Filtering Network: Frequency Range 10 Hz to 100 MHz

Q: What is the difference between passive and active filtering networks in noise generators?

Passive networks use only resistors, capacitors, and inductors, offering simplicity and reliability but limited precision. Active networks incorporate operational amplifiers for steeper roll-offs and adjustable gain, ideal for complex spectral shaping.

Q: How does a filtering network affect noise generator accuracy?

It ensures output noise matches target spectral densities by removing unwanted frequencies. Poor design can introduce phase distortion or amplitude ripple, degrading calibration validity in testing applications.

Component Specifications

Definition

A filtering network is a passive or active electronic circuit integrated into noise generators to modify spectral content by applying frequency-dependent attenuation or amplification. It typically consists of resistors, capacitors, inductors, and operational amplifiers arranged in configurations like low-pass, high-pass, band-pass, or notch filters. This component ensures generated noise meets precise spectral density requirements for testing, calibration, or signal processing applications.

Working Principle

Operates by impedance-based frequency selectivity: passive filters use RLC networks to create frequency-dependent voltage division, while active filters employ op-amps with feedback networks to achieve precise roll-off characteristics. The network modifies the broadband noise signal from the generator's source by attenuating unwanted frequencies and preserving desired bands.

Materials

Ceramic or film capacitors (X7R, C0G dielectrics), metal film resistors (±1% tolerance), ferrite-core inductors, FR-4 PCB substrate, gold-plated connectors, silicone conformal coating.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Impedance	50 Ω or 75 Ω matched
Insertion Loss	< 0.5 dB in passband
Power Handling	Up to 1 W continuous
Frequency Range	10 Hz to 100 MHz
Attenuation Slope	24 dB/octave typical
Temperature Range	-40°C to +85°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 3744, IEC 61260, ANSI S1.11

Parent Products

This component is used in the following industrial products

Noise Generator

The Noise Generator is a specialized electronic component within the Entropy Source Module, designed to produce random electrical noise signals.

View Product Details

Engineering Analysis

Risks & Mitigation

Component overheating under high power
Frequency drift due to temperature variations
Impedance mismatch causing signal reflection

FMEA Triads

Trigger: Capacitor dielectric aging
Failure: Reduced attenuation accuracy at high frequencies
Mitigation: Use C0G/NP0 capacitors with stable dielectrics and implement periodic recalibration

Trigger: Solder joint fatigue from thermal cycling
Failure: Intermittent signal loss or increased insertion loss
Mitigation: Apply strain relief on connectors and use high-temperature solder (SnAgCu)

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Frequency response ±0.5 dB, impedance matching VSWR < 1.2:1

Test Method

Network analyzer sweep (10 Hz-100 MHz) per IEC 61260, with thermal cycling from -40°C to +85°C

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Filtering Network

Manufacturer profiles associated with Filtering Network.

Sourcing Filtering Network from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

Related Components

Chrome Plating

Hard chrome plating is an electroplating process that deposits a layer of chromium onto metal surfaces to enhance wear resistance, corrosion protection, and reduce friction for hydraulic cylinder piston rods.

Upper Tool (Punch)

Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.

Main Frame

The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

Shaft Bearing

Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Frequently Asked Questions

What is the difference between passive and active filtering networks in noise generators?