RF Input Connector: Frequency Range DC to 18 GHz, VSWR <1.5:1

Q: What is the purpose of an RF input connector in a spectrum analyzer?

It provides a reliable interface for connecting RF signal sources to the analyzer, ensuring minimal signal degradation for precise frequency and power measurements.

Q: How do I choose the right RF input connector for my spectrum analyzer?

Select based on frequency range, impedance match (usually 50 ohms), connector type compatibility (e.g., SMA, N-type), and environmental conditions like temperature and durability needs.

Component Specifications

Definition

A specialized coaxial connector designed to interface RF signals from external sources into a spectrum analyzer, ensuring minimal signal loss, impedance matching (typically 50 ohms), and shielding against electromagnetic interference for accurate frequency and amplitude analysis.

Working Principle

Operates by providing a secure, low-loss electrical pathway for RF signals through a coaxial structure, maintaining characteristic impedance to prevent reflections, with shielding to minimize noise and preserve signal integrity during transmission to the analyzer's input stage.

Materials

Body: Brass or stainless steel with gold or silver plating; Dielectric: PTFE (Teflon) or polyethylene; Contacts: Beryllium copper or phosphor bronze with gold plating; Insulation: High-temperature resistant polymers.

Technical Parameters

Parameter	Typical range	Notes & selection driver
VSWR	<1.5:1
Impedance	50 ohms
Durability	500 mating cycles
Connector Type	SMA, N-type, or BNC
Insertion Loss	<0.5 dB
Frequency Range	DC to 18 GHz
Operating Temperature	-55°C to +125°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

IEC 61169, MIL-PRF-39012

Parent Products

This component is used in the following industrial products

Spectrum Analyzer

An electronic instrument that measures the magnitude of an input signal versus frequency within the full frequency range of the instrument.

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Engineering Analysis

Risks & Mitigation

Signal loss due to improper mating
Impedance mismatch causing reflections
Mechanical damage from over-tightening
Corrosion in humid environments

FMEA Triads

Trigger: Loose connection or worn contacts
Failure: Increased insertion loss and signal attenuation
Mitigation: Regular inspection and proper torque application during mating; use connectors with higher durability ratings.

Trigger: Contamination or corrosion on contacts
Failure: Poor electrical contact leading to measurement errors
Mitigation: Implement cleaning protocols with approved solvents; store in controlled environments.

Industrial Ecosystem

Compatible With

Spectrum analyzers, signal generators, network analyzers

Typical Suppliers & Equivalents

Amphenol, Huber+Suhner, Rosenberger, TE Connectivity

Compliance & Inspection

Tolerance

Impedance tolerance ±1 ohm, dimensional per IEC 61169

Test Method

VSWR measurement, insertion loss testing, mechanical durability cycles per MIL-STD-202

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.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of RF Input Connector

Manufacturer profiles associated with RF Input Connector.

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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

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Frequently Asked Questions

What is the purpose of an RF input connector in a spectrum analyzer?