O'Reilly logo

Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 390

The “smart rock”: a micropower transponder

Dale Eager

Abstract

The “smart rock” system, a micropower transponder, is described.

Keywords

Smart rock

LTC1440

LTC1480

Introduction

A “smart rock” is a locating device that is buried at a specific site. It is interrogated by a portable source and responds with information about its position, identification number or any data that it has collected since its last interrogation. Ideally, a smart rock, once placed, will wait, listening for its interrogator, for many years, or even for decades. A smart rock buried on a nature trail might send its identification number to a traveler’s handheld transponder, which would decode the identification number and play a message describing ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required