A compact high directivity coupler with &amp;#x00B1;0.15dB error under VSWR 2.5&amp;#x2236;1 for 3&amp;#x00D7;3mm&lt;sup&gt;2&lt;/sup&gt; UMTS power amplifier modules

Li, Yang; Prikhodko, D.; Zhu, Rick; Abdallah, Hichem; Nabokin, S.; Batrin, Maxim; Tkachenko, Y.A.

doi:10.1109/rws.2010.5434159

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…Although the design of coupler is rather straight forward, it becomes challenging to maintain high directivity when integrated into a compact PAM package with high density routing [5]. Fig.…”

Section: Circuit Design and Implementationmentioning

confidence: 99%

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A 3×3mm<sup>2</sup> LTE/WCDMA dual-mode power amplifier module with integrated high directivity coupler

Hau¹,

Hussain²,

Turpel³

et al. 2011

2011 IEEE Bipolar/BiCMOS Circuits and Technology Meeting

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This paper presents a 1920-1980MHz LTE/WCDMA GaAs HBT/pHEMT-based 3x3mm 2 power amplifier module (PAM) with integrated directional coupler targeted for mobile handset applications. The PA operates in two power modes with a dual-path structure. Each path is optimized individually for each power mode, achieving low DC quiescent current and significant current saving compared to single-mode PAs under power backoff. Bias current and load impedance are specifically optimized for linear operation under high peak-to-average ratio LTE modulation. The PAM achieves a low quiescent current of 8mA. Under LTE modulation, the PAM exhibits 38/24% PAE at 27.5/16dBm Pout at UTRA ACLR1<-39dBc. Under WCDMA modulation, the PAM attains 42/26% PAE at 28.5/17dBm Pout at ACLR1<-40dBc. Further current saving is demonstrated with the use of variable power supply. The integrated 20dB coupler achieves ± ± ± ±0.06dB coupling variation under VSWR 2.5:1 mismatch, corresponding to a directivity of 36dB.

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Section: Circuit Design and Implementationmentioning

confidence: 99%

“…In addition, stringent power control requirement in 3G/4G systems demand highly accurate power detection scheme under load mismatch condition [5]. Directional couplers used for monitoring PA output power are required to maintain better than ±0.25 dB coupling variation under VSWR 2.5:1 for state-of-the-art mobile front-end applications.…”

Section: Introductionmentioning

confidence: 99%

A 3×3mm<sup>2</sup> LTE/WCDMA dual-mode power amplifier module with integrated high directivity coupler

Hau¹,

Hussain²,

Turpel³

et al. 2011

2011 IEEE Bipolar/BiCMOS Circuits and Technology Meeting

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Design and Measurements of Two-Gain-Mode GaAs-BiFET MMIC Power Amplifier Modules with Small Phase Discontinuity for WCDMA Data Communications

Yamamoto

Miyashita

Mukai

et al. 2018

IEICE Trans. Electron.

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A compact high directivity coupler with ±0.15dB error under VSWR 2.5∶1 for 3×3mm<sup>2</sup> UMTS power amplifier modules

Cited by 2 publications

References 4 publications

A 3×3mm<sup>2</sup> LTE/WCDMA dual-mode power amplifier module with integrated high directivity coupler

A 3×3mm<sup>2</sup> LTE/WCDMA dual-mode power amplifier module with integrated high directivity coupler

Design and Measurements of Two-Gain-Mode GaAs-BiFET MMIC Power Amplifier Modules with Small Phase Discontinuity for WCDMA Data Communications

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A compact high directivity coupler with &#x00B1;0.15dB error under VSWR 2.5&#x2236;1 for 3&#x00D7;3mm<sup>2</sup> UMTS power amplifier modules

Cited by 2 publications

References 4 publications

A 3&#x00D7;3mm<sup>2</sup> LTE/WCDMA dual-mode power amplifier module with integrated high directivity coupler

A 3&#x00D7;3mm<sup>2</sup> LTE/WCDMA dual-mode power amplifier module with integrated high directivity coupler

Design and Measurements of Two-Gain-Mode GaAs-BiFET MMIC Power Amplifier Modules with Small Phase Discontinuity for WCDMA Data Communications

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Product

Resources

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A compact high directivity coupler with ±0.15dB error under VSWR 2.5∶1 for 3×3mm<sup>2</sup> UMTS power amplifier modules

A 3×3mm<sup>2</sup> LTE/WCDMA dual-mode power amplifier module with integrated high directivity coupler

A 3×3mm<sup>2</sup> LTE/WCDMA dual-mode power amplifier module with integrated high directivity coupler