单词 | Superheterodyne |
例句 | 1. Edwin Armstrong develops a receiving circuit - the superheterodyne. 2. A simple analysis of the superheterodyne AM radio circuit and the principle of assembly and debugging. 3. The high-intermediate-frequency superheterodyne structure with twice conversions is adopted in the final scheme. 4. In this paper, a superheterodyne receiver is taken as an example to illustrate the characteristic and effect of virtual experiment teaching. 5. The system adopts superheterodyne architecture. It consists of intermediate frequency (IF) band and radio frequency (RF) band hardware design. 6. Based on the fundamental of superheterodyne spectrum analyzers, this paper comprehensively analyzes the factors, which restrict the frequency range that an analyzer can operate down to. 7. Manual switch, superheterodyne receiver , good anti - jamming , with commutator, easy to install. 8. This paper discussed the double sideband noise figures and single side band noise figures of the superheterodyne receivers in a ideal hypothesis and the practical case respectively. 9. Finally, it points out that, as far as wide open receiver is concerned, to suppress or reduce the spurious response is one of the most important tasks in designing a superheterodyne receiver. 10. The system uses the emitter to send ultra high frequency signals after coding with signal coder and the secondary superheterodyne mixing receiver to accept the moving target signals. 11. Microstrip interdigital band-pass filters are compact and easy for batch manufacturing. They are suitable for applications in TVRO superheterodyne receivers as image-reject filters. 11. 12. According to the research and analysis of structure in several receivers, this paper brings forward a solution based on the superheterodyne receiver. 13. Aiming at request of private mobile radio, technology requirement of base station receiver based on TETRA protocol is analyzed, and two intermediate frequency superheterodyne structure is selected. 14. Both an RF power analyzer and a spectrum analyzer are essentially specialized superheterodyne receivers. 15. This paper first discusses the instinct disadvantage of a superheterodyne receiver, which is that it has more spurious response. |
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