分谐波 meaning in English
sub harmonic
subharmonic wave
subharmonics
submultiple
Examples
- Subharmonic resonance response
分谐波共振响应 - Shg sub harmonic generator
次分谐波发生器 - 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。 - The design process consisted of computer design by circuit simulation software integrate with electromagnetic simulation software , fabrication of microstrip bpf 、 lpf 、 the match circuits , cavity and test . when rf frequency is 91 ~ 97ghz , lo frequency is 47ghz , power is 10 dbm . the best conversion loss of the 2 and 4 sub - harmonic mixer is 13 . 5 db and 23 . 5db which is shown in the test
实测表明,在本振为47ghz ,功率10dbm ,测试射频带宽为91ghz 97ghz时,二次与四次分谐波混频器变频损耗最优处分别为12 . 7db和23db 。最后对实验结果进行分析并提出改进措施。