Principles of Electricity and Electromagnetism |
From inside the book
Results 1-3 of 21
Page 569
... antenna -Natural frequency loaded antenna . Natural frequency of antenna Natural frequency loaded antenna Loading coil reactance L Inductive Capacitative ( Dashed ' x ' = ' cotwlVLC ' curve ) L = 40 μh / length C ' = 10μf / length X1 ...
... antenna -Natural frequency loaded antenna . Natural frequency of antenna Natural frequency loaded antenna Loading coil reactance L Inductive Capacitative ( Dashed ' x ' = ' cotwlVLC ' curve ) L = 40 μh / length C ' = 10μf / length X1 ...
Page 570
... antenna , an increase in capacity indicates an inductive and a decrease a capacitative reactance . The antenna lead is then discon- nected and a series circuit containing a known resistance and reactance of the proper sign connected ...
... antenna , an increase in capacity indicates an inductive and a decrease a capacitative reactance . The antenna lead is then discon- nected and a series circuit containing a known resistance and reactance of the proper sign connected ...
Page 575
... antenna at the principal maximum obtained from n parallel coplanar half - wave antennas excited in phase is 20 log10 n . If these are each backed by a suitable antenna to suppress the radiation to the rear , the power gain is 20 log 10 ...
... antenna at the principal maximum obtained from n parallel coplanar half - wave antennas excited in phase is 20 log10 n . If these are each backed by a suitable antenna to suppress the radiation to the rear , the power gain is 20 log 10 ...
Other editions - View all
Common terms and phrases
alternating current alternating-current ampere amplifier amplitude angle angular anode antenna applied approximately armature assumed atom axis calculated capacity cathode cell characteristic charge circuit coefficient coil component condenser conducting conductor considered constant curl current flowing curve deflection density determined dielectric dielectric constant direct-current direction dynamic resistance effective electric field electromagnetic electromotive force electrons electrostatic element energy equal equation flux force frequency function galvanometer grad harmonic hence impedance induction integral ions known length linear load magnetic field magnetic moment magnitude maximum measured meter negative obtained ohms oscillations output parallel phase plane plate current positive potential difference potentiometer quantities R₁ radiation radius ratio reactance region represents resistance resonant rotation scalar shown in Fig solution surface temperature terminals theorem torque transconductance triode tube unit vacuum tube vector velocity voltage volts wave wire written zero