A direct conversion WiMAX RF transmitter in 0.18um CMOS technology

Autor:	M. Nourani, M. F. Hanif, S. Askari, K. Desai, B. Banerjee
Rok vydání:	2009
Předmět:	Phase-locked loop Radio transmitter design Frequency divider Engineering Voltage-controlled oscillator CMOS business.industry Amplifier Phase noise Electrical engineering Electronic engineering business Phase frequency detector
Zdroj:	2009 IEEE Dallas Circuits and Systems Workshop (DCAS).
DOI:	10.1109/dcas.2009.5505724
Popis:	This paper describes a direct conversion transmitter for front-end Mobile WiMAX. The transmitter is implemented in 0.18µm CMOS technology and covers the frequency range 2.5–2.7 GHz. The components included in the system are Phase locked loop (PLL), phase frequency detector (PFD), Charge Pump (CP), TSPC based clock divider and Voltage Controlled Oscillator (VCO). On chip CMOS Class-AB Power Amplifier (PA) with adaptive biasing and highly linear active Mixer are also implemented. The transmitter employs fully differential architecture for VCO providing excellent rejection of substrate Noise. The PA has OIP3 in excess of 18 dBm providing EVM < 3% with 16 QAM modulation scheme and an excellent spectral mask adherence.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a66e05331bac4a02ceee70bcb41fa599 https://doi.org/10.1109/dcas.2009.5505724 Zobrazit plný text záznamu