Rubidium Standard Enclosure

Frequency drift in aircraft timing references corrupts GPS navigation accuracy and communication synchronization degrading system performance. Rubidium Standard Enclosure provides precision housings for atomic frequency standards, oven-controlled oscillators, and phase-locked loop circuits.

Material & Grade

Aluminum Alloy – 6061-T6, 7075-T6
Stainless Steel – SS304
Aerospace-grade aluminum
Low-expansion materials
Sheet thickness: Up to 3.0mm capable

Overall Dimensions

Maximum capable: 300mm (H) x 250mm (W) x 200mm (D)
Customizable based on rubidium oscillator configuration

Finish & Coating

Anodizing – MIL-A-8625 Type II, Type III
Powder Coating – Aerospace-grade
Black anodized finish
Conductive coating (EMI shielding)
Thermal dissipation coating

Fabrication Process

CNC Precision Machining (±0.01mm)
CNC Laser Cutting
TIG Welding (aerospace-grade)
CNC Press Brake Forming
EMI gasket groove machining
Thermal interface machining

Hardware & Fasteners

Aerospace-grade fasteners (AN/MS standards)
Titanium hardware (weight reduction)
EMI/RFI gasket hardware
Thermal conductive mounting hardware
Grounding provisions
Vibration-resistant fasteners

Product Description

Rack-mounted or avionics bay configurations accommodate timing hardware with external dimensions reaching 300mm while maintaining thermal stability. We engineer low-expansion construction minimizing dimensional changes during temperature variations that could affect oscillator performance. Through electromagnetic shielding and vibration isolation, these enclosures enable stable frequency generation supporting aerospace timing applications.

Mounting Type

Aircraft rack mounting
Avionics bay integration
Satellite platform mounting
Vibration-isolated mounting
Panel mounting provisions
Navigation system integration

Sealing & Pressurization

EMI conductive gasket sealing
Hermetic sealing provisions
Altitude compensation vents
Pressure equalization systems
Multi-stage gasket sealing
Temperature-compensating seals

Environmental Testing

Operating Temperature: -40°C to +75°C
Storage Temperature: -55°C to +85°C
Altitude: Up to 70,000 feet
Humidity: Up to 95% RH (non-condensing)
Thermal cycling resistance
Vacuum compatibility

Shock & Vibration

Random vibration tolerance
Sine vibration testing
Shock pulse resistance (MIL-STD-810)
Launch vibration qualification
Transportation shock resistance
Precision mounting stability

EMI/RFI Shielding

Shielding Effectiveness: 80-120 dB
Frequency range: 10 Hz to 40 GHz
Continuous RF seam welding
Multi-layer shielding construction
Filtered power entry provisions
Phase noise isolation

Certification Standards

ISO 9001:2015 Manufacturing
AS9100 (Aerospace Quality Management)
RTCA DO-160 (Environmental Testing)
MIL-STD-810 (Environmental Engineering)
MIL-STD-461 (EMI/EMC)
NASA standards (space applications)
RoHS Compliant

Technical Advantages

Rubidium oscillator stability depends on maintaining constant internal temperatures preventing frequency drift from thermal gradients. Addressing this requirement, precision thermal interfaces transfer heat from oven-controlled crystal oscillators to external heat sinks. Low-expansion aluminum alloys minimize enclosure dimensional changes during temperature cycling maintaining mechanical stability.

Phase noise performance requires electromagnetic isolation preventing external signals from modulating oscillator output frequencies. Multi-layer shielding construction with nested enclosures achieves attenuation exceeding 100dB at microwave frequencies. Moreover, filtered power entry modules suppress conducted emissions preventing switching noise from corrupting reference signals.

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Industry Applications

Satellite Communication Payloads

Protects rubidium oscillators maintaining carrier frequency stability in commercial and military communication satellites.

Deep Space Missions

Secures atomic frequency standards providing timing references for spacecraft tracking and radio science experiments.

Test and Measurement Equipment

Manages portable rubidium standards calibrating frequency counters and signal generators in aerospace testing.

Distributed Antenna Systems

Consolidates timing references synchronizing cellular base stations and emergency communication networks.

Optimized for Frequency Stability

Rubidium standard configurations vary from compact portable units to rack-mounted systems with multiple redundant oscillators. Frigate manufactures Rubidium Standard Enclosures meeting RTCA DO-160 qualification with aging rate specifications supporting long-duration missions.

Vibration-isolated mounting provisions decouple oscillator assemblies from airframe vibration preventing acceleration-induced frequency modulation. Hermetic sealing options enable operation in unpressurized aircraft compartments and space vacuum environments.

Having Doubts? Our FAQ

Check all our Frequently Asked Questions

Can precision thermal interfaces in Rubidium Standard Enclosures transfer heat from oven-controlled oscillators to external heat sinks?

