Web Page sponsor Oxley Developments
09 Jul 15. Link Microtek, the manufacturer of RF and microwave components and subsystems, has introduced a new miniature dual-channel rotary joint that has been specifically designed to save space in antennas for Ka-band satellite-on-the-move communications systems, which are now being deployed for high-data-rate applications in both the military and commercial sectors.
With its high-power transmit channel implemented in a right-angle WR28 waveguide on the fixed (input) side and a female K-type coaxial connector on the rotating (output) side, the AM28CORJD rotary joint measures just 31.75mm (D) x 74.68mm (H), excluding the
50mm-diameter UBR320 standard bulkhead flange.
The central transmit channel covers Ka-band frequencies from 29 to 31GHz and delivers excellent microwave performance, with a maximum power rating of 40W CW, a typical insertion loss of only 0.6dB and a maximum VSWR of 1.25:1.
The L-band receive channel uses two female SMA coaxial connectors and operates over the frequency range DC to 2.15GHz. It offers a microwave power rating of 1W CW, a maximum DC current rating of 0.5A, an insertion loss of 0.25dB and a typical VSWR of 1.5:1.
Designed and manufactured at Link Microtek’s premises in Basingstoke, this robustly constructed rotary joint is fabricated from lightweight aluminium with an Iridite finish, and its performance under extreme environmental conditions either meets or exceeds the requirements of MIL-STD-810G.
Other rotary-joint configurations and sizes can be supplied on request, customised to suit specific antenna requirements.
08 Jul 15. Global military satellite market projected to hit $9.7bn.
The global military satellite market will reach $9.7bn by 2025, according to a forecast by market research firm Strategic Defense Intelligence. That represents a more than 70 percent increase over today’s $5.7bn market. ISR satellites will account for 36 percent of the market, followed by communications and then navigational satellites. “Many existing ISR satellites are about to reach the end of their operational life cycle, meaning that leading defense spenders need to replace these satellites in the next five to ten years,” said analyst Bharathi Bajaj. “Moreover, satellites are an alternative to expensive UAVs or reconnaissance aircraft, which is also driving growth,”
The U.S. will account for 41 percent of global market share. (Source: C4ISR & Networks)
07 Jul 15. A new development center will advance satellite sensing and communication technologies, broadly known as Radio Frequency (RF) payloads, at the Lockheed Martin (LMT) facility in Denver. The RF Payload Center of Excellence will focus on developing reconfigurable payloads and advancing satellite systems that many already rely on, from high-def television broadcasts to GPS transmissions and secure government communications.
The RF Payload Center of Excellence reduces cost and accelerates development by uniting researchers, manufacturers and analysts in one organization. Bringing people together improves schedule, reduces transportation costs and enhances collaboration between related teams.
[Find high-res infographics and video on the center’s website: http://www.lockheedmartin.com/us/ssc/rf-payload-centerofexcellence1.html]
The facility co-locates the majority of payload development, production and testing, a first for Lockheed Martin. The center serves as the hub for a network of experts in industry and academia focused on the future of RF technology. Lockheed Martin has shaped this technology arena for more than 50 years, producing 176 of these types of payloads.
“Enabling communications so people can make effective decisions is at the core of what RF systems do,” said Rick Ambrose, executive vice president of Lockheed Martin Space Systems. “Our new facility and network of experts position us to supp