quadrature modulation
Also found in: Acronyms.
quadrature modulation
[′kwä·drə·chər ‚mäj·ə′lā·shən] (communications)
Modulation of two carrier components 90° apart in phase by separate modulating functions.
Also found in: Acronyms.
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References in periodicals archive
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Direct quadrature modulation, as shown in Figure 4, is a common form of direct conversion used in the transmit path.
FM signal generation is an all-analog process; wideband FM signals may be produced by quadrature modulation followed by frequency multiplication
Telephone designers chose to remove quadrature modulation and demodulation functions from the baseband ASICs and place them in the analog BF/IF chips to alleviate mixed-signal isolation issues and allow for lower power CMOS designs.
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- Quadrature All-Pass Filter
- quadrature amplifier
- Quadrature amplitude modulation
- Quadrature amplitude modulation
- Quadrature Amplitude Modulation Phase Shift Keying
- Quadrature Amplitude Phase Shift Keying
- Quadrature Amplitude-Shift Keying
- Quadrature Audio Data Modulation
- Quadrature booster
- Quadrature booster
- Quadrature Chaos Shift Keying
- Quadrature Charge-Domain Filter
- Quadrature Code Excited Linear Prediction
- quadrature component
- quadrature current
- Quadrature Differential Phase Shift Keying
- Quadrature Double Sideband
- Quadrature Elevation
- Quadrature Encoder Interface
- Quadrature Error Vector
- Quadrature formula
- Quadrature formulas
- Quadrature Frequency Shift Keying
- Quadrature Frequency/Phase Modulation
- Quadrature Generator
- Quadrature Hybrid Coupler
- Quadrature Intermediate Frequency Mixer
- Quadrature Method of Moments
- Quadrature mirror filter
- Quadrature Mirror Filter Bank
- quadrature modulation
- Quadrature modulator
- Quadrature Motor Encoder
- Quadrature Multipath Monitor
- Quadrature of an orbit
- Quadrature of the circle
- Quadrature of the moon
- Quadrature Offset Raised Cosine
- Quadrature Overlapped Raised Cosine
- Quadrature Partial Response
- quadrature partial-response keying
- Quadrature Partial-Response System
- Quadrature Phase Clock
- Quadrature Phase Shift Keying
- Quadrature phase-shift keying
- Quadrature phase-shift keying
- Quadrature Power Splitter
- Quadrature Product Subcarrier Modulation
- Quadrature Quadrature Phase Shift Keying
- Quadrature Selective Excitation
- Quadrature Sideband Amplitude Modulation
- Quadrature Transmit Filter
- Quadrature Voltage-Controlled Oscillator
- Quadrature-Phase Local Oscillator
- Quadrature-Quadrature Phase Shift Keying
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