A Single-Chip RF Tuner/OFDM Demodulator for Mobile Digital TV Application

Yoshimitsu TAKAMATSU; Ryuichi FUJIMOTO; Tsuyoshi SEKINE; Takaya YASUDA; Mitsumasa NAKAMURA; Takuya HIRAKAWA; Masato ISHII; Motohiko HAYASHI; Hiroya ITO; Yoko WADA; Teruo IMAYAMA; Tatsuro OOMOTO; Yosuke OGASAWARA; Masaki NISHIKAWA; Yoshihiro YOSHIDA; Kenji YOSHIOKA; Shigehito SAIGUSA; Hiroshi YOSHIDA; Nobuyuki ITOH

doi:10.1587/transele.E94.C.557

Special Section on Circuits and Design Techniques for Advanced Large Scale Integration

A Single-Chip RF Tuner/OFDM Demodulator for Mobile Digital TV Application

Yoshimitsu TAKAMATSU, Ryuichi FUJIMOTO, Tsuyoshi SEKINE, Takaya YASUDA, Mitsumasa NAKAMURA, Takuya HIRAKAWA, Masato ISHII, Motohiko HAYASHI, Hiroya ITO, Yoko WADA, Teruo IMAYAMA, Tatsuro OOMOTO, Yosuke OGASAWARA, Masaki NISHIKAWA, Yoshihiro YOSHIDA, Kenji YOSHIOKA, Shigehito SAIGUSA, Hiroshi YOSHIDA, Nobuyuki ITOH

Author information

Yoshimitsu TAKAMATSU
Semiconductor Company, Toshiba Corp.
Ryuichi FUJIMOTO
Semiconductor Company, Toshiba Corp.
Tsuyoshi SEKINE
Semiconductor Company, Toshiba Corp.
Takaya YASUDA
Semiconductor Company, Toshiba Corp.
Mitsumasa NAKAMURA
Semiconductor Company, Toshiba Corp.
Takuya HIRAKAWA
Semiconductor Company, Toshiba Corp.
Masato ISHII
Semiconductor Company, Toshiba Corp.
Motohiko HAYASHI
Semiconductor Company, Toshiba Corp.
Hiroya ITO
Semiconductor Company, Toshiba Corp.
Yoko WADA
Semiconductor Company, Toshiba Corp.
Teruo IMAYAMA
Semiconductor Company, Toshiba Corp.
Tatsuro OOMOTO
Semiconductor Company, Toshiba Corp.
Yosuke OGASAWARA
Semiconductor Company, Toshiba Corp.
Masaki NISHIKAWA
Semiconductor Company, Toshiba Corp.
Yoshihiro YOSHIDA
Semiconductor Company, Toshiba Corp.
Kenji YOSHIOKA
Semiconductor Company, Toshiba Corp.
Shigehito SAIGUSA
Corporate Research & Development Center, Toshiba Corp.
Hiroshi YOSHIDA
Semiconductor Company, Toshiba Corp.
Nobuyuki ITOH
Okayama Prefectural University

Keywords: digital TV, 1-segment broadcasting, ISDB-T, tunable, low-noise amplifier, spurious signal, prescaler, PLL

JOURNAL RESTRICTED ACCESS

2011 Volume E94.C Issue 4 Pages 557-566

DOI https://doi.org/10.1587/transele.E94.C.557

Details

Abstract

This paper presents a single-chip RF tuner/OFDM demodulator for a mobile digital TV application called “1-segment broadcasting.” To achieve required performances for the single-chip receiver, a tunable technique for a low-noise amplifier (LNA) and spurious suppression techniques are proposed in this paper. Firstly, to receive all channels from 470MHz to 770MHz and to relax distortion characteristics of following circuit blocks such as an RF variable-gain amplifier and a mixer, a tunable technique for the LNA is proposed. Then, to improve the sensitivity, spurious signal suppression techniques are also proposed. The single-chip receiver using the proposed techniques is fabricated in 90nm CMOS technology and total die size is 3.26mm × 3.26mm. Using the tunable LNA and suppressing undesired spurious signals, the sensitivities of less than -98.6dBm are achieved for all the channels.

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