A MMIC Frequency Doubler Using AlGaN/GaN HEMT Technology

Zomorrodian, Valiallah; York, R.A.

doi:10.1109/csics.2011.6062491

Cited by 4 publications

(2 citation statements)

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“…Another approach to frequency multiplying is the use of an active circuit based on a transistor, most frequently a type of Field Effect Transistor (FET). The examples of single FET-based frequency multipliers optimized for best conversion efficiency and without optimization of output power stability are presented in the papers [ 13 , 14 , 15 , 16 ]. In [ 13 ], there is a single FET multiplier-type mixer for an input frequency of 2 GHz.…”

Section: Introductionmentioning

confidence: 99%

“…Here, the input frequency is about 2 GHz and the output power stability is 5 dB for 15 dB of the input power range. In the paper [ 16 ], there is a single FET doubler for 4–8 GHz input frequency with analysis of optimal gate-source voltage for the maximum output power for variable input power value. Active FET-based multipliers are also used for very high frequencies, as the examples may serve papers [ 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

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Microwave Frequency Doubler with Improved Stabilization of Output Power

Kwiatkowski

Knioła

Szczepaniak

2023

Sensors

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The passive multipliers based on semiconductor diodes, most frequently a Schottky type, should be driven by a certain value of input power, where the conversion losses are optimal. This means that the variation in the input power level causes the change in the output power level. A solution to this issue is the integration of an output power amplifier, which in the state of saturation provides quasi-stabilization of the output power. Practically, this approach gives an unsatisfactory performance: weak stabilization or narrow input power range. This paper comprises a concept of an active frequency multiplier with the use of one FET transistor and a special adaptive bias circuit in order to obtain a very wide input power range when the output power is stable. The principle of the operation, design guidelines, and measurement results have been presented for an example circuit of the frequency doubler. The results show the possibility to obtain up to 10 dB input power range for a 1 dB change in output power level without the use of additional amplifiers.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microwave Frequency Doubler with Improved Stabilization of Output Power

Kwiatkowski

Knioła

Szczepaniak

2023

Sensors

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The study of packaging miniaturization effect on the characteristics of an active planar circuit by using the iterative method

Ziar

Zaabat

Baudrand³

2012

Int J Numerical Modelling

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The aim of this manuscript is to present the application of an iterative method based on the concept of transverse wave to analyze the packaging (passive element and substrate) miniaturization effect on the characteristics of an active planar circuit structure. This approach consists in the substitution of the active element by one auxiliary source, and connection is assumed by microstrip line as passive element deposited on one unique substrate. An implementation of the presented theory is shown by extraction of S-parameters and impedances of the active circuit using MATLAB program codes.

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