A 1-V 600µA CMOS Fractional-N Synthesizer with External Inductor QVCO for Med Radio Receiver
Keywords:
CMOS, fractional-N synthesizer, low-voltage low-power radio.Abstract
An ultra-low-power low voltage fractional-N synthesizer with I, Q output for 401-406 MHz Medical Device Radio communications Service (MedRadio) receiver intended for wireless communication in biomedical sensor applications is implemented using 0.18-µm CMOS technology. The synthesizer consists of QVCO with external inductor,crystal oscillator, phase frequency detector, charge pump, prescaler and 2nd order delta sigma modulator. The fractional-N synthesizer achieves a phase noise of -106 dBc/Hz at 100 kHz offset while consuming less than 0.6 mW from a 1-V supply voltage and occupying 0.5 mm² of die area
Downloads
Downloads
Published
Issue
Section
License
You are free to:
- Share — copy and redistribute the material in any medium or format for any purpose, even commercially.
- Adapt — remix, transform, and build upon the material for any purpose, even commercially.
- The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
- Attribution — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
Notices:
You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation .
No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.
