Frequency Mixer Based on Doppler Effect

2018 ◽  
Vol 28 (1) ◽  
pp. 43-45 ◽  
Author(s):  
Jia Ran ◽  
Yewen Zhang ◽  
Xiaodong Chen ◽  
Hong Chen
Keyword(s):  
Doppler Effect ◽  
Frequency Mixer

Some notes on the relativistic Doppler effect

1998 ◽  
Vol 168 (9) ◽  
pp. 1037 ◽  
Author(s):  
Yu.I. Hovsepyan
Keyword(s):  
Doppler Effect

Planar MOCVD GaAlAs/GaAs high-frequency mixer diodes

1985 ◽  
Vol 21 (7) ◽  
pp. 305
Author(s):  
A. Christou ◽  
M.C. Peckerar
Keyword(s):  
High Frequency ◽  
Frequency Mixer

scholarly journals Line-of-Sight Winds and Doppler Effect Smearing in ACE-FTS Solar Occultation Measurements

Atmosphere ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 680
Author(s):  
Chris D. Boone ◽  
Johnathan Steffen ◽  
Jeff Crouse ◽  
Peter F. Bernath
Keyword(s):  
Atmospheric Chemistry ◽  
Doppler Effect ◽  
Line Of Sight ◽  
Measured Signal ◽  
Mixing Ratio ◽  
Model Calculations ◽  
Doppler Shifts ◽  
Solar Occultation ◽  
Wide Range ◽  
Wind Profiles

Line-of-sight wind profiles are derived from Doppler shifts in infrared solar occultation measurements from the Atmospheric Chemistry Experiment Fourier transform spectrometers (ACE-FTS), the primary instrument on SCISAT, a satellite-based mission for monitoring the Earth’s atmosphere. Comparisons suggest a possible eastward bias from 20 m/s to 30 m/s in ACE-FTS results above 80 km relative to some datasets but no persistent bias relative to other datasets. For instruments operating in a limb geometry, looking through a wide range of altitudes, smearing of the Doppler effect along the line of sight can impact the measured signal, particularly for saturated absorption lines. Implications of Doppler effect smearing are investigated for forward model calculations and volume mixing ratio retrievals. Effects are generally small enough to be safely ignored, except for molecules having a large overhang in their volume mixing ratio profile, such as carbon monoxide.

Nonreciprocal optical bistability based on Doppler effect in a three-level atomic system

2021 ◽  
Vol 488 ◽  
pp. 126862
Author(s):  
Wenjia Shi ◽  
Hongjun Zhang ◽  
Hui Sun ◽  
Peng Wang
Keyword(s):  
Doppler Effect ◽  
Optical Bistability ◽  
Atomic System

scholarly journals Research Progress and Development Trends of Acoustic Metamaterials

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4018
Author(s):  
Hao Song ◽  
Xiaodong Ding ◽  
Zixian Cui ◽  
Haohao Hu
Keyword(s):  
Doppler Effect ◽  
Negative Refraction ◽  
Development Trend ◽  
Atomic Clusters ◽  
Research Progress ◽  
Acoustic Metamaterials ◽  
Development Trends ◽  
Related Research ◽  
The Past ◽  
Anomalous Doppler Effect

Acoustic metamaterials are materials with artificially designed structures, which have characteristics that surpass the behavior of natural materials, such as negative refraction, anomalous Doppler effect, plane focusing, etc. This article mainly introduces and summarizes the related research progress of acoustic metamaterials in the past two decades, focusing on meta-atomic acoustic metamaterials, metamolecular acoustic metamaterials, meta-atomic clusters and metamolecule cluster acoustic metamaterials. Finally, the research overview and development trend of acoustic metasurfaces are briefly introduced.

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