High Throughput Satellite Communication Research Articles

Design of 71–76 GHz Double-Corrugated Waveguide Traveling-Wave Tube for Satellite Downlink

The growing interest in wireless high-data-rate communications at millimeter waves for both terrestrial networks and satellite communications is stimulating novel solutions to overcome the strong atmospheric attenuation. In particular, the development of high-throughput satellite communication systems for Internet distribution is fundamental to complementing the terrestrial networks and to cover regions not connected to terrestrial backbones, such as at sea or remote areas. Ku-band and Ka-band satellite systems are presently available. Recently, the W-band (71–76 GHz and 81–86 GHz) has been allocated for multigigabit transmissions, providing 5-GHz bandwidth for both uplink and downlink. However, it has been estimated that for enabling high-throughput W-band satellite communication systems, transmission power higher than 50 W is needed. In this paper, a 71–76 GHz double-corrugated waveguide (DCW) traveling-wave tube (TWT) is designed as an amplifier for high-data-rate satellite downlink, with about 70-W output power. The dispersion characteristic of the designed DCW is experimentally validated by a cold test. The proposed TWT is also a test vehicle, scaled in frequency, for a future novel 220-GHz DCW TWT for terrestrial wireless networks.

Construction of a Flexibility Analysis Model for Flexible High-Throughput Satellite Communication Systems With a Digital Channelizer

Recent years have seen the development of a satellite communication system called a high-throughput satellite (HTS), which enables large-capacity communication to cope with various communication demands. Current HTSs have a fixed allocation of communication resources and cannot flexibly change this allocation during operation. Thus, effectively allocating communication resources for communication demands with a bias is not possible. Therefore, technology is being developed to add flexibility to satellite communication systems, but there is no system analysis model available to quantitatively evaluate the flexibility performance. In this study, we constructed a system analysis model to quantitatively evaluate the flexibility of a satellite communication system and used it to analyze a satellite communication system equipped with a digital channelizer.

Ka band enabling technologies for high throughput satellite (HTS) communications

AbstractGlobal demands for personal, businesses and governments connected data continue to challenge our communication technologies and infrastructure. Both wired and wireless terrestrial communications systems are realizing advancements in technologies and their applied infrastructure enhancements. These ever evolving terrestrial communication systems are providing for increased data capacity, an enhanced quality of service and a lower cost per bit for all users. Satellite systems are especially challenged in order to remain relevant for these same enhancements in order to augment and compete with these terrestrial global communication systems. In order to meet these global demands the next generation satellite communications systems are evolving by advancing their own technologies and infrastructure. The resulting next generation communication satellite systems include utilization of the Ka frequency band and also through the application of other key advancements in antenna systems and processing payloads. This paper provides an overview of many of the communication satellite system advancements which are in part enabled through the utilization of the Ka frequency band. Copyright © 2015 John Wiley & Sons, Ltd.