Title :
A 0.7-3GHz envelope ΔΣ modulator using phase modulated carrier clock for multi-mode/band switching amplifiers
Author :
Hori, Shinichi ; Kunihiro, Kazuaki ; Takahashi, Kiyohiko ; Fukaishi, Muneo
Author_Institution :
NEC Corp., Kawasaki, Japan
Abstract :
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.
Keywords :
CMOS integrated circuits; Long Term Evolution; UHF amplifiers; UHF integrated circuits; code division multiple access; delta-sigma modulation; radio transmitters; wireless LAN; CMOS process; IEEE 802.11; LTE; RF modulator; W-CDMA; delta-sigma modulation; frequency 0.7 GHz to 3 GHz; frequency 5 MHz; multimode-band switching amplifiers; multimode-band transmitter; phase-modulated-carrier-clocking envelope ΔΣ modulation; power 8 mW; size 90 nm; word length 1 bit; Clocks; Integrated circuits; Modulation; Multiaccess communication; Prototypes; Spread spectrum communication; Switches; CMOS; Delta-sigma modulation; land mobile radio equipment; radio transmitters; switching amplifier; wireless LAN;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium (RFIC), 2011 IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-8293-1
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2011.5940596
