Simulation of the electromagnetic performance of one of the waveguide components (known as hybrid) necessary to obtain sideband separation. The signal entering the hybrid by the upper right port is divided in signals having equal amplitude but 90° phase difference.
During the last years, the front end of the receiver of the MINI has been upgraded in several important ways. However, the receiver still maintains the double sideband (DSB) configuration. With the telescope being change to a new site with lower atmospheric transmission, a new more fundamental upgrading becomes more import namely using a sideband separating configuration. This upgrading is important due to the characteristic that 2SB receivers distinguish between the image and signal sidebands can be exploited in astronomy by providing enhanced atmospheric noise reduction when compared with DSB receiving techniques. To complement the front-end upgrading, we are constructing and integrating a digital correlator with IF hybridization capabilities.
© Millimeter-wave laboratory. Department of Astronomy (DAS) - University of Chile.
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