A Novel Design of a Microstrip Microwave Power Amplifier for DCS Application using Collector-Feedback Bias

Rachakh, Amine; Abdellaoui, Larbi El; Zbitou, Jamal; Errkik, Ahmed; Tajmouati, Abdelali; Latrach, Mohamed

doi:10.11591/ijece.v8i3.pp1647-1653

Cited by 2 publications

(2 citation statements)

References 6 publications

(6 reference statements)

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“…Therefore, we would need to choose a transistor that can be implemented over a wide range of frequencies where it is unconditionally stable. This is usually tested by employing the Rollet's condition as shown in ( 1) and (2) [3, [24][25][26][27].…”

Section: Research Methods 21 Stability Of Transistormentioning

confidence: 99%

Comparative Analysis of Sokal’s Equations versus Load-Pull Implementation of Class E Low-Pass Network

Kirish

Zubir

Rahim

et al. 2020

IJEECS

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In this paper, Class E power amplifiers (PA) aimed at frequency bandwidth of 3.4 GHz to 3.6 GHz (LTE 42) and 3.6 GHz to 3.8 GHz (LTE 43) respectively are designed with objective of attaining high efficiency. The viability of Sokal’s equations for present communication systems aimed at GHz are analyzed for high efficiency using HEMT (High-electron-mobility transistor) on Nitronex NPTB00004 as opposed to the Bipolar Junction Transistor used by Sokal in 1975. Load-pull configuration techniques aimed at the drain is implemented at the output matching network (OMN) and benchmarked against Sokal’s equation. At the OMN, to suppress harmonics, band-pass filters are employed for the LTE 42 and 43 respectively. Sokal’s equation shows that the drain must be conjugately matched before his equations are applied at the OMN. The efficiency at 3.4 GHz obtained for Sokal’s circuit is at 67 % and gain of 9.3 dB. More than 65% efficiency is obtained from load-pull network at 3.4 GHz to 3.76 GHz before filter implementation while showing gain above 7.8 dB. After filter addition at OMN, the efficiency is above 65% and gain above 8 dB for dual - band having bandwidth of 3.4389 GHz - 3.542GHz and 3.6569GHz - 3.8GHz.

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Section: Research Methods 21 Stability Of Transistormentioning

confidence: 99%

Comparative Analysis of Sokal’s Equations versus Load-Pull Implementation of Class E Low-Pass Network

Kirish

Zubir

Rahim

et al. 2020

IJEECS

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show abstract

“…Low complexity is required. One commonly and probably used method is to utilize a radial stub immediately after λ/4 high impedance bias line that will facilitate to realize proper isolation at desired RF/microwave frequency, whatever the component to use after λ/4 long bias line [13].…”

Section: Design Of the Single-stage Power Amplifiermentioning

confidence: 99%

Design of a Microstrip Balanced Amplifier Using the Wilkinson Power Divider

Rachakh¹,

Abdellaoui

Errkik

et al. 2019

Proceedings of the Third International Conference on Computing and Wireless Communication Systems, ICCWCS 2019, April 24-25, 20

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The broadband bandwidth of power amplifiers is one of the most important features that restrict its wide usage. This work presents a new structure of a broadband power amplifier suitable for ISM band. The proposed amplifier, which is realized with two identical single-stage amplifiers and two power dividers on low loss Epoxy (FR4) substrate with a substrate thickness of 1.6mm and a relative permittivity equal to 4.4. The proposed PA demonstrates a power gain of 16 dB at 2.45GHz. The input and output matching impedances are better than -15dB throughout the band. the power amplifier delivers a maximum output power equal to 16dBm with a flat gain varied between 15-16dB.

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A Novel Design of a Microstrip Microwave Power Amplifier for DCS Application using Collector-Feedback Bias

Cited by 2 publications

References 6 publications

Comparative Analysis of Sokal’s Equations versus Load-Pull Implementation of Class E Low-Pass Network

Comparative Analysis of Sokal’s Equations versus Load-Pull Implementation of Class E Low-Pass Network

Design of a Microstrip Balanced Amplifier Using the Wilkinson Power Divider

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