Design of Practical Broadband Matching Networks With Lumped Elements

Şengül, Metin

doi:10.1109/tcsii.2013.2268425

Cited by 15 publications

(7 citation statements)

References 9 publications

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“…TPG curves obtained here, via SRFT and via the published approach (Şengül, 2013) are given in Figure 9 for comparison purposes, and as in example 1, they can be assumed to be the same. So, all the mentioned approaches have nearly the same performances in this example, too.…”

Section: Examplesmentioning

confidence: 99%

“…This example is also coded via Matlab and the following measurements are taken: after three sequential running, average time is 10.6000 s. It is 11.4861 and 10.6271 s via SRFT and via the published approach (Şengül, 2013), respectively.…”

Section: Examplesmentioning

confidence: 99%

“…Low-pass broadband-matching network; in this work: C 1 = 1.4898, C 2 = 1.7024, L 1 = 0.13223, L 2 = 1.9877, L 3 = 1.8665, n = 1.6982, in Şengül (2013): C 1 = 1.4897, C 2 = 1.6979, L 1 = 0.13233, L 2 = 1.9885, L 3 = 1.9043, n = 1.7135…”

Section: Figurementioning

confidence: 99%

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Quality factor based transducer power gain expression

Şengül

2023

COMPEL

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Purpose In the literature, while designing broadband matching networks, transducer power gain (TPG) is used to measure the transferred power. Generally, in TPG expressions, load and back-end impedances of the matching network are used. This study aims to derive a new quality factor-based TPG expression. Design/methodology/approach In deriving the new expression, narrowband L type-matching network design approach is used and the new expression in terms of back-end quality factor, load quality factor and output port quality factor is obtained. Then, a broadband-matching network design approach using the derived TPG expression is proposed. Findings Two broadband double-matching networks are designed by using the proposed design approach using the derived TPG expression. Performances of the designed-matching networks are compared with the performances of the matching networks designed by means of simplified real frequency technique which is a well-known technique in the literature, and it is shown that they are nearly the same. Originality/value In broadband-matching problems, generally an impedance-based TPG expression is used, and it must be satisfied by the designed broadband-matching networks. But, in the literature, there is no quality factor-based TPG expression that can be used in broadband-matching problems. So, this gap in the literature has been filled by this paper.

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Section: Examplesmentioning

confidence: 99%

Section: Examplesmentioning

confidence: 99%

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Quality factor based transducer power gain expression

Şengül

2023

COMPEL

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“…where (13) and 14where are the elements of the unitnormalized scattering matrix of the equalizer E. and are generator and load reflectances expressed in terms of generator and load impedances and [1,7]. and are input and output reflectance functions, respectively, seen at the related port of the matching network when the other port is terminated with and , respectively [1,21]. A much simpler and handy impedance based gain formulae which are equivalent to the reflectance based gain formulae given in (10) and (11) can also be used to calculate the gain such that [21]…”

Section: ) Optimization Functionmentioning

confidence: 99%

“…and are input and output reflectance functions, respectively, seen at the related port of the matching network when the other port is terminated with and , respectively [1,21]. A much simpler and handy impedance based gain formulae which are equivalent to the reflectance based gain formulae given in (10) and (11) can also be used to calculate the gain such that [21]…”

Section: ) Optimization Functionmentioning

confidence: 99%

FSRFT Based Broadband Double Matching via Passband Extremums Determination

Kopru

2018

Balkan Journal of Electrical and Computer Engineering

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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 that an FSRFT based Matlab code can complete the design of a order lowpass lumped element double matching network to match a given generator and load impedance within an optimization time of only 0.6 seconds, a 47 fold less time than that of the same design done using the classical simplified real frequency technique (SRFT). FSRFT owes this superior speed performance to the fact that it tracks only (system unknowns plus 1) number of passband extremum points selected from among the number of gain data (). This work introduces a simple numerical technique called PED (passband extremums determination technique) to be used in determination of these passband extremum points (PEs). An exemplary order microwave bandpass DM circuit design using FSRFT based Matlab (of Mathworks Inc.) code and the simulation of this design via MWO (of AWR Corp.) has yielded the same circuit performance with an exact agreement. Thus, FSRFT, equipped with the PED, newly proposed hereby, might be used as a powerful solver in designing broadband circuits in many fields such as RF/microwave, radar, and communications.

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Broadband matching via reflection function optimization

Şengül

2016

Circuit Theory & Apps

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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 via the formed input reflection coefficient expression. Two examples are presented to explain the usage of the new approach.

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Design of Practical Broadband Matching Networks With Lumped Elements

Cited by 15 publications

References 9 publications

Quality factor based transducer power gain expression

Quality factor based transducer power gain expression

FSRFT Based Broadband Double Matching via Passband Extremums Determination

Broadband matching via reflection function optimization

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