MIXER-PREAMP PERFORMANCE GRAPHS FOR THE SMT 1.3mm RECEIVER
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1 MIXER-PREAMP PERFORMANCE GRAPHS FOR THE SMT 1.3mm RECEIVER GENERAL INFORMATION The following graphs are the results in the performance of the sideband-separating mixer-preamps used in the 1.3mm receiver used at the SMT. These data were measured at NRAO in the evaluation of the mixerpreamp. They are presented here to provide a general guide for the observer as to what they might expect in regards to receiver noise temperature and image rejection for a particular LO frequency tuning. The receiver noise temperature data presented here do not accurately reflect the receiver noise temperature at the telescope, but do give a qualitative description of the receiver temperature as a function of IF. The discrepancy arises from the differences in the optics between the telescope and the test system used at NRAO. However, the image rejection data should be reasonably accurate. Each graph shows the uncorrected and corrected receiver noise temperature, image rejection, and gain for a particular LO frequency tuning. Uncorrected and corrected receiver noise temperatures take into account the effect of the image rejection; the lower the image rejection, the higher the corrected receiver temperature. For high levels of image rejection, both the corrected and uncorrected receiver noise temperatures agree with each other. The most useful information on the graphs though is most likely the IR data so the observer can get an idea what to expect at their observing frequency at a particular IF and LO tuning. These graphs may change from time to time. Currently, mixer block /63 is being used for the horizontal polarization and mixer block /45 is being use for the vertical polarization. Please note: The curves for block /45 should be flipped. This means the USB data shown on the graphs is really the LSB data on the telescope. We apologize for this added confusion, but we had to flip the sidebands on the vertical polarization mixer so that the performance would be consistent with the horizontal polarization mixer which has better LSB performance. H pol: mixer block /63 V pol: mixer block /45 Eugene Lauria, 11/16/07
2 Mixer Block 117 LO = 221 GHz Test date Gain Sheet: RF Page: 1 of 12 Printed: :26:22
3 Mixer Block 117 LO = 225 GHz Test date Gain Sheet: RF Page: 2 of 12 Printed: :26:23
4 Mixer Block 117 LO = 229 GHz Test date Gain Sheet: RF Page: 3 of 12 Printed: :26:23
5 Mixer Block 117 LO = 233 GHz Test date Gain Sheet: RF Page: 4 of 12 Printed: :26:24
6 Mixer Block 117 LO = 237 GHz Test date Gain Sheet: RF Page: 5 of 12 Printed: :26:25
7 Mixer Block 117 LO = 241 GHz Test date Gain Sheet: RF Page: 6 of 12 Printed: :26:26
8 Mixer Block 117 LO = 245 GHz Test date Gain Sheet: RF Page: 7 of 12 Printed: :26:27
9 Mixer Block 117 LO = 249 GHz Test date Gain Sheet: RF Page: 8 of 12 Printed: :26:28
10 Mixer Block 117 LO = 253 GHz Test date Gain Sheet: RF Page: 9 of 12 Printed: :26:28
11 Mixer Block 117 LO = 257 GHz Test date Gain Sheet: RF Page: 10 of 12 Printed: :26:29
12 Mixer Block 117 LO = 261 GHz Test date Gain Sheet: RF Page: 11 of 12 Printed: :26:30
13 Mixer Block 117 LO = 265 GHz Test date Gain Sheet: RF Page: 12 of 12 Printed: :26:31
14 Mixer Block 114 LO = 220 GHz UVA-N L KF-C12-L56-2 & Amp #038 (Mixer 1) UVA-N L KF-C12-L56-3 & Amp #045 (Mixer 2) Test Date Gain Sheet: RF Page: 1 of 7 SIS Mixer IV Plotter Ver. V4.39 ( ) Printed: :02:26 File: \\cvfiler\cv-cdl-sis\mxrtstsys\data\blk114\blk114test3\blk114amps _graphs3.xls
15 Mixer Block 114 LO = 223 GHz UVA-N L KF-C12-L56-2 & Amp #038 (Mixer 1) UVA-N L KF-C12-L56-3 & Amp #045 (Mixer 2) Test Date Gain Sheet: RF Page: 2 of 7 SIS Mixer IV Plotter Ver. V4.39 ( ) Printed: :58:38 File: \\cvfiler\cv-cdl-sis\mxrtstsys\data\blk114\blk114test3\blk114amps _graphs3.xls
16 Mixer Block 114 LO = 233 GHz UVA-N L KF-C12-L56-2 & Amp #038 (Mixer 1) UVA-N L KF-C12-L56-3 & Amp #045 (Mixer 2) Test Date Gain Sheet: RF Page: 3 of 7 SIS Mixer IV Plotter Ver. V4.39 ( ) Printed: :29:23 File: \\cvfiler\cv-cdl-sis\mxrtstsys\data\blk114\blk114test3\blk114amps _graphs3.xls
17 Mixer Block 114 LO = 243 GHz UVA-N L KF-C12-L56-2 & Amp #038 (Mixer 1) UVA-N L KF-C12-L56-3 & Amp #045 (Mixer 2) Test Date Gain Sheet: RF Page: 4 of 7 SIS Mixer IV Plotter Ver. V4.39 ( ) Printed: :22:50 File: \\cvfiler\cv-cdl-sis\mxrtstsys\data\blk114\blk114test3\blk114amps _graphs3.xls
18 Mixer Block 114 LO = 253 GHz UVA-N L KF-C12-L56-2 & Amp #038 (Mixer 1) UVA-N L KF-C12-L56-3 & Amp #045 (Mixer 2) Test Date Gain Sheet: RF Page: 5 of 7 SIS Mixer IV Plotter Ver. V4.39 ( ) Printed: :31:20 File: \\cvfiler\cv-cdl-sis\mxrtstsys\data\blk114\blk114test3\blk114amps _graphs3.xls
19 Mixer Block 114 LO = 263 GHz UVA-N L KF-C12-L56-2 & Amp #038 (Mixer 1) UVA-N L KF-C12-L56-3 & Amp #045 (Mixer 2) Test Date Gain Sheet: RF Page: 6 of 7 SIS Mixer IV Plotter Ver. V4.39 ( ) Printed: :01:44 File: \\cvfiler\cv-cdl-sis\mxrtstsys\data\blk114\blk114test3\blk114amps _graphs3.xls
20 Mixer Block 114 LO = 270 GHz UVA-N L KF-C12-L56-2 & Amp #038 (Mixer 1) UVA-N L KF-C12-L56-3 & Amp #045 (Mixer 2) Test Date Gain Sheet: RF Page: 7 of 7 SIS Mixer IV Plotter Ver. V4.39 ( ) Printed: :13:39 File: \\cvfiler\cv-cdl-sis\mxrtstsys\data\blk114\blk114test3\blk114amps _graphs3.xls
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= +25 C, IF = 2350 MHz, LO = +4 dbm, VDLO1, 2 = +3V, IDLO = 150 ma, VDRF = +3V, IDRF = 200mA, USB [1][2] Parameter Min. Typ. Max.
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