超外差檢波英文怎麼說

超外差檢波 的英文翻譯

超外差檢波 例句

1. Most laser ultrasonic nondestructive testing systems are based on the heterodyne principle, but the laser ultrasonic nondestructive testing system which is based on the homodyne principle
   而且目前所研製的激光 超 聲無損 檢 測系統基本上採用 外 差 干涉的方式，而零 差 干涉方式國內尚未見到有相關報道，這屬于論文的主要創新點。
2. In receiver system development, there are some innovations in the design of high linearity and high dynamic range, also in the circuitry realization
   接收機採用兩次變頻 超 外 差 式結構設計，第一中頻為高中頻。接收機頻率合成器採用dds來實現1hz的頻率解析度。
3. The rf receiver consists of rf front end and baseband regulation module. the high - intermediate - frequency superheterodyne structure is adopted in the final scheme. the fine sensitivity of the receiver is achieved by two cascaded lna in the front of the system
   系統採用 超 外 差 式變頻結構設計，兩級低噪聲放大單元級聯保證了接收機靈敏度，兩級增益控制單元實現了所要求的接收機動態范圍，並且整機的線性度也得到了保證。
4. The high - intermediate - frequency superheterodyne structure with twice conversions is used. three cascaded agc units applies in the receiver system, one of them is used as the choice, for realizing a high dynamic range while the linearity of the system is well guaranteed
   系統採用了兩次變頻 超 外 差 式結構設計，第一中頻為高中頻。另 外 系統還包含了三級自動增益控制單元，其中一級agc作為選項，實現了較大的動態范圍，並且整機的線性度也得到了保證。
5. This design keep the twice frequency transform and the superheterodyne structure in analog receiver, and use programmable direct digital synthesizer ( dos ) in rf section. use this method, we can not only inherit the advantage of high sensitivity and high selection in traditional design, but also improve the automation of the equipment
   該方案保留了原模擬接收機二次變頻的 超 外 差 結構，在射頻前端利用了可編程的數字頻率合成器（ dds ） ，這樣既繼承了原接收機的高靈敏度，高選擇性的優點，又提高了它的接收機自動化特性。

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