Coupling Effects of Dual SiGe Power Amplifiers for 802.11n MIMO Applications

Hua, W.-C.; Lin, Po-Tsung; Lin, Chun-Ping; Lin, Che-Yung; Chang, Herng-Hua; C, Liu; Yang, Tzong–Jer; Ma, Gin-Kou

doi:10.1109/rfic.2006.1651092

Cited by 10 publications

References 6 publications

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Matrix-based orthogonal polynomials for MIMO transmitter linearization

Amiri

Bassam

Helaoui

et al. 2010

2010 15th IEEE International Workshop on Computer Aided Modeling, Analysis and Design of Communication Links and Networks (CAMA

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Orthogonal polynomials have been considered as a powerful tool for power amplifier behavioral modeling and Digital Predistortion (DPD) linearization. The application of orthogonal polynomials was limited to SISO systems. This paper extends the idea to MIMO applications and demonstrates the linearization of 2x2 MIMO transmitters in the presence of RF crosstalk using matrix-based orthogonal polynomial linearization architecture. The performance of the proposed DPD has been evaluated using WCDMA and WiMAX standards. By incorporating the proposed DPD linearization topology, the measured ACPR of the WCDMA signal was improved from -42 dBc to -59 dBc and the measured EVM of WiMAX signal was reduced from -25 dB to -52 dB.

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Matrix-based orthogonal polynomials for MIMO transmitter linearization

Amiri

Bassam

Helaoui

et al. 2010

2010 15th IEEE International Workshop on Computer Aided Modeling, Analysis and Design of Communication Links and Networks (CAMA

View full text Add to dashboard Cite

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Effective Crosstalk Isolation With Post-CMOS Selectively Grown Porous Silicon Technique for Radio Frequency System-on-Chip (SOC) Applications

Liao

Wang

et al. 2008

IEEE Electron Device Lett.

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Reduction of Crosstalk Between Dual Power Amplifiers Using Laser Treatment

Chang

Kuo

Hua

et al. 2008

IEEE Microw. Wireless Compon. Lett.

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A cost-effective isolation technique using laser treatment is proposed to suppress the undesired crosstalk between dual power amplifiers (PAs), which are essential to multiple-input multiple-output communications system. Laser treatment not only reduces the small-signal coupling between dual PAs but also enhances the linearity of the PA under dual-PA operation mode. The figure of merit for the small-signal coupling has an improvement of 4.55 dB at 2.45 GHz, and the output power at 3% ( 30 dB) error vector magnitude (EVM) has a linearity improvement of 6.1 dB under 0-dB interference.Index Terms-Coupling, crosstalk, isolation, laser treatment, multiple input multiple output (MIMO), power amplifiers (PAs).

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Coupling Effects of Dual SiGe Power Amplifiers for 802.11n MIMO Applications

Cited by 10 publications

References 6 publications

Matrix-based orthogonal polynomials for MIMO transmitter linearization

Matrix-based orthogonal polynomials for MIMO transmitter linearization

Effective Crosstalk Isolation With Post-CMOS Selectively Grown Porous Silicon Technique for Radio Frequency System-on-Chip (SOC) Applications

Reduction of Crosstalk Between Dual Power Amplifiers Using Laser Treatment

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