In 2003-2004, two set
of 600-696GHz SIS heterodyne receiver for SMA band 1 are developed. The
receiver noise temperature, the noise contribution,and the receiver optics beam pattern are measured. the two receiver modules are installed into the receiver
chamber of SMA Antenna #7 and #8 located at 4089 meter-high
(Left) SMA receiver insert of the 600-696GHz band, and (Right) the Zitex G-108 film 4-layer IR blocking filter in front of the Teflon lens.
Detail configuration of the 600-696GHz local oscillator module with manual tuners.
Measured results of the receiver DSB noise temperature at different IF frequencies. The modules under test are receiver insert #1, optics Insert #2 and LO module #2001-008.
Measured results of (a),(b) amplitude pattern contours and (c),(d) phase pattern contours of SMA Antenna-7 and 8 for the 690 GHz SIS receivers with Martin-Puplett diplexers. The amplitude contours are in 3-dB step and phase contours are in 45-degree step. The ripples on the contour come from the residue reflections along the Gaussian beam.
Reference of this work:
 Y.-J. Hwang, M.-T. Chen, E. Chung, and T.-H.
 Y.J. Hwang, M.-J. Wang, Homin Jiang, S.-C.Shi, Qijun Yao, and M.-T. Chen, “Development of a 600-696GHz heterodyne receiver with fixed-tuned SIS mixer and Martin-Puplett LO/RF diplexer,” Proceedings of 17th Asia-Pacific Microwave Conference, vol. 1, pp.256-259, December 2005.
(latest modify: May 09, 2008)