Influence of power supply bypass networks on transimpedance amplifier stability

Ramakrishnan, V.; Albers, J.N.; Nottenburg, R.N.

doi:10.1109/mwscas.1997.666071

Cited by 1 publication

(4 citation statements)

References 10 publications

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“…Therefore, it is essential to design a suitable stability network and conduct advanced analysis to ensure that both power amplifiers operate effectively and prevent unnecessary losses. 7 The research on the existing DPA mainly focuses on its back-off performance, linearity, and other indicators, while the research on the stability network is less. [8][9][10][11][12][13][14][15] In our previous work, the main research has also focused on improving the efficiency, enhancing and optimizing load modulation methods, and simplifying simulation design.…”

Section: Introductionmentioning

confidence: 99%

“…26,27 Some articles have delved into studying the stability network of feedback amplifier circuits, analyzing resistance and capacitance components in detail. 7,29 Additionally, research focuses on developing new stability networks and technologies to enhance stability. 28,30,31 However, the most fundamental capacitor-resistor series network, which is widely used in current RF power amplifiers, has not been thoroughly explored in existing research.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, mismatches between the signal source impedance or load impedance and the amplifier network can occur during signal transmission, potentially leading to positive feedback, self‐oscillation, and equipment damage. Therefore, it is essential to design a suitable stability network and conduct advanced analysis to ensure that both power amplifiers operate effectively and prevent unnecessary losses 7 …”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, there is extensive research analyzing stability in different types of power amplifiers under various conditions and application scenarios 26,27 . Some articles have delved into studying the stability network of feedback amplifier circuits, analyzing resistance and capacitance components in detail 7,29 . Additionally, research focuses on developing new stability networks and technologies to enhance stability 28,30,31 .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Gallium Nitride (GaN) Doherty power amplifier chip design based on series RC stability network

Li,

Zhu,

Liu

et al. 2023

Circuit Theory & Apps

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SummaryThis paper presents Doherty power amplifier (DPA) based on gallium nitride (GaN) technology, incorporating a parallel grounded network with series RC elements in front of the carrier and peaking amplifiers to enhance circuit stability. In comparison to the traditional series network with parallel RC structure, this configuration effectively reduces the sensitivity of the stability factor K to the capacitance value within the stability network. Consequently, it mitigates the impact on various performance indicators such as gain and drain efficiency, addressing the issue of measurement performance deviation caused by inaccurate capacitance models in the simulation files, which is particularly crucial for DPA. As a result, the circuit exhibits improved consistency in design and processing. With full band stability, the DPA achieves a saturation output power of approximately 29.8 dBm at 28 GHz, a saturation efficiency of 38.2%, and a 6‐dB back‐off efficiency of 29.6%.

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