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Open AccessFeature PaperArticle

A Reconfigurable Radio-Frequency Converter IC in 0.18 µm CMOS

Grupo de Diseño Electrónico, Facultad de Ciencias, Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
Author to whom correspondence should be addressed.
Electronics 2019, 8(10), 1146;
Received: 6 September 2019 / Revised: 3 October 2019 / Accepted: 3 October 2019 / Published: 10 October 2019
(This article belongs to the Section Microelectronics and Optoelectronics)
This work presents a reconfigurable RF converter for DVB-T television applications using triple-play over GPON. The system takes the DVB-T input, a wavelength division multiplexing (WDM) signal with spectral inversion in the range from 47 M Hz –1000 M Hz , up-converts its frequency to the band-pass of a highly selective surface-acoustic wave (SAW) filter centered at 1 . 3 G Hz , and then down-converts it so that it is compatible with the antenna input of conventional television sets. The designed RF converter incorporates two pairs of frequency synthesizer and mixer, based, respectively, on an integer-N phase-locked loop (PLL) with two LC-tank VCOs with 128 coarse tuning bands in the range from 1.35 G Hz –2.7 G Hz , and a double-balanced Gilbert cell, modified for better impedance matching and improved linearity. It is fed with regulated supplies compensated in temperature and programmed by an I 2 C interface operating on five 16-bit registers. This work presents the experimental characterization of the whole system plus selected cells for stand-alone testing, which have been fabricated in a 0 . 18 m CMOS process.
Keywords: RF converters; triple-play; TV applications RF converters; triple-play; TV applications
MDPI and ACS Style

Sánchez-Azqueta, C.; Guerrero, E.; Gimeno, C.; Celma, S. A Reconfigurable Radio-Frequency Converter IC in 0.18 µm CMOS. Electronics 2019, 8, 1146.

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