heterodyne receiver中文什么意思
外差式收音机。
- heterodyne: n. 【无线电】外差法，【无线电】外 ...
- receiver: n. 1.接受者。 2.收税人，收税 ...
- heterodyne optical receiver: 外差接收机
例句与用法
- Mixers are the key components of many microwave and millimeter - wave systems . the super - heterodyne receiver is always applied in modern communication system , mixer becomes the key component as is at the first part of system . but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave . sub - harmonic mixer is a good solution to this problem now . in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency . in this paper the design and fabricate of sub - harmonic hmic mixers ( 2 , 4 ) at w - band are introduced
混频器是微波通信、射电天文学、雷达、等离子物理、遥控、遥感、电子对抗,以及许多微波测量系统中至关重要的部件。在现代通信系统中,毫米波频段通常采用超外差接收机,混频器作为第一级就成为关键部件。由于在毫米波频段,同频段高性能的本振源成本高,技术难度大,采用分谐波混频技术是解决此问题的有效途径,只需射频频率1 / 2 、 1 / 4甚至1 / 8的本振频率即可实现混频。 - By using irm , heterodyne receiver with good image rejection and mmw - to - if once frequency conversion can be realized , which simplified receiver constitution prominently . the number of local oscillation ( lo ) sources is reduces and electromagnetic compatibility ( emc ) of mmw system is improved . also , the size , weight , power consume and cost of mmw receiver is reduced
采用毫米波镜频抑制混频器,可在保证镜频抑制性能的前提下,采用1次变频接收机,从而大大简化接收构成,减少本振数量,改善毫米波系统电磁兼容性,减小接收机体积、重量、功耗,并降低成本。
英文释义
名词- a radio receiver that combines a locally generated frequency with the carrier frequency to produce a supersonic signal that is demodulated and amplified
同义词：superheterodyne receiver, superhet
