Novel approach to design ultra wideband microwave amplifiers: Normalized gain function method

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Tarih

2013-09

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Spolecnost Pro Radioelektronicke Inzenyrstvi

Erişim Hakkı

info:eu-repo/semantics/openAccess

Araştırma projeleri

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Özet

In this work, we propose a novel approach called "Normalized Gain Function (NGF) method" to design low/medium power single stage ultra wide band microwave amplifiers based on linear S parameters of the active device. Normalized Gain Function T-NGF is defined as the ratio of T and vertical bar S-21 vertical bar(2), desired shape or frequency response of the gain function of the-amplifier to be designed and the shape of the transistor forward gain function, respectively. Synthesis of input/output matching networks (IMN/OMN) of the amplifier requires mathematically generated target gain functions to be tracked in two different nonlinear optimization processes. In this manner, NGF not only facilitates a mathematical base to share the amplifier gain function into such two distinct target gain functions, but also allows their precise computation in terms of T-NGF=T/vertical bar S-21 vertical bar(2) at the very beginning of the design. The particular ainplifier presented as the design example operates over 800-5200 MHz to target GSM, UNITS,. Wi-Fi and WiMAX applications. An SRFT (Simplified Real Frequency Technique) based design example supported by simulations in MWO (Micro Wave Office from AWR Corporation) is given using a 1400 mW pHEMT transistor, TGF2021-01 from TriQuint Semiconductor.

Açıklama

Anahtar Kelimeler

Ultra wideband microwave amplifiers, Simplified Real Frequency Technique (SRFT), Small signal scattering parameters, Matching networks, Chebyshev approximation, Nonlinear optimization, Matlab, Microwave Office (AWR), Real frequency technique

Kaynak

Radioengineering

WoS Q Değeri

Q4

Scopus Q Değeri

Q3

Cilt

22

Sayı

3

Künye

Köprü, R., Kuntman, H. H. & Yarman, B. S. B. (2013). Novel approach to design ultra wideband microwave amplifiers: Normalized gain function method. Radioengineering, 22(3), 672-686.