By A.G.Akimov, M.Yu.Barabanenkov, M.L.Baranochnikov, A.V.Leonov, A.D.Mokrushin, and N.M.Omel'yanovskaya
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Additional resources for A Controllable Resistor with Features of a Field-Effect Transistor and Field Hall-Effect Sensor.
3–21. 8. , Ground-based Mobile Complexes of Radio Monitoring and Direction Finding (in Russian). Special technologies. 2003. Special Edition, pp. 30–41. 9. , Problems and Facility Structure of Automated Radio Monitoring Facilities (in Russian). Special technologies. 2003. Special Edition, pp. 2–7. 10. , Carried Direction-Finders for Emission Sources (in Russian). Special technologies. 2003. Special Edition, pp. 34–40. Chapter 3 Radio Receiver Applications for Radio Monitoring System Introduction Radio receivers are a system of interconnected units used for the extraction of energy from electromagnetic fields, as well as for the selection, amplification and conversion necessary to recover information from radio signals.
On the basis of data obtained, one can plot the selectivity curve (Fig. 13). This curve is used for the determination of the bandwidth, the selectivity curve squareness coefficient, and the attenuation in the adjacent channel. The selectivity for the image channel as well as for the direct leakage and the combination channels are determined for the large detuning. The signal attenuation in the spurious channel is the ratio of the input radio signal level, required for the given output signal level, to the useful radio signal level, necessary to obtain the same output signal.
The power ratio of the reflected and incident waves. If a receiver’s input resistance is purely active and equal to the wave impedance of the input cable, S = 1 and reflected power is absent. If the input impedance is not equal to the input cable wave impedance, VSWR is more than 1. If the reflected power is equal to 10% of the incident power, S ≈ 2; if the reflected power is equal to 25% of the incident power, S = 3. In practice, the value S < 3 is usually considered as acceptable for RR input cascades.
A Controllable Resistor with Features of a Field-Effect Transistor and Field Hall-Effect Sensor. by A.G.Akimov, M.Yu.Barabanenkov, M.L.Baranochnikov, A.V.Leonov, A.D.Mokrushin, and N.M.Omel'yanovskaya