|
|
RF choke a large-valued inductor that ex- hibits a large reactance at the operating fre- RF input power the difference between incident power and reflected power at the RF output power the difference in the power available under perfectly matched RF quadrature part of a radio frequency receiver that contains circuits that can be RF quadrature demodulation radio fre- quency demodulation of a signal that was RF quadrature modulation radio fre- quency modulation of a signal that is pro- RF tuner the part of a radio frequency receiver that contains circuits that can be RFI See RFIC See RGB the most widely used image rep- resentation, where color is represented by ). The RGB space is rep- resented in Cartesian coordinates as a unit (1, 1, 1) represents white. See also rheobase the minimum current necessary to cause nerve excitation — applicable to a rib waveguide a type of dielectric waveg- uide formed by several planar layers of di- Riccati equation a class of equations that arises frequently in statistics and linear sys- P, Q, R are symmetric positive definite; A, B, C are arbitrary. Continuous-time, time-varying Riccati Equation: ˙ P = A(t)P (t) + P (t)A T (t) + B(t)Q(t)B T (t) − P (t)C ( t)R −1 (t)C(t)P (t). Continuous-time algebraic Riccati Equation: 0 = AP + P A T + BQB T − P C T R −1 CP. Discrete-time algebraic Riccati Equation: P = AP A T + BQB T − AP C T CP C T + R −1 CP A T . See also Rice distribution the probability distri- bution of the magnitude of a complex quan- c 2000 by CRC Press LLC |