&amp;lt;i&amp;gt;A Brief Review&amp;lt;/i&amp;gt;: Stage-Convertible Power Amplifier Using Differential Line Inductor

Park, Jonghoon; Lee, Changhyun; Park, Changkun

doi:10.4236/wet.2012.34027

Cited by 8 publications

(8 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Accordingly, the DAT provides successful solutions for the output matching networks of CMOS power amplifiers. Various studies related to CMOS power amplifiers using a DAT have been reported . Notably, with application of a DAT as the output matching network, the efficiency of the CMOS power amplifier has been dramatically improved.…”

Section: Introductionmentioning

confidence: 99%

Split driver stages for a switching mode power amplifier with multipairs of power stages

Seo

Park

2014

Micro & Optical Tech Letters

Self Cite

View full text Add to dashboard Cite

In this study, we analyze the effects of a power splitter on the output power and the power consumption of a CMOS power amplifier using a distributed active transformer as an output balun. On the basis of the analyzed results, we propose a split driver stage structure to mitigate the undesired effects of the conventional power splitter. In the proposed structure, the power splitter is located between the first and second driver stages to isolate the input node of the power stage from the parasitic components of the power splitter. To verify the feasibility of the proposed structure, we designed conventional and proposed 1.9‐GHz CMOS power amplifiers using 0.11‐µm RF CMOS technology. The measured efficiency and output power of the proposed amplifier are improved compared to those of the conventional amplifier. From the measured results, we successfully verify the feasibility of the proposed split driver stage structure. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2341–2345, 2014

show abstract

Section: Introductionmentioning

confidence: 99%

Split driver stages for a switching mode power amplifier with multipairs of power stages

Seo

Park

2014

Micro & Optical Tech Letters

Self Cite

View full text Add to dashboard Cite

show abstract

“…The Helmholtz's theorem [1] states that any sufficiently smooth, decaying vector field in three dimensions can be decomposed into the sum of a curlfree (CF)/irrotational and a divergence-free (DF)/solenoidal vector components. The Helmholtz decomposition (HD) could capture field features, such as sources, sinks, and vortices [2]. Thus, it is a powerful visual tool in several applications involving aerodynamic design, detection of flow features, computer graphics, and so forth [3].…”

Section: Introductionmentioning

confidence: 99%

A miniaturized 2.4-GHz CMOS low-noise amplifier using a gate-source coupling technique

Kim

Lee

Park

2014

Microw. Opt. Technol. Lett.

Self Cite

View full text Add to dashboard Cite

In this study, we proposed a miniaturization technique for a differential RF CMOS low‐noise amplifier (LNA). The inductors of the input matching network and for the source degeneration are magnetically coupled to minimize the area for the inductors. By adapting this technique in a CMOS LNA, the parasitic resistance induced by both the input and the source degeneration inductors is reduced, improving the noise figure and gain of the amplifier. To verify the feasibility of the proposed technique, we designed the 2.4‐GHz differential LNA using 0.13‐µm RF CMOS technology. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1836–1838, 2014

show abstract

“…Additionally, the power amplifier is regarded as the component which determines the power efficiency of the overall mobile system, as the amplifier consumes most of the power from the battery. Efficiency improvement methods for power amplifiers remain one of the major challenges in today's pursuit of efficient mobile systems [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Supply Voltage of a Switching Mode RF CMOS Power Amplifier to Enhance Its Efficiency

Hwang

Seo

Lee

et al. 2013

Micro & Optical Tech Letters

Self Cite

View full text Add to dashboard Cite

In this work, we analyzed numerically the effects of an interstage capacitor related to the power-added efficiency of a power amplifier. In particular, we calculated the power consumption values induced by the on-resistances and short-circuit current of the class-Dtype driver-stage. After analyzing the results, the interstage capacitor between the driver and the power stages was removed to improve the overall efficiency. By removing the interstage capacitor, the supply voltage for the driver stage can be decreased compared to a normal power amplifier. The power consumption at the on-resistance of the driver stage can be reduced and the power consumption induced by the shortcircuit current can be reduced. Additionally, we measured the power consumption at the driver stages to verify the calculated results. In the experimental results, we noted improved efficiency of the proposed amplifier, while its output power was nearly identical to that of a normal amplifier.In this section, we describe numerically the effects of the supply voltage of the driver stage related to the overall efficiency of

show abstract

<i>A Brief Review</i>: Stage-Convertible Power Amplifier Using Differential Line Inductor

Cited by 8 publications

References 10 publications

Split driver stages for a switching mode power amplifier with multipairs of power stages

Split driver stages for a switching mode power amplifier with multipairs of power stages

A miniaturized 2.4-GHz CMOS low-noise amplifier using a gate-source coupling technique

Numerical Analysis of the Supply Voltage of a Switching Mode RF CMOS Power Amplifier to Enhance Its Efficiency

Contact Info

Product

Resources

About