Frequency Electronics, Inc. FEI-Zyfer, Inc.
GPS Time and Frequency Systems

FEI Corporate Profile


FEI-Zyfer, Inc.
7321 Lincoln Way,  Garden Grove, CA 92841-1428
Main Office: 714-933-4000
Fax:  714-933-4001
Sales: 714-933-4002
Technical Support: 714-933-4003

Download a map to the FEI-Zyfer headquarters building in Garden Grove, California

FEI-Zyfer Overview
FEI-Zyfer's parent company, Frequency Electronics Inc., was founded in 1961 and quickly gained world prominence in the Precision Quartz Crystal Oscillator Technology. FEI's ability to design, develop and fabricate oscillators for the new demanding requirements gave rise to its 80% world market share of spacecraft clocks, which it has dominated for over 40 years. In the ensuing '80s and '90s, FEI's technology base expanded to other precision oscillator products, including Rubidium and Cesium Atomic oscillators, as well as a host of ground and space-borne RF products and power sources. Today, FEI is a full service producer of precision frequency sources, RF and microwave components and systems, telecom systems, and network security products; second to none in technology. Throughout the years, FEI received many awards and commendations for product and service excellence from NASA, DoD, and related contractors.

Prior to joining the FEI family, Zyfer was part of Odetics Inc., which spawned several technology-related subsidiaries, including Zyfer. Originally named Odetics Telecom, established in the mid-'80s, was incorporated as Zyfer Inc. in 1999. Among other pursuits, Zyfer embarked on a journey to enter the GPS-related telecommunication market, focusing on GPS-aided precision time and frequency generation and synchronization products. Taking advantage of the boom in the wireless industry, Zyfer played a major role in populating Korean cell-sites with more than 6,000 synchronization systems. This success lead to the development of other synchronization-related products, which form the basis of the FEI-Zyfer product-set, oriented toward the needs of the communications system integrator. FEI- Zyfer's core-competencies are:

  • GPS Systems Expertise — Satellite, User, and Control Segments
  • SAASM GPS military receiver technology and applications to Communications and Command/Control terminals
  • GPS/Oscillator Disciplining for improved performance and holdover
  • WAAS and GPS-augmentation systems application to communications
  • Applications and Imbedded software design and architectures

The FEI-Zyfer team is expert in most aspects of the synchronization field, including the related precision frequency generating components. The team is composed of innovative people who, either during previous employment or as part of FEI-Zyfer, have left their mark in the synchronization industry with the following developments:

  • 1st space-rated Rubidium Atomic oscillator for the Block-I/II GPS satellites and the 1st military Rubidium atomic oscillators
  • 1st to develop the world's smallest Rubidium atomic oscillator and introducing this hi-tech product to the telecom industry
  • 1st GPS-aided Time and Frequency Synchronization systems that fueled the wireless industry and has become a world-standard
  • Contribution to the development of the 1st SAASM-GPS military receiver and its direct-P(Y) acquisition functionality
  • 1st to develop the use of the SAASM-GPS technology for military timing and synchronization
  • 1st to develop the concept of using WAAS for time and frequency applications

As an ISO-certified company, FEI-Zyfer offers high-performance, innovative, and cost-effective solutions for a variety of in-the-clear and secure communication networks applications.

  Industry and Market Overview  
The precision time, frequency, and synchronization industry began in ancient times with the need for knowing precise time throughout an extended geographic area for observance of religious rituals, warfare, navigation of ships, and ground travel. In most recent history, precise time forged the industrial revolution when it became the control mechanism for world train travel and industry machinery. Only a few decades ago, keeping a relatively accurate time-scale was only possible in limited geographic areas. But with the advent of the GPS satellite navigation system and its on-board master atomic clocks, it is now possible to disseminate precise time (and frequency) to the entire world, synchronizing its users to an accuracy of better than 100 billionth of a second. As a result, the need for precision time and frequency has touched almost every aspect of our lives. In the commercial sector for example, it is the heart of our high-tech society, giving rise to our new world of broadband communications and interconnectivity as well as navigation/positioning capabilities for civil and individual users; and there is no end in sight for applications. In the governmental/military communities, it is the engine that fuels the new military technologies of precise navigation, weapons targeting, and secure communications, command, and operational control.

The precision time/frequency/synchronization industry today makes use of the GPS system by extracting mainly its precise time capability from the highly accurate and stable atomic clocks on-board each satellite. This is done by using GPS timing receivers and electronically coupling its signals to steer precision oscillators to stay on track in both frequency and resultant time. These sync systems in turn become the heart of the next level system, which use its outputs to generate a host of frequencies and signal framing rates to synchronize the network terminals and its users. For example, sync systems used in cell phone base-stations provide the source for the transmission frequencies that carry the data between cell-sites and the cell phone users, distribute UTC time, and synchronize all the stations in the network so the user's conversation is seamlessly transferred from one cell site to the next. The biggest users of these precision sync technologies are all the communications related industries, government/military services, and public utilities.


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