19.9. The resonant circuit at an operating frequency can be formed by using a capacitor (Cp) connected parallel with the receiver coil (L2). It acts as an AC voltage source to the rest of the receiver circuit du
For single-frequency operation, it is necessary to design the circuit so that the previous condition is met at only one frequency. Also note that because the impedance of the negative resistance device is affected by its operating mode, oscillation almost invariably undergoes some frequency shift. ...
(a) Schematic illustration of the layer structure and of the circuit used for the measurements. Capacitors containing gate oxide and semi-insulating wurtzite Ga1 À xMnxN film as insulators are biased by a low-frequency a.c. electric field applied between the gate and the back contact. The...
2.1 Estimation of resonance frequency and characteristic impedance Figure 1(a) depicts the PPR structure. Since the PPR exhibits the same electromagnetic characteristics as a resonant LC circuit, the resonant frequency can be calculated by an equivalent circuit model with a set of parameter values as...
the relevant loss is the permanent cessation of circulation to the brain. The consequence of this lack of circulation is that the brain undergoes ischemic infarction, with the inevitable loss of brain function (Fig.2). Thus, restoration of oxygenated blood flow to the thorax and abdomen when us...
[43]. The design is based on obtaining electrical power from a shoe and wirelessly transmitting it to charge a mobile device. Their design was limited to charging from the motion a shoe undergoes. The device can only be used when the user is walking. It does not allow for a scalable ...
Severe mechanical damage can cause cable breakage, short circuit, or ground fault. After the failure of a submarine cable, its detection and repair often cost a lot of time and financial resources, so it is of great importance to study the mechanism of mechanical stress on cable damage. ...
The output signal from the circuit was connected to the second port of the A/D data acquisition device. The signals from both data acquisition units were transferred to the laboratory computer via USB 2.0 connections at a rate of ˜1.6 kHz by the LabVIEW SignalExpress™ software. Data ...
In essence, tunable feed gap is an indispensable part of conventional RF antennas and pro- vides a practical approach for dramatic enhancement of the "electrical length" (i.e., electrical resonance). Using lum- ped electronic circuit elements in the inter-antenna gap, broadband resonant antennas...
Abbreviations AUDIT-C: Alcohol use disorder identification test – consumption questions; BeCOME: Biological classification of mental disorders; DSM: Diagnostic and statistical manual of mental disorders; EMG: Electromyographic; fMRI: Functional magnet resonance imaging; ICD: International classification of ...