memos

loco group memoranda:

#001 2010/10/01 Quantifying and Verifying trace stability of vector network analyzers at frequencies below 1GHz, Hamdi Mani, Chris Groppi, Judd Bowman
#002 2010/12/22 MWA Antenna Impedance Measurements, Hamdi Mani, Judd Bowman
#003 2010/12/30 MWA REVB LNA Measurements, Hamdi Mani, Judd Bowman
#004 2011/01/27 MWA DUAL LNA (REV2) Measurements, Hamdi Mani, Judd Bowman
#005 2011/05/13 EDGES Measurements, Hamdi Mani, Judd Bowman
#006 2011/05/25 MWA Antenna Measurements at the Murchison Radio Observatory, Hamdi Mani, Judd Bowman
#007 2011/05/24 Anritsu MS2035B VNA Stability Evaluation, Hamdi Mani, Judd Bowman
#008 2011/07/19 MWA Beamformer Measurements at ASU, Hamdi Mani, Judd Bowman
#009 2012/02/04 Charge Controller Communication using MatLab, Jose Chavez, additional files: Attachments.zip
#010 2012/02/08 EDGES Antenna Variation Report, Tom Mozdzen
#011 2012/02/09 EDGES Antenna Panel Thickness Variation Report, Tom Mozdzen
#012 2012/02/09 EDGES Antenna S11 Simulations with a Ground Cone Report, Tom Mozdzen
#013 2012/02/10 EDGES Antenna S11 Simulations with Conical Panels Report, Tom Mozdzen
#014 2012/07/26 Implementation of Antenna Simulator with improved-balance choke balun, Raul Monsalve
#015 2012/07/29 An Automated Test System to Characterize A Large number of MWA Beamformers, Hamdi Mani, Judd Bowman, Breana Branham, Jose Chavez
#016 2012/07/29 DARE MRO Expedition: Deployment and Initial Measurements, Hamdi Mani, Judd Bowman, Sarah Easterbrook
#017 2012/07/29 DARE MRO Data After Receiver Swap, Hamdi Mani
#018 2012/09/06 Remote Solar Power and Data Acquisition System (RSPDAS) Report, Jose Chavez
#019 2012/10/21 Hot Load for EDGES, Raul Monsalve
#020 2012/10/21 Stability of ZVL3 VNA in the Lab, Raul Monsalve
#021 2012/10/21 Stability of ZVA24 VNA in the Lab, Raul Monsalve
#022 2012/11/26 Field Notes at the MRO (EDGES/DARE)- Handwritten, Jose Chavez
#023 2012/12/17 MRO Field Report (2012 November), Jose Chavez, Hamdi Mani
#024 2013/01/28 Precision Noise Source Measurement REV1, Hamdi Mani
#025 2013/02/13 EDGES Spectrometer ADC card, Hamdi Mani
#026 2013/02/17 Solid State Noise Source Calibration Using cryogenically cooled Thermal Noise generators, Hamdi Mani
#027 2013/02/20 MATLAB Code used to remotely control the ZVL3 and ZVA24 Vector Network Analyzers via LAN to Automate measurements and log data, Hamdi Mani
#028 2013/02/20 MATLAB Code used to remotely control the ZVL3 Spectrum Analyzer via LAN to Automate measurements and log data, Hamdi Mani
#029 2013/02/22 Half Angle Sweep for Biconical Wire Skeleton Antenna, Jose Chavez
#030 2013/02/25 MATLAB Code and GUI used to Talk to the LABJACK U3, configure the IOs as digital Outputs, Hamdi Mani
#031 2013/02/25 Cryogenically Cooled 50 Ohm Terminations for Receiver Calibration, Hamdi Mani
#032 2013/02/25 MATLAB Code and GUI used to control the MWA beamformer, Hamdi Mani
#033 2013/02/28 Initial Measurement of the DARE engineering prototypeFront End unit (BALUN): Sparameters and Noise Temperature, Hamdi Mani
#034 2013/03/02 RFI in ISTB4 Lobby (prep for Night of Open Door), Jose Chavez, Hamdi Mani
#035 2013/03/07 DARE Balun with an external Noise Calibration source, Hamdi Mani
#036 2013/03/07 Short report on Design, Assembly and testing of a cheap and easy to build solid state noise source, Hamdi Mani
#037 2013/03/17 Comb Generator Stability Measurements, Jose Chavez
#038 2013/03/17 PAPER balun schematic, Raul Monsalve (R. Bradley)
#039 2013/03/27 Antenna Variable Parameter Sweep, Jose Chavez
#040 2013/03/28 Radio Spectrum Allocation in Chile, Raul Monsalve
#041 2013/04/07 bicoLOG 5070 Antenna Simulation, Jose Chavez
#042 2013/04/07 bicoLOG 5070 Antenna Calibration, Jose Chavez
#043 2013/04/16 Updated Antenna Results, Jose Chavez
#044 2014/06/26 Investigating MWA delay power spectra, Michael Busch

