Common-mode stability in low-power LO drivers

Author

Gueorguiev, Svetoslav ; Lindfors, Saska ; Larsen, Torben

Author_Institution

Radio Frequency Integrated Syst., Aalborg Univ., Denmark

fYear

2005

fDate

23-26 May 2005

Firstpage

5505

Abstract

A resonator loaded LO buffer is shown to be potentially common mode unstable, when it is connected to drive a double balanced current steering mixer. The stability margin is found to be inversely proportional to the quality factor of the resonator load and, therefore, to the power consumed by the LO buffer. A known solution to the problem is compared with two proposed ones. The approaches differ in terms of current consumption, occupied voltage headroom and area.

Keywords

CMOS analogue integrated circuits; Q-factor; buffer circuits; circuit stability; driver circuits; electric current; electric potential; mixers (circuits); network analysis; power consumption; resonators; CMOS up-conversion mixer; common mode unstable; common-mode stability; current consumption; double balanced current steering mixer; low-power LO drivers; low-power local oscillator drivers; occupied voltage headroom; power consumption; quality factor; resonator loaded LO buffer; stability margin; Circuit stability; Driver circuits; Electronic circuits; Energy consumption; Impedance; Integrated circuit technology; Laboratories; Radio frequency; Resistors; Semiconductor device modeling;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on

Print_ISBN

0-7803-8834-8

Type

conf

DOI

10.1109/ISCAS.2005.1465883

Filename

1465883