Stable oscillator performance depends on controlled heat transfer away from the oven assembly. Frigate defines precision-machined thermal interface surfaces that promote consistent contact between internal heat sources and external sinks, helping regulate temperature gradients. Interface geometry and mounting pressure are typically adjusted based on thermal budgets and integration drawings provided for each program.

How does Frigate engineer low-expansion aluminum alloys in Rubidium Standard Enclosures minimizing dimensional changes during temperature cycling?

Dimensional stability across temperature extremes is addressed through deliberate material selection, where Frigate considers –

Low–coefficient-of-expansion aluminum alloy families

Heat treatment states matched to operating ranges

Wall thickness tuned to structural and thermal needs

Alloy selection is commonly refined according to mission temperature profiles and customer-defined tolerances.

Are multi-layer shielding constructions effective achieving attenuation exceeding 100dB at microwave frequencies preventing phase noise?

High attenuation levels require layered shielding strategies rather than single-wall designs, and Frigate incorporates –

Nested conductive barriers with controlled spacing

Absorptive and reflective layer combinations

Seam treatments that avoid leakage paths

Shield stack-ups are typically customized based on frequency range and allowable enclosure mass.

How does Frigate integrate filtered power entry in Rubidium Standard Enclosures suppressing switching noise from corrupting reference signals?

Power integrity is preserved by integrating filtering directly at entry points, where Frigate applies –

EMI-filtered connectors or feedthrough filters

Short internal routing paths to sensitive circuits

Ground reference continuity across filter stages

Filter ratings and layouts are usually selected based on supplied power quality specifications.

Does vibration-isolated mounting decouple oscillator assemblies from airframe vibration preventing acceleration-induced frequency modulation?

Mechanical vibration can translate directly into frequency instability if not properly managed. Frigate structures internal mounting systems that isolate oscillator modules from enclosure walls using tuned damping elements. Isolation approaches are generally adapted to the vibration spectrum defined by the aircraft or platform environment.

How does Frigate address hermetic sealing in Rubidium Standard Enclosures enabling operation in unpressurized aircraft compartments?

Operation in low-pressure environments requires robust sealing concepts, and Frigate evaluates –

Welded or brazed enclosure seams

Metal or elastomer seals matched to pressure cycling

Leak testing aligned to mission altitude requirements

Sealing methods are often selected based on pressure range and maintenance accessibility expectations.

Can nested enclosure construction provide electromagnetic isolation preventing external signals from modulating oscillator output frequencies?

Electromagnetic isolation improves significantly when multiple barriers are employed, and Frigate designs –

Inner RF-tight compartments around the oscillator

Outer structural shells for environmental protection

Controlled grounding paths between layers

Nested layouts are typically tailored to sensitivity levels specified for the reference output.

How does Frigate validate RTCA DO-160 qualification in Rubidium Standard Enclosures with aging rate specifications for long-duration missions?

Qualification for avionics use requires both environmental testing and long-term stability verification. Frigate aligns enclosure materials, finishes, and assembly processes to DO-160 categories, supporting vibration, temperature, and EMI testing. Aging rate considerations are addressed through test data correlation and documentation aligned to mission duration requirements.

Are altitude compensation provisions compatible with satellite payload requirements operating in space vacuum environments?

Vacuum operation introduces different stresses than atmospheric flight, and Frigate evaluates –

Pressure relief or venting strategies for launch phases

Material outgassing characteristics

Structural behavior under vacuum conditions

Design adaptations are typically driven by launch vehicle and orbital environment specifications.

How does Frigate optimize thermal stability in Rubidium Standard Enclosures maintaining constant internal temperatures preventing frequency drift?

Long-term frequency stability depends on minimizing internal thermal variation, and Frigate optimizes this through –

Insulation placement around oven assemblies

Controlled heat paths away from sensitive zones

Internal layouts that reduce thermal gradients

Thermal stabilization strategies are generally customized based on allowable drift limits and available cooling interfaces.

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LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

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GENERAL ENQUIRIES

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10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

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Rubidium Standard Enclosure

Product Description

Technical Advantages

Let's Get Started

Industry Applications

Optimized for Frequency Stability

Having Doubts? Our FAQ

Get Clarity with Our Manufacturing Insights

We'd love to Manufacture for you!

LOCATIONS

Registered Office

Operations Office

Other Locations

GENERAL ENQUIRIES

LOCATIONS

Registered Office

Other Locations

GENERAL ENQUIRIES

Get Your Quote Now

Components Built for Critical Performance

Engineered Products for Critical Applications

Rubidium Standard Enclosure

Product Description

Technical Advantages

Let's Get Started

Industry Applications

Optimized for Frequency Stability

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We'd love to Manufacture for you!

LOCATIONS

Registered Office

Operations Office

Other Locations

GENERAL ENQUIRIES

LOCATIONS

Registered Office

Other Locations

GENERAL ENQUIRIES

Get Your Quote Now

Rubidium Standard Enclosure

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Rubidium Standard Enclosure

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