Superheterodyne receiver - Wikipedia
网页A superheterodyne receiver, often shortened to superhet, is a type of radio receiver that uses frequency mixing to convert a received signal to a fixed intermediate frequency (IF) which can be more conveniently processed than the original carrier frequency.
超外差 - 百度百科
网页超外差（superheterodyne），原是超声外差（supersonic heterodyne）的缩写，并非指本振源频率比信号频率高。 超外差接收机中有一个振荡器叫本机振荡器。 它产生的高频电磁波与所接收的高频信号混合而产生一个差频，这个差频就是中频。
超外差收音机 - 维基百科，自由的百科全书
网页超外差原理是一种利用机器内一个可变的振荡器产生的电波和外来信号混合以产生固定频率的中频信号（通常调幅无线电是450千赫兹或455千赫兹（也有262.5千赫兹），调频无线电是10.7 兆 赫兹） [1]。. 设 f 为外来信号的频率. 为可变的内部振荡器产生的信号的频率 ...
Superheterodyne - an overview | ScienceDirect Topics
网页The superheterodyne architecture is widely used in devices where high performance and receiver (and transmitter) flexibility is desired. In this section, we will discuss the traditional superheterodyne architecture along with the IF-sampling receiver used …
Superheterodyne Receiver - an overview | ScienceDirect Topics
网页The superheterodyne receiver is the most common configuration for radio communication. Its basic principle of operation is the translation of all received channels to an intermediate frequency (IF) band where the weak input signal is amplified before being applied to a …
Superheterodyne Receiver | Analog Devices
网页A superheterodyne receiver (or superhet) is a radio receiver that combines a locally generated frequency with the carrier frequency to produce a lower-frequency signal that is easier to demodulate than the original modulated carrier.
#339: Basics of a Super-heterodyne Receiver - YouTube
网页This video presents the basics of the superheterodyne receiver, and the function of each of the blocks. The operation of the frequency conversion in the mix...
Superheterodyne Radios Explained - Hackaday
网页2019年1月3日 · We’d say there are several common architectures for receivers and one of the most common is the superheterodyne. But what does that mean exactly?
Superheterodyne AM Receiver - Working with Block Diagram …
网页2020年3月12日 · A superheterodyne receiver uses signal mixing to convert the input radio signal into a steady intermediate frequency (IF) that can be worked with more easily than the original radio signal that has a different frequency, depending on the broadcasting station. The IF signal is then amplified by a strip of IF amplifiers and then fed into a ...
Superheterodyne reception | Radio waves, Frequency, …
网页Superheterodyne reception, the commonest technique for recovering the information (sound or picture) from carrier waves of a range of frequencies, transmitted by different broadcasting stations. The circuitry, devised by Edwin H. Armstrong during World War I, combines the high-frequency current.
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