rf-measurement-impedance measurement

impedance measurement


Input impedance measurement of a dipole antenna mounted on a car tire
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For the design of an antenna that will be directly attached to a car tire, the proximity effects due to the tire have to be considered. Measurements are performed on a dipole antenna that is mounted at the inside of the tire tread to determine the change in input impedance and

Gain and input impedance measurement for UHF transponder antennas
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It was shown by numerous authors that the characterization of RFID (radio-frequency identification) transponder antennas that are favored to be small, have low gain, and show a strongly reactive input impedance, is far from trivial. We propose a method that utilizes a

Bore reconstruction based on input impedance measurement : application to the bassoon crook
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The bore profile of a wind instrument has an important influence on its acoustical characteristics. Specifically, playing frequencies are close to the resonance frequencies of the tube constituted by the bore of an instrument. Several methods were developed to obtain

Measurement of the Input Impedance of an Electrically Long Wire Inside a Resonator
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Both values are summarized and compared in Tab. 1. The electrical length was calculated from the first resonance which was measured using the network analyzer during the input impedance measurement . 2 Page 3. 1 Devices Used for the Measurement

Output impedance measurement in power sources and conditioners
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The internal output impedance ofpower sources and power conditioners has a strong impact on conducted interference in mixed-signal circuits. Also, the transient response ofpower sources and power conditioners in front of sudden load changes must be known to prevent

Electrical impedance measurement using voltage/current pulse excitation
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Abstract− Electrical impedance measurements based on pulse excitation are fast and simple to implement, which makes them attractive for low-power measurement systems such as remote water conductivity monitoring based on twoelectrode cells. Pulse measurements

News in RF impedance measurement
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This paper reviews developments that have taken place in recent years in the field of RF and microwave impedance measurement . The review is based exclusively on developments made at the UKs National Physical Laboratory (NPL) during the past three years. The main

Measurement of UHF RFID tag antenna impedance
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Page 1. Measurement of UHF RFID Tag Antenna Impedance After that, Palmer and Rooyen , in 2006, proposed a method by using coaxial cables to replace the microstrip lines with the standard calibration. This technique allowed broadband impedance measurement

Input impedance measurement of a dipole antenna mounted on a car tire
free download

For the design of an antenna that will be directly attached to a car tire, the proximity effects due to the tire have to be considered. Measurements are performed on a dipole antenna that is mounted at the inside of the tire tread to determine the change in input impedance and



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