requirements of such an application and how RFID systems should be customized to meet these needs. It describes a circuit for the transceiver at frequency 2.45 GHz and its interfacing with a computer. A brief note about the specifications of the antenna used and an introduction to the transponder design are made. 2 RFID in ETC RFID – a review The basic working of an RFID is well described in Fig. 1 below. Fig. 1: Schematic of
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RFID BASED ATTENDANCE CUM SECURITY SYSTEM [pic] Submitted By: INTRODUCTION Our final year project is RFID based Attendance cum Security System. This idea came to my mind when I saw our lecturers taking the attendance of 100s of students very hardly. We thought we can integrate the RFID based Security System with attendance system as well. That what our final year project is doing. BLOCK DIAGRAM OF THE PROJECT: [pic] History of RFID: In a very interesting article
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detection (MCMUD). The ‘multichannel’ term indicates that the receiver incorporates multiple antennas by using space-time-frequency adaptive processing. The article reports the experimental performance of these codes and receivers. M - multiple-output (MIMO) systems are a natural extension of developments in antenna array communication. While the advantages of multiple receive antennas‚ such as gain and spatial diversity‚ have been known and exploited for some time [1‚ 2‚ 3]‚ the
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false results. Anechoic chambers were originally used in the context of acoustics (sound waves) to minimize the reflections of a room. More recently‚ rooms designed to reduce reflection and external noise in radio frequencies have been used to test antennas‚ radars‚ or electromagnetic interference. Anechoic chambers range from small compartments the size of household microwave ovens to ones as large as aircraft hangars. The size of the chamber depends on the size of the objects to be tested and the
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Chapter 1 1.What is the range of transmission for a WPAN? 10 feet 2.At what rate is the number of wireless hostpots increasing each year? 350% 3.Which of the following technologies came first chronologically? leased transmission lines 4.A Bluetooth network that contains one master and at least one slave device forms a ____. piconet 5.If an organization s data processing center becomes inoperable‚ it can move all data processing operations to a ____‚ often within an hour. Hot site 6____ give team-based
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Resistors‚ Capacitors‚ Diodes‚ Transistors and LEDs Use of Multimeter - Measuring resistance‚ capacitance‚ voltage‚ batteries 2. Mobile Phone Components Mobile Components - Speaker‚ Mic‚ Ringer‚ Vibrator‚ Charging Connector‚ Memory‚ Antenna Batteries - Types of batteries‚ Standby time‚ Talk time. Chargers. 3. Mobile Basic Introduction GSM / CDMA Technology Basic Working Different terms used in mobile phones – Bluetooth‚ SMS‚ Memory Cards Different services
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case of RFID for business‚ the receiver is a reader/antenna and the transmitter is a tag. The tag is encoded with a unique identification number. This number is transmitted to the reader anytime the tag is queried. The unique ID number can then be referenced in a database for additional information regarding the tagged item. Any RFID system is made of two main components: hardware‚ software/database. The hardware consists of tags‚ reader and antennas. The software consists of middleware and a database
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POWER LINE COMMUNICATION “Power line communications (PLC) is a global technology with worldwide interest in its development. In its simplest terms‚ PLC modulates communication signals over existing power lines. This enables devices to be networked without introducing any new wires or cables. This capability is extremely attractive across a diverse range of applications that can leverage greater intelligence and efficiency through networking.” - Texas Instruments. Introduction: Let me start
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ROCKBLOCK MK2: Communication beyond limits In this 21 century communication is our basic requirement. Some time we are in an area where Wi-fi‚ GSM and other terrestrial communication are not available so we are no able to communicate or send messages to others. Without any terrestrial connectivity we are not able to install any project that is required one way or two way connectivity. In this situation satellite communication device comes to help us. So we can us to send or receive data using satellites
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antennae and brown eyes is mated with a male that is homozygous recessive for all traits (green shell: b‚ short antenna: a‚ black eyes: e). The following progeny (1000 total) were observed. PHENOTYPES NUMBER OBSERVED wild 321 green shell 38 black eyes 130 short antenna 18 green shell‚ short antenna‚ black eyes 309 short antenna‚ black eyes 32 green shell‚ short antenna 140 green shell‚ black eyes 12 What is the correct gene map for these genes? a. b---10mu---a-------30mu-------e
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