The rubidium atomic clock is a sophisticated timekeeping device that leverages the hyperfine transition of rubidium-87 atoms to achieve exceptional frequency stability and accuracy. By utilizing the precisely defined energy transitions of rubidium atoms, this type of atomic clock can maintain time with remarkable precision, typically losing only one second every 100,000 years. Rubidium clocks operate by detecting the frequency of microwave radiation that causes rubidium vapor to change its energy state and adjusting the microwave frequency until it matches the atomic transition frequency, creating a highly accurate time reference.

Rubidium Atomic Clock | Compact High-Stability Time Reference

Trusted Frequency Standards for Telecom, Energy, and Scientific Applications

At California Triangle, we design and deliver advanced Rubidium Atomic Clocks (Rb clocks) that offer exceptional long-term stability, compact integration, and optimized cost-performance balance. Ideal for telecom infrastructure, power grids, time servers, and satellite synchronization, our rubidium clock solutions support scalable and customizable deployment across time-sensitive environments.

What Is a Rubidium Atomic Clock?

A Rubidium Atomic Clock is a high-precision timekeeping device that utilizes the microwave transitions of Rubidium-87 atoms to generate a stable frequency reference. Compared to quartz or oven-controlled oscillators, Rb clocks provide:

• Superior long-term stability (10⁻¹¹ or better)

• Quick warm-up time

• Smaller form factor compared to cesium standards

• Excellent holdover performance for backup synchronization

  
  

Applications Across Industries

Our Rubidium Clocks are embedded in time-critical systems including:

• 4G/5G telecom base stations and core network synchronization

• IEEE 1588v2 Grandmaster clock systems as primary or holdover clocks

• Smart grids and substation equipment requiring secure time distribution

• Precision test & measurement instruments

• Banking/finance systems for accurate time-stamping

• Aerospace and satellite platforms as GNSS-alternative timing

California Triangle’s Rubidium Clock Advantage

 Superior Holdover & Aging Performance

Our rubidium clock modules offer industry-leading frequency stability with low aging drift, ensuring reliable timekeeping even under power or GPS outages.

Compact Design, Easy System Integration

With a modular design, compact footprint, and rich interface options (1PPS, 10MHz, RS232/TTL), our Rb clocks are ideal for embedded system integration.

Robust Temperature Compensation

Utilizing TCXO-enhanced rubidium technology, our products maintain performance across wide temperature ranges—ideal for outdoor and industrial environments.

Low Power Consumption, Long Service Life

Designed for 24/7 operation with ultra-low maintenance, our Rb clocks offer MTBF >100,000 hours, supporting mission-critical deployments.

Fully Self-Developed Timing Core

We independently develop all timing-related IP blocks, including FPGA timing logic, rubidium lamp control circuitry, and phase-locked loop algorithms—ensuring supply stability and technical depth.

Global Deployment, Industry-Proven

• Used in telecom networks across 11+ countries

• Integrated into 1000+ client systems

• Compliant with international timing standards (ITU-T G.811, IEEE 1588, etc.)

• Custom design services available for form factor, output specs, and communication protocol

Optimize Your Timing Infrastructure Today

Looking to integrate a rubidium-grade frequency standard into your telecom, energy, or industrial system?
California Triangle’s Rubidium Atomic Clock solutions provide unmatched precision, scalability, and technical support.