Gospell Digital Technology: Advancing Digital TV Technologies Globally

Gospell Digital Technology Co. Ltd., founded in 1992 and headquartered in Chenzhou, China, has built a global presence for its high-quality products for digital TV (DTV) and triple-play applications. As a complete DTV and triple-play solution provider, the company handles R&D, manufacturing, business consultancy and planning, trade, delivery, project implementation, and after-sales service.

As the general manager of Gospell’s R&D center, Mr. Gang Ma manages a technical team whose focus areas include software, hardware, microwave, production, and quality assurance. Mr. Ma’s main responsibilities include formulating the company’s mid- to long-term R&D plan under the guidance of the company’s strategy, leading the R&D team to complete projects while cultivating the core competitiveness of the team, directing and supervising the implementation of the company’s R&D strategy and annual R&D plan, and conducting day-to-day management of the team.

“We have long been committed to providing our customers with superior solutions and services with our unique strengths,” said Mr. Ma. “We are excited when our products perform their tasks well and provide people with high-quality information and entertainment experiences.”

Gospell’s engineers continuously adopt emerging technologies to provide its customers with the most competitive solutions, along with quality that exceeds their expectations.

Challenges

  • Address interference between different channels in DVB-C modulators due to their high level of system integration

Solutions

Benefits

  • Gained the channels needed in a compact space without additional noise and with very low power dissipation

GOSPELL’s GQ-3680 is a new generation of modular and high-density IPQAM combining TS-over-UDP/RTP input and output, transport stream re-multiplexing, scrambling, PSI/SI processing and 16/32/64/128/256QAM modulation in 1RU. GOSPELL’s GQ-3680 is a new generation of modular and high-density IPQAM combining TS-over-UDP/RTP input and output, transport stream re-multiplexing, scrambling, PSI/SI processing and 16/32/64/128/256QAM modulation in 1RU.

Challenges

One of Gospell’s R&D team’s recent projects involved its digital video broadcasting-cable (DVB-C) modulators, which transmit an MPEG-2 or MPEG-4 family digital audio/digital video stream using a quadrature amplitude modulation (QAM) with channel coding. The engineers needed a way to address the interference between the different channels due to the high level of integration in the system.

Solution and Benefits

The Gospell team found the answer to its design challenge in the MAX5862 high-density downstream cable QAM modulator and MAX5868 16-bit, 5Gsps interpolating and modulating RF digital-to-analog converter (DAC). “Maxim’s solution provided enough channels in a very compact space without additional noise,” said Mr. Ma. “Our DVB-C modulators based on the MAX5862 and MAX5868 integrate 32 channels on a single board and up to 96 channels in a single chassis.”

The MAX5862 provides high-density QAM modulation with very low power dissipation (4.2W at 32 QAMs) in a 12mm x 17mm footprint. It is also flexible and configurable. The MAX5868 provides direct RF synthesis of 500MHz instantaneous bandwidth from DC to more than 2GHz. It consumes 1.5W at 5Gsps and is available in a 10mm x 10mm CSBGA package.

“When we chose a solution, our identity changed from a supplier to that of a prudent consumer. We not only focused on technology, but also on the services provided by technology vendors, request response, product roadmap, and technology sustainability. That's why we only choose to work with trusted suppliers like Maxim,” said Mr. Ma. “While shorter design cycles and lower power consumption are worthy of attention, we value the smaller form factor and better performance offered by the solution among all quantifiable results.”