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The atmospheric attenuation of THz wave propagation is closely related to the weather condition, region height and meteorological parameter. The quantitative calculation of THz wave atmospheric absorption attenuation under slant path, especially long term statistical at actually region, are always been fundamental and key technology for variety terahertz communication modes application. However, up...
Terahertz (THz) wave is 0.1 to 10THz electromagnetic wave, which has the advantages of wide frequency band and low energy. In the field of space exploration, THz has important application prospects. Up to now, the atmospheric absorption attenuation model of THz wave is mostly horizontal transmission attenuation model. However, most aircraft ground detection is under slant path, not horizontal. Based...
The atmospheric attenuation of THz wave is closely related to the weather condition, region height and meteorological parameter. In this paper, the discrete data from China Meteorological Data Sharing Service System is employed and then different fitting functions are suggested to fit these discrete data of heights, air pressure, temperature and dew points. Take Wuhan (114.2°E, 30.86°N) for example,...
The atmospheric attenuation of THz wave is closely related to the meteorological parameters, such as temperature, barometric pressure, relative humidity, etc. In this paper, the data from China Meteorological Data Sharing Service System is employing to calculate the atmospheric attenuation of THz wave based on MPM (Millimeter Propagation Model), according to ITU-R Rec. P. 676-8. An optimal fitting...
The study on the properties of terahertz (THz) wave propagation in complex atmosphere always been key technology for variety terahertz communication modes, such as wideband & high-speed network, astro-satellite communication, altitude aero-craft communication, long distance vast data transfer, short range wireless security communication etc. There are four main factors make effects on the free...
The terahertz (THz) region of the electromagnetic spectrum, spanning from 100 GHz through 10 THz, become more and more import for a wide range scientific, military and commercial applications day by day. This paper presents a design of novel waveguide to suspended microstrip probe transition at terahertz atmospheric window 220GHz using sector step impedance matching circuit by Advanced Design System...
This paper presents a new improved compact, low-insertion loss, sharp-rejection, and easy to manufacture compact microstrip resonant cell (CMRC) structure [1] as microstrip or suspended-substrate microstrip lowpass filter (LPF) used in terahertz (THz) Subharmonically pumped mixer (SHM). In comparison to traditional high/low step-impedance filter used in SHM, this improved CMRC structure could shorten...
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