filter circuits for impedance matching of wideband transducers ABSTRACT Wide band piezo-composite transducer is a next generation transducer for under water application. The impedance matching on the interface between electro-acoustical transducer and electrical transmitter has been the most important subject to confirm the high transmitting efficiency. Because the impedance of a wide band transducer depends on signal frequency‚ it is difficult to design a matching network between
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Double stub impedance matching Impedance matching can be achieved by inserting two stubs at specified locations along transmission line as shown below There are two design parameters for double stub matching: The length of the first stub line Lstub1 The length of the second stub line Lstub2 In the double stub configuration‚ the stubs are inserted at predetermined locations. In this way‚ if the load impedance is changed‚ one simply has to replace the stubs with another set of different
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only an electrically small antenna can be used in the application. Early in a design cycle it is important to determine if the physical volume specified is‚ in theory‚ large enough electrically to allow the design of any antenna which can meet the impedance bandwidth requirements specified. There is a fundamental theoretical limit to the bandwidth and
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Electronics‚ Madhav Institute of Technology and Science Gwalior‚ (M.P); EMAIL- gouravrajput23@gmail.com Abstract In this present work‚ “Design and analysis of patch antenna using metamaterial (MTM) structure” is proposed for better improvement in the impedance bandwidth and reduction in the return loss at operating frequency 1.89 GHz. The proposed antenna is designed at a height 3.2 mm from the ground plane. This design is operated at 1.89 GHz and 2.553 GHz. At 1.89GHz‚ the bandwidths are increased up
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been reached and the antenna no longer performs satisfactorily. ` An antenna that operates over a wide frequency range and still maintain satisfactory performance must have compensating circuits switched into the system to maintain impedance matching. Fig. 3.6 shows wide bandwidth of 1.8 GHz at 5.2 GHz. Fig. 4.6: Bandwidth of Yagi-Uda antenna (f) Radiation Efficiency Radiation efficiency is the ratio of power radiated by antenna to the total input power supplied
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In this assignment‚ we are required to design an antenna which is capable of transmitting and receiving electromagnetic waves operating at 433MHz. Our aim is to maximize the gain of the antenna and achieve impedance matching between load impedance and transmission line’s impedance. Among a wide range of different antennas‚ our group decide to build up a Yagi Uda antenna to fulfill this assignment for two main reasons. Firstly‚ the gain that Yagi Uda antenna provides is very high. Hence for transmission
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School of Electrical and Electronic Engineering First Year Laboratory Semester 2 Module: Energy Transport and Conversion Code: EEEN10027 Lecturer: Dr Schofield Experiment: 3-Phase power system investigations Aims • • • To introduce 3-phase power systems as a common method to transmit electrical power over long and short distances. To investigate the effects of 3-phase loads on electrical power systems To investigate the differences between DELTA and STAR connections
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2.8 GHz Narrow-Band Colpitts Voltage Controlled Oscillator Design Literature Survey Report Bilkent University Electrical&Electronics Engineering Abstract Oscillators are one of the main building blocks of the electronic devices. They work on the principle of oscillation which is a periodic fluctuation between the maximum and minimum value of the quantity. Oscillators mainly consist of two parts: the active circuit and the resonator. In active circuit there are active circuit elements
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electrical near-field coupling and for magnetic near-field coupling‚ respectively. The relationships among the power-transmission efficiency and the antennas ’ geometries‚ the antennas ’ electrical sizes‚ the impedance matching of the antennas‚ and the ohmic losses in the antennas and the impedance-matching circuits were clarified. This technology has been widely applied‚ from the wireless charging of electronic devices to huge projects‚ such as the solar-power satellite system. The most important challenge
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BSNL TTA Question Paper: Network Filters and Transmission Lines Exam Name: TTA (Telecom Technical Assistant) Specialization: Section C - Network Filters and Transmission Lines Conducted By: BSNL (Bharat Sanchar Nigam Limited) Conducted In: December 2007 Number of Questions: 50 Maximum Marks: 250 Time Allowed: 90 Minutes Negative Marking: Yes Type of Questions: Objective Type (Multiple Choice) Section (Network Filters and Transmission Lines) 1. Pick up wrong statement (a) A group of interconnected
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