Publication

A low power 2.4 GHz front end with MEMS lattice based channel filtering at RF

Christian Enz
2012
Conference Papers

Abstract

In this work, a sub sampling receiver front end at 2.4 GHz with high Q filtering to perform channel selection at RF is presented. A low power solution for channel selection directly at RF is proposed in this work using pseudo-self-biased inverter amplifier with a BAW resonator lattice as a load to realize high selectivity. This work focusses on the Bluetooth LE standard, however the front-end can be used for any protocol standards for radios working at 2.4 GHz. A low power BAW based digitally controlled oscillator (DCO) is used as a reference to a LC PLL to perform channel selection. An integer divided version of the BAW DCO signal is used as clock for the sub-sampler to down-convert the selected channel from super-high IF to baseband in quadrature. The proposed architecture is designed in 0.18μm CMOS process and validated using ELDO-RF simulations. © 2012 IEEE.

Official source

https://infoscience.epfl.ch/entities/publication/dd6a8c93-a2bf-4365-8015-9e57b347580c

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Christian Enz
2012
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/dd6a8c93-a2bf-4365-8015-9e57b347580c

About this result

Related concepts (32)

Radio

Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 3,000 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves, and received by another antenna connected to a radio receiver. Radio is widely used in modern technology, in radio communication, radar, radio navigation, remote control, remote sensing, and other applications.

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A communication protocol is a system of rules that allows two or more entities of a communications system to transmit information via any variation of a physical quantity. The protocol defines the rules, syntax, semantics, and synchronization of communication and possible error recovery methods. Protocols may be implemented by hardware, software, or a combination of both. Communicating systems use well-defined formats for exchanging various messages.

Protocol stack

The protocol stack or network stack is an implementation of a computer networking protocol suite or protocol family. Some of these terms are used interchangeably but strictly speaking, the suite is the definition of the communication protocols, and the stack is the software implementation of them. Individual protocols within a suite are often designed with a single purpose in mind. This modularization simplifies design and evaluation. Because each protocol module usually communicates with two others, they are commonly imagined as layers in a stack of protocols.

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