Efficiency enhancement by reconfigurable matching networks in LINC transmitters

Mateo, C. ; Carro, P.L. (Universidad de Zaragoza) ; Garcia-Ducar, P. (Universidad de Zaragoza) ; de Mingo, J. (Universidad de Zaragoza) ; Perez-Cisneros, J.R. (Universidad de Zaragoza) ; Sanchez-Perez, C.

Resumen: This paper proposes the use of a transmitter based on a linear amplification with nonlinear components (LINC) architecture, in which the reconfigurable matching networks (RMNs) are included. By varying the RMN active cell number, it is possible to change the load impedance at the power amplifier (PA) output, improving the amplifier drain efficiency and therefore the efficiency of the whole system. A long-term evolution (LTE) downlink signal with a bandwidth of 1.4 MHz and a peak-to-average power ratio (PAPR) of 11.48 dB is applied in order to carry out the experiments. Results show that the use of the RMNs in a LINC architecture improves the efficiency at all tested frequencies, especially at 927 MHz reaching an enhancement of 36.50%. Regarding the distortion, the adjacent channel leakage ratio (ACLR) values increase in all cases, with an improvement of 3.5 dB at 958 MHz. Finally, in terms of error vector magnitude (EVM), the proposed architecture offers a value of 1.96% at 927 MHz.

Idioma: Inglés

DOI: 10.1186/s13638-017-0873-8

Año: 2017

Publicado en: EURASIP Journal on Wireless Communications and Networking 2017, 1 (2017), 90 [7 pp]
ISSN: 1687-1472

Factor impacto JCR: 2.407 (2017)

Categ. JCR: TELECOMMUNICATIONS rank: 35 / 87 = 0.402 (2017) - Q2 - T2
Categ. JCR: ENGINEERING, ELECTRICAL & ELECTRONIC rank: 98 / 260 = 0.377 (2017) - Q2 - T2

Factor impacto SCIMAGO: 0.301 - Computer Networks and Communications (Q2) - Signal Processing (Q3) - Computer Science Applications (Q3)

Financiación: info:eu-repo/grantAgreement/ES/DGA/GCM-T97
Financiación: info:eu-repo/grantAgreement/ES/MINECO/TEC2014-58341-C4-2-R

Tipo y forma: Article (Published version)

Área (Departamento): Área Teoría Señal y Comunicac. (Dpto. Ingeniería Electrón.Com.)