 |
quadrature
| English Wikipedia - The Free Encyclopedia | Download this dictionary |
Quadrature
Quadrature may refer to:
In signal processing:
In signal processing:
- Quadrature amplitude modulation (QAM), a modulation method of using both an (in-phase) carrier wave and a 'quadrature' carrier wave that is 90° out of phase with the main, or in-phase, carrier
- Quadrature phase, oscillations that are said to be in quadrature if they are separated in phase by 90° (π/2, or λ/4)
- Quadrature filter, the analytic signal of a real-valued filter
- Quadrature phase-shift keying (QPSK), a phase-shift keying of using four quadrate points on the constellation diagram, equispaced around a circle
| See more at Wikipedia.org... |
© This article uses material from Wikipedia® and is licensed under the GNU Free Documentation License and under the Creative Commons Attribution-ShareAlike License
| WordNet 2.0 | Download this dictionary |
quadrature
Noun
1. the construction of a square having the same area as some other figure
(hypernym) construction
| Babylon French-English | Download this dictionary |
quadrature
nf.
quadrature
| Babylon Italian-English | Download this dictionary |
quadratura
nf.
squaring
| Webster's Revised Unabridged Dictionary (1913) | Download this dictionary |
Quadrature
(a.)
The position of one heavenly body in respect to another when distant from it 90¡, or a quarter of a circle, as the moon when at an equal distance from the points of conjunction and opposition.
The position of one heavenly body in respect to another when distant from it 90¡, or a quarter of a circle, as the moon when at an equal distance from the points of conjunction and opposition.
(a.)
The integral used in obtaining the area bounded by a curve; hence, the definite integral of the product of any function of one variable into the differential of that variable.
The integral used in obtaining the area bounded by a curve; hence, the definite integral of the product of any function of one variable into the differential of that variable.
(a.)
The act of squaring; the finding of a square having the same area as some given curvilinear figure; as, the quadrature of a circle; the operation of finding an expression for the area of a figure bounded wholly or in part by a curved line, as by a curve, two ordinates, and the axis of abscissas.
The act of squaring; the finding of a square having the same area as some given curvilinear figure; as, the quadrature of a circle; the operation of finding an expression for the area of a figure bounded wholly or in part by a curved line, as by a curve, two ordinates, and the axis of abscissas.
(a.)
A quadrate; a square.
A quadrate; a square.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
