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A 0.7-3GHz envelope ΔΣ modulator using phase modulated carrier clock for multi-mode/band switching amplifiers

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4 Author(s)
Hori, S. ; NEC Corp., Kawasaki, Japan ; Kunihiro, K. ; Takahashi, K. ; Fukaishi, M.

A 1-bit RF modulator using phase-modulated-carrier-clocking envelope ΔΣ modulation for a multi-mode/band transmitter is presented. The prototype IC designed in 90 nm CMOS process covers 2.4 GHz ISM and 3GPP frequency bands up to 3 GHz in conformity with IEEE 802.11g, W-CDMA and LTE in 5MHz-mode. The IC dissipates 8 mW for 1.95 GHz WCDMA and occupies 0.044 mm2.

Published in:

Radio Frequency Integrated Circuits Symposium (RFIC), 2011 IEEE

Date of Conference:

5-7 June 2011

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