Sideband characterization and atmospheric observations with various 340 GHz heterodyne receivers

Renker, Matthias; Murk, Axel; Rea, Simon P.; Emrich, Anders; Frisk, Urban (2014). Sideband characterization and atmospheric observations with various 340 GHz heterodyne receivers. Review of scientific instruments, 85(8), 084706. American Institute of Physics 10.1063/1.4892806

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This paper describes sideband response measurements and atmospheric observations with a double sideband and two Single Sideband (SSB) receiver prototypes developed for the multi-beam limb sounder instrument stratosphere-troposphere exchange and climate monitor radiometer. We first show an advanced Fourier-Transform Spectroscopy (FTS) method for sideband response and spurious signal characterization. We then present sideband response measurements of the different prototype receivers and we compare the results of the SSB receivers with sideband measurements by injecting a continuous wave signal into the upper and lower sidebands. The receivers were integrated into a total-power radiometer and atmospheric observations were carried out. The observed spectra were compared to forward model spectra to conclude on the sideband characteristics of the different receivers. The two sideband characterization methods show a high degree of agreement for both SSB receivers with various local oscillator settings. The measured sideband response was used to correct the forward model simulations. This improves the agreement with the atmospheric observations and explains spectral features caused by an unbalanced sideband response. The FTS method also allows to quantify the influence of spurious harmonic responses of the receiver.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics

UniBE Contributor:

Renker, Matthias and Murk, Axel

Subjects:

600 Technology > 620 Engineering

ISSN:

0034-6748

Publisher:

American Institute of Physics

Language:

English

Submitter:

Martin Frenz-Lips

Date Deposited:

04 Feb 2015 13:31

Last Modified:

26 Jun 2016 01:57

Publisher DOI:

10.1063/1.4892806

BORIS DOI:

10.7892/boris.62392

URI:

https://boris.unibe.ch/id/eprint/62392

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