US PATENT SUBCLASS 324 / 645
.~.~.~.~ Having standing wave pattern

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


324 /   HD   ELECTRICITY: MEASURING AND TESTING

600  DF  IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS {8}
629  DF  .~ Distributive type parameters {6}
637  DF  .~.~ Using transmitted or reflected microwaves {3}
642  DF  .~.~.~ Where energy is reflected (e.g., reflectometry) {4}
645.~.~.~.~ Having standing wave pattern

DEFINITION

Classification: 324/645

Having standing wave pattern:

(under subclass 642) Subject matter including measurement of the spatial distribution of transmitted or reflected energy on a transmission line formed by two sets of waves traveling in opposite direction and characterized by the presence of a number of points of successive maxima and minima in the distribution curves.

(1) Note. A standing wave is also called a stationary wave and it is a wave disturbance which is not progressive, i.e., one in which any component of the field can be specified as a function of position multiplied by a sinusoidal function of time.

(2) Note. Voltage Standing Wave Ratio (VSWR), is equal to the ratio of the characteristic impedance of the line to the impedance of the load connected to the output end of the line.

(3) Note. Voltage Standing Wave Ratio (VSWR) = (1+p)/(1-p) where p is the reflection coefficient.

SEE OR SEARCH THIS CLASS, SUBCLASS:

608, for signal evaluation or processing techniques which include a ratio function.