST Electrical Electronics Engineers Inc, 2013-10) Yarman, Bekir Sıddık Binboğa; Kılınç, AliIn this paper, a novel, high precision bandpass LC ladder synthesis algorithm is presented. The new algorithm directly works on the rational form of a positive real driving point input immittance F(p) = a(p)/b(p) which describes a bandpass LC ladder network in resistive termination. In the new method, firstly, poles at p = 0 are removed from F(p), then remaining poles at infinity are extracted. After each pole extraction, coefficients of the polynomial a(p) and b(p) are refined employing the parametric approach to yield an exact bandpass LC ladder which in turn prevents the accumulation of the numerical errors in the course of synthesis. Thus, at the end of synthesis process, a bandpass LC ladder is obtained with high numerical precision.
