频谱分析仪
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用感恩的心去面对帮你的人，你会发现人间真的有许多无私与美好；用宽容的心去面对伤你的人，你会觉得他们其实也都不容易。
人生，总有许多沟坎要跨越，岁月，总有许多遗憾要弥补，生命，总有许多迷茫要领悟。
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频谱分析仪
这个应用程序注意礼物的基本测量原理的射频参数测试进行码分多址(CDMA)基站及其组件。
它主要是重点选择指定的测试是基于- 95系统,虽然其他测试一般在业内也覆盖。
虽然这些测量是在大多数产品的阶段周期,重点是那些制造和产品开发/测试设计验证。手机不是因为他们有独特的测试挑战。
全世界CDMA产业正在迅速增长。对各种技术、经济和即使是原因,越来越小,少用权力,花费少,覆盖较小的区域,并提供更高的能力比以往任何时候都。
在产品开发领域,设计师必须了解新技术趋势和深入知识的优点和缺点。一些技术的例子
This application note presents the fundamental measurement principles for the RF parametric tests
performed on Code Division Multiple Access (CDMA) base stations and their components. It primarily
focuses on selected tests specified for the IS-95-based systems, although other tests commonly made
in the industry are also covered. While these measurements are made in most phases of the product
lifecycle, the emphasis is on those tests made in manufacturing and product development/
design verification. Mobiles are not covered because they have unique testing challenges.
The CDMA industry is growing rapidly throughout the world. For a variety of technical, economic, and
even political reasons, base stations are becoming smaller, using less power, costing less, covering a
smaller area, and providing higher capacity than ever before.
In the product development area, designers must be aware of new technology trends and have in-depth
knowledge of the advantages and disadvantages. Some examples of technology trends include:
– the use of multi-carrier linear power amplifiers for wider bandwidth and lower distortion
– higher-performance DAC/ADCs for increased flexibility and lower cost
– higher integration of components for smaller footprint, size, weight and power
– less expensive memory
– improved DSP algorithms with dedicated chipsets
– a doubling of microprocessing capacity every two years
In manufacturing there is a completely different set of issues. Manufacturing engineers are faced with
needs such as:
– decreasing time-to-volume
– reducing costs
– increasing production flexibility using multiple-format lines
– increasing asset utilization and re-use
– exceeding quality thresholds
– maintaining high test-equipment uptime
– providing coordinated global support of all virtual manufacturing lines
频谱分析仪
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