5 GHz-band CMOS direct digital RF modulator using current-mode DAC

Osamu Wada, Tuan Thanh Ta, Shoichi Tanifuji, Suguru Kameda, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

A 5 GHz-band direct digital radio frequency (RF) modulator is proposed and fabricated in 90-nm complementary metal oxide semiconductor (CMOS) process. Since this modulator directly converts digital base-band (BB) parallel input signal into RF signal, small die size and low d.c. operation are achieved. It consists of an inverter section to obtain digital differential BB signal, a differential current-mode digital-to-analog converter (DAC) section and a local oscillator (LO) switch section. The differential DAC configuration enables low glitch performance at the BB current output and low spurious emission at the RF output. The fabricated direct digital RF modulator performs RF output power of -38.6 dBm with LO leakage of -88.1 dBm at 5GHz LO and 1-MHz BB signals. The core size of fabricated integrated circuit (IC) is 200μm × 170μm and d.c. power consumption is 2.5 mW (2.1 mA / 1.2 V).

本文言語English
ホスト出版物のタイトル2012 Asia-Pacific Microwave Conference, APMC 2012 - Proceedings
ページ1118-1120
ページ数3
DOI
出版ステータスPublished - 2012 12 1
イベント2012 Asia-Pacific Microwave Conference, APMC 2012 - Kaohsiung, Taiwan, Province of China
継続期間: 2012 12 42012 12 7

出版物シリーズ

名前Asia-Pacific Microwave Conference Proceedings, APMC

Other

Other2012 Asia-Pacific Microwave Conference, APMC 2012
CountryTaiwan, Province of China
CityKaohsiung
Period12/12/412/12/7

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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