Common-mode stability in low-power LO drivers

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...

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Bibliographic Details
Main Authors: Gueorguiev, S., Lindfors, S., Larsen, T.
Format: Conference Proceeding
Language:English
Subjects:
Circuit stability
Driver circuits
Electronic circuits
Energy consumption
Impedance
Integrated circuit technology
Laboratories
Radio frequency
Resistors
Semiconductor device modeling
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Description
Summary: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.
ISSN:0271-4302
2158-1525
DOI:10.1109/ISCAS.2005.1465883