Open AccessCMOS polar transmitter with wide power control range
Author(s) -
Lin H.C.,
Chen J.H.
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.3752
Subject(s) - cmos , transmitter , power (physics) , electrical engineering , range (aeronautics) , electronic engineering , polar , computer science , engineering , physics , channel (broadcasting) , quantum mechanics , astronomy , aerospace engineering
A dual‐phase pulse‐modulated polar transmitter (PMPT) for wide power control range (PCR) applications is presented. For the validation of the proposed architecture, a radio‐frequency (RF) PMPT chip is implemented with a standard 0.18 μm 1P6M mixed‐signal CMOS process. The measurement results show that by using the proposed technique, wide PCR transmitters can be implemented accurately with low hardware requirements. An RF variable‐gain amplifier with just 21 dB of dynamic range is sufficient to pass the 80 dB PCR of the CDMA2000 standard. Compared with a conventional transmitter utilising linear power amplifiers, the proposed architecture has the potential of achieving much higher efficiency while being able to achieve chip‐level integration with eased circuit design specification.