Structured Manufacturing Data (2026)

Modulator/Demodulator

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Modulator/Demodulator used in the Computer, Electronic and Optical Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Modulator/Demodulator is characterized by the integration of Oscillator and Mixer. In industrial production environments, manufacturers listed on CNFX commonly emphasize Semiconductor materials (silicon, gallium arsenide) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Electronic circuit that modulates and demodulates signals for transmission and reception

Product Specifications

Technical details and manufacturing context for Modulator/Demodulator

Definition
A critical component within a transceiver circuit that performs two complementary functions: modulation (encoding information onto a carrier wave for transmission) and demodulation (extracting the original information from the received modulated signal).
Working Principle
Converts digital data to analog signals for transmission (modulation) and converts received analog signals back to digital data (demodulation) using techniques like amplitude modulation (AM), frequency modulation (FM), or phase modulation (PM).
Common Materials
Semiconductor materials (silicon, gallium arsenide), Copper, Ceramic substrates
Technical Parameters
  • Operating frequency range (MHz) Customizable
Components / BOM
  • Oscillator
    Generates the carrier wave frequency
    Material: Semiconductor crystal
  • Mixer
    Combines input signal with carrier wave for modulation
    Material: Semiconductor
  • Filter
    Removes unwanted frequencies from the signal
    Material: Ceramic or SAW material
  • Amplifier
    Boosts signal strength for transmission or reception
    Material: Semiconductor

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Modulator/Demodulator.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Not applicable (electronic component)
other spec: Frequency range: 1 MHz to 2.4 GHz, Power supply: 3.3V to 5V DC
temperature: -40°C to +85°C
Media Compatibility
✓ RF coaxial cables ✓ Printed circuit boards (FR-4 material) ✓ Shielded enclosures
Unsuitable: High-voltage electrical discharge environments
Sizing Data Required
  • Carrier frequency range (MHz/GHz)
  • Modulation scheme (e.g., QPSK, QAM, FSK)
  • Required data rate/bandwidth (Mbps)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Signal Degradation
Cause: Component aging (e.g., capacitor drift, transistor degradation), thermal stress from poor heat dissipation, or contamination on circuit boards affecting signal integrity.
Power Supply Failure
Cause: Voltage spikes/transients, electrolytic capacitor drying out or swelling, or overheating due to inadequate ventilation or dust accumulation.
Maintenance Indicators
  • Intermittent or distorted output signals (audible as noise in audio modems, visible as data errors in digital systems)
  • Unusual heat emission or burning smell from the unit casing, indicating potential overheating or component failure
Engineering Tips
  • Implement regular thermal management checks: Ensure proper ventilation, clean air filters, and verify cooling fans are operational to prevent overheating of sensitive electronic components.
  • Use surge protection and voltage regulation: Install uninterruptible power supplies (UPS) or line conditioners to protect against power anomalies and extend the lifespan of power supply components.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 Quality Management Systems IEC 61000-6-2 Electromagnetic Compatibility EN 55032:2015+A11:2020 Electromagnetic Emissions
Manufacturing Precision
  • Carrier Frequency Stability: +/- 0.001%
  • Modulation Depth Accuracy: +/- 2%
Quality Inspection
  • Bit Error Rate (BER) Testing
  • Spurious Emission Spectrum Analysis

Factories Producing Modulator/Demodulator

Manufacturer profiles with relevant production capability in China

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What are the primary applications of this modulator/demodulator in computer and optical product manufacturing?

This modulator/demodulator is used in data communication systems, fiber optic networks, wireless transmission equipment, and signal processing devices within computer, electronic, and optical manufacturing applications.

Why are semiconductor materials like silicon and gallium arsenide used in this modulator/demodulator?

Silicon provides cost-effective integration with standard electronics, while gallium arsenide offers superior high-frequency performance and efficiency for optical and high-speed communication applications.

How do the oscillator, mixer, filter, and amplifier components work together in this modulator/demodulator?

The oscillator generates carrier signals, the mixer combines/modulates or separates/demodulates signals, the filter removes unwanted frequencies, and the amplifier boosts signal strength for reliable transmission and reception.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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