微波信号发生器
本款微波信号发生器，具有高稳定性和精确度，同时具有优良的性价比。20GHZ.
Berkeley Nucleonics' Model 845 is a low-noise and fast-switching microwave signal generator covering a frequency range from 9KHz up to 20 GHz+. The Model 845 offers a wide and accurately-levelled output power range with high spurious suppression. Advanced frequency synthesis with fractional-N divider makes for low SSB phase noise and micro-Hz frequency resolution.
The Model 845 also includes AM, DC-coupled, low distortion wideband-FM, PM, FSK and PSK, frequency chirp, and fast pulse modulation with internal pulse train generator as standard. Three internal modulations sources are available. All modulation modes of the Model 845 can be combined. This allows the generation of complex modulation signals for modern communication and location systems.
The Model 845 is ideally suited for applications where a high-quality CW microwave source with analog modulation is required. It includes AM; DC-coupled wideband-FM, PM, FSK and PSK, and fast pulse modulation as standard. Optionally, frequency chirps and programmable pulse trains get be provided. The Model 845 operates with an ultra-stable temperature compensated 100 MHz reference (OCXO) and can be phase-locked to any external reference from 1 to 250 MHz. Additionally, The combination of pulse modulation and FM simulates Doppler effects or chirp signals. Simultaneous AM and pulse modulation provides the types of signal occurring in pulse radar applications with rotating antenna. The combination of FM and AM can be used to check fading effects of FM receivers.
Features
• < 200 µs frequency switching time
• Very low SSB phase noise: -108 dBc/Hz at 10 GHz and 20 kHz offset
• Comprehensive AM, low-distortion, wideband
• DCFM and high-speed pulse modulation for testing all types of receivers
• LAN/USB/GPIB (optional) remote control with SCPI
• 1999 command set
• Input for USB power sensor
• Powerful trigger and sweeping modes
Applications
• R&D low noise signal source
• Production testing (industry-leading switching times; high dynamic range)
• Service and maintenance (battery operation)
• Signal simulation (radar, WiMax, UWB)
• Aerospace and defense (pulse modulator, chirps)
双极科技（香港）有限责任公司（简称：双极科技）是一家专业的生物科技和材料表面测试以及处理的专业设备供应商，并为客户提供系统集成服务商。务范围涵盖国内各著名高校、中国科学院所属各研究所、信息产业部所属各研究所、航空工业总公司所属各研究所等不同系统内的研究机构及相关领域内的各大生产型公司。
目前已经与美国、英国、法国、德国、意大利以及日本等国企业，成为合作伙伴，为中国的科技工作者和研发团队提供服务。我们以国外高端产品为依托，以专业销售技术队伍为源泉，以为客户提供解决方案为目标，凭借富有朝气的创新文化，实现跨越式发展。
我们公司全体同仁努力工作的目标是：把双极科技公司建设成为一个微系统方面最优秀的公司。我们将以全体用户的利益为重，尽我们最大的努力，为各研究领域内的用户提供全方位的优质服务。衷心希望得到您们一如既往的支持！
