A Low-Noise and Highly-Linear Transmitter with Envelope Injection Pre-Power Amplifier for Multi-Mode Radio

• KOUSAI Shouhei

  Toshiba

• MIYASHITA Daisuke

  Toshiba

• WADATSUMI Junji

  Toshiba

• ITO Rui

  Toshiba

• SEKIGUCHI Takahiro

  Toshiba

• HAMADA Mototsugu

  Toshiba

• OKADA Kenichi

  Tokyo Institute of Technology

抄録

A wideband, low noise, and highly linear transmitter for multi-mode radio is presented. Envelope injection scheme with a CMOS amplifier is developed to obtain sufficient linearity for complex modulation schemes such as OFDM, and to achieve low noise for concurrent operation of more than one standard. Active matching technique with doubly terminated LPF topology is also presented to realize wide bandwidth, low power consumption, and to eliminate off-chip components without increasing die area. A multi-mode transmitter is implemented in a 0.13µm CMOS technology with an active area of 1.13mm². Third-order intermodulation product is improved by 17dB at -3dBm output by the envelope injection scheme. The transmitter achieves EVM of less than -29.5dB at -3dBm output from 0.2 to 7.2GHz while consuming only 69mW. The transmitter is also tested with multiple standards of UMTS, 802.11b, WiMax, 802.11a, and 802.11n, and satisfies EVM, ACLR, and spectrum specifications.

収録刊行物

• IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

  IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E94-A (2), 592-602, 2011

  一般社団法人 電子情報通信学会

キーワード

• multi-mode radio
• wideband transmitter
• active matching
• envelope injection

詳細情報

• CRID: 1390282681287882496
• NII論文ID: 10028229182
• NII書誌ID: AA10826239
• DOI: 10.1587/transfun.e94.a.592
• ISSN: 17451337
• ISSN: 09168508
• Web Site: http://www.jstage.jst.go.jp/article/transfun/E94.A/2/E94.A_2_592/_pdf
• 本文言語コード: en
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