SUBCOURSE EDITION SS0130 B US ARMY SIGNAL CENTER AND FORT GORDON PRINCIPLES OF RADIO WAVE PROPAGATION (SC:25C) EDITION DATE: FEBRUARY 2005 PRINCIPLES OF RADIO WAVE PROPAGATION Subcourse Number SS0130 EDITION B United States Army Signal Center and Fort Gordon Fort Gordon‚ Georgia 30905-5000 10 Credit Hours Edition Date: February 2005 SUBCOURSE OVERVIEW This subcourse is designed
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fingerprint sensor is conveniently placed for user access. A built-in battery and high gain antenna make the 94POS ideal for outdoor field use. ARM9 32 bit Processor Finger Print Scanner Speaker Micro SD Card Application Areas n Financial n Micro Inclusion Finance n egovernance-pension payments‚ MNREGA‚ PDS n Medical & Health Care Finger Print Scanner Contactless Reader Speaker GSM Antenna Visit : www.visiontek.co.in for other products 94 POS Terminal LINUX Operating
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Abstract: In this paper‚ we present the concept of transmitting power without using wires i.e.‚ transmitting power as microwaves from one place to another is in order to reduce the transmission and distribution losses. This concept is known as Microwave Power transmission (MPT). This paper is mainly concentrated on : i) The most popular concept known as Tesla Theory‚ ii) The microwave power transmission(MPT) called Solar power satellite‚ and iii) The highly efficient fiber lasers for wireless power
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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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Real world Applications of Electronics This chapter introduces some of the real world applications of Electronics; 1. Audio Systems 2. Radio Transmission & Reception 3. Control Systems 1. AUDIO SYSTEMS: Any system operating at audio frequencies (20 to 20‚000 Hz) is called an Audio System‚ e.g. an intercom‚ music systems etc. Following diagram (fig.1.1) shows the main features of such an audio system; FIGURE 1.1: Main blocks of an audio system 1.1 Radio tuner: It receives radio signals and converts
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