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Microfluidic Mixers for Studying Protein Folding

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Published on: April 10, 2012

Ultra-low-voltage CMOS-based current bleeding mixer with high LO-RF isolation.

Gim Heng Tan¹, Roslina Mohd Sidek², Harikrishnan Ramiah³

¹Department of Electrical and Electronic Engineering, Universiti Putra Malaysia, 43400 Serdang, Malaysia ; Department of Electrical and Electronic Engineering, Segi University, 47810 Petaling Jaya, Selangor, Malaysia.

Thescientificworldjournal

|September 9, 2014

Summary

This summary is machine-generated.

This study introduces an ultra-low-voltage mixer for ZigBee applications, achieving high isolation and low power consumption. The design utilizes a modified current bleeding topology for efficient performance on standard CMOS technology.

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Area of Science:

Integrated Circuits
Wireless Communication

Background:

Current bleeding mixers are essential for low-voltage applications.
Achieving high LO-RF isolation is critical for receiver performance.

Purpose of the Study:

To present an ultra-low-voltage current bleeding mixer with high LO-RF isolation.
To optimize mixer performance for ZigBee applications using standard CMOS technology.

Main Methods:

Implemented a modified current bleeding topology using NMOS and PMOS transistors.
Integrated inductors to facilitate low-voltage operation and high isolation.
Fabricated the mixer on a 0.13 μm standard CMOS process.

Main Results:

Achieved a conversion gain of 7.5 dB at 2.4 GHz.
Measured a high LO-RF isolation of 60 dB.
Demonstrated ultra-low power consumption (572 μW) at 0.45 V supply voltage.

Conclusions:

The proposed mixer effectively achieves ultra-low voltage operation and high LO-RF isolation.
The design is suitable for power-constrained ZigBee applications.
The modified current bleeding topology offers a viable solution for high-performance mixers.