GNSS multi-frequency high-precision timing products have been developed to meet the requirements of 5G communication

Developed GNSS smart antenna (antenna timing integrated machine)

Developed a data management device for remote electronically adjustable antennas for mobile communications.

Developed an intelligent alarm device for mobile communication base stations.

Developed GPS and GNSS timing antennas with different specifications and different gains. At the same time, a multi-mode built-in GNSS timing box was developed to reduce costs.

It is the first in China to adopt U-blox multi-mode receiving module and develop an external multi-mode GNSS timing box with anti-malicious environment, which can receive and process GPS, GLONASS, BEIDOU, Galileo, QZSS multi-satellite system information at the same time, which can be used for external use. It can also be used internally, which has greatly promoted the application range of the market, with mass production reaching 300,000 units.

It is the first in China to develop a GPS time service box with holdover function. The Holdover indicator is 1.5us/24h, which is currently the highest level of precision in market applications.

For Nokia's 4G mobile network applications, GPS timing boxes with U-blox receiver modules were developed and put on the market in large numbers. At the same time also developed GPS power splitter products.

Began to enter the field of mobile communication, research and development of GNSS timing box

Started the design and production project of wireless LAN amplifier

Developed passive microwave components and radio frequency components for mobile phone base stations

Development of RF lumped components and RF filters

Developed and provided a series of EOC (Ethernet Over Coax) products for equipment manufacturers in the cable TV network industry

Developed and provided a series of MDF xDSL splitters for 3M, Sunsea and other companies

Developed and provided VDSL2 splitter for the Siemens Communication IPTV broadcasting system serving the FIFA-2006 Munich World Cup

Develop and provide test access matrix (TAM) xDSL chassis to Siemens Communications, Alcatel, and UTStarcom, and perform testing and diagnosis for the user line qualification

Separator developed a standard balance weight balun for separator testing; signed a framework contract with Siemens Communications and became its main supplier of xDSL separators.

Developed ADSL distributor board for central office for Siemens Communications

Developed and delivered ADSL user-side splitter, CoreLogic occupies one-third of the market share of Chinese user-side splitter

为ISDNEquipment development network transformer

Developed and approved China Telecom network accessISDN NT和TASeries products

Beijing CoreLogic Communication Co. Ltd. was established in Beijing, China