Compact MOS-Varactor simulation model for development of CMOS millimeter wave circuits

Dec 18, 2012
Compact MOS-Varactor simulation model for development of CMOS millimeter wave circuits

Toshiba Corporation today announced the development of a compact MOS-Varactor simulation model that delivers high level accuracy from DC to the millimeter wave (60 GHz) region. The new model was developed in cooperation with Professor Nobuyuki Itoh of Okayama Prefectural University.

The new compact MOS-Varactor model introduces an original algorithm to express scaling effects and can capture the impacts of parasitic effects that dominate in the 60 GHz region. Measurement parameters from 1MHz to 60 GHz for samples with different cell sizes were used for modeling. In general, it is difficult to express MOS-Varactor with a single model, but this newly developed model fully succeeds.

The new model's accurate capture of parasitic effects supports realization of low in RF-CMOS products, and Toshiba will use it a basic technology for developing such chips, key devices of the company's Analog and Imaging IC Division. Building on the work done so far, Toshiba expects to secure accurate simulation of CMOS circuits in the future.

The new model has been verified with samples with cell lengths ranging from 0.26 µm to 2.0 µm formed with Toshiba's 65nm RF-CMOS technology. Very good accuracy for all cell sizes was achieved from DC to 67 GHz.

Verification of this model was made on a 60GHz circuit. level dependency on the control voltage of the 60 GHz VCO was measured and compared with a circuit simulation, with this model used in the frequency tuning block. Measurement accuracy was found to be 8 dB better than with the conventional model.

These development results were presented at APMC, the Asia-Pacific Microwave Conference, held in Taiwan from December 4 to 7.

Explore further: Model-based highly efficient and highly reliable development process for digital controlled power supply units

add to favorites email to friend print save as pdf

Related Stories

Recommended for you

Drivebot aims to touch driver bases for safety, savings

3 hours ago

Five Thailand-based engineers have developed a dongle device that serves as a fitness tracker for cars and have turned to Indiegogo to raise funds for bringing it forward. The attraction is that it is a simple ...

HP announces Sprout—a truly innovative workstation

6 hours ago

Hewlett-Packard Co has announced the development of a new kind of computer workstation—one that combines the power of a desktop computer with 3D scanning and projection—and adds a second display surface ...

Q&A: 'Interstellar' filmmaker Nolan on his robots

6 hours ago

In his secrecy-shrouded sci-fi extravaganza "Interstellar," filmmaker Christopher Nolan isn't just taking audiences to outer space. He's also sending a couple of robots along for the ride—and they're just ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.