 

EDGES Reports:

#001 2013/05/02 Propagation of Instrumental Errors to the Sky Temperature Measurement, Raul Monsalve
#002 2013/05/14 First Measurement of Antenna using Mechanical Switch, Raul Monsalve
#003 2013/05/22 Measurement of Antenna using Air-dielectric Adapters and No Teflon in Tuner, Raul Monsalve
#004 2013/06/20 Quick Look at Changes in Antenna Reflection Coefficient When Applying Heat with Heat Guns, Raul Monsalve
#005 2013/07/11 Measurement of Antenna (Aluminum Base), Raul Monsalve
#006 2013/07/13 Revisiting the Calibration Method, Raul Monsalve
#007 2013/07/18 VNA Accuracy Test, Raul Monsalve
#008 2013/07/21 VNA Accuracy Test 2, Raul Monsalve
#009 2013/07/26 Heating and Cooling Test, Raul Monsalve
#010 2013/08/01 Sensitivity of Antenna to Different Perturbations, Raul Monsalve
#011 2013/08/01 VNA Accuracy Test 3, Raul Monsalve
#012 2013/08/07 Effect of Loss on VNA Calibration Standards, Raul Monsalve
#013 2013/08/11 New Antenna Measurements With and Without the Shield, Raul Monsalve
#014 2013/08/12 Cross-check of Short and Open Standards, Raul Monsalve
#015 2013/08/15 Antenna Measurements in a Softball Field, Raul Monsalve
#016 2013/08/22 Ground Plane Test in the Softball Field, Raul Monsalve
#017 2013/08/29 Effect of Error in Open and Short Standards on Measurement of Attenuator, Raul Monsalve
#018 2013/09/28 Using a Labjack U3 with Python on Linux, Raul Monsalve
#019 2013/10/02 Temperature Coefficients for DC Resistance of Match and Reference Attenuators, Raul Monsalve
#020 2013/10/03 Cross-Check Between Short Standards, Raul Monsalve
#021 2013/10/23 Correction of Reflection Coefficient of 10-dB Attenuator Measured with a FieldFox VNA, Raul Monsalve
#022 2013/10/23 Correction of Reflection Coefficient of 6-dB Attenuator Measured with a FieldFox VNA, Raul Monsalve
#023 2013/11/13 Status of the EDGES Antenna at the Site After Deployment of November 2013, Raul Monsalve
#024 2013/11/14 Quick Look at Antenna S11 Data Taken at Boolardy, Raul Monsalve
#025 2013/11/21 Linear Antenna Dependence on Temperature, Raul Monsalve
#026 2013/11/27 Performance of Antenna Measurement Setup, Raul Monsalve
#027 2014/01/13 EDGES-2 Base Plate Drawing, Raul Monsalve
#028 2013/07/15 Top Plate Heating Experiment, Tom Mozdzen
#029 2013/08/28 Impact of Polystyrene Box on Antenna, Tom Mozdzen
#030 2013/09/06 Effect of LNA Box on Antenna, Tom Mozdzen
#031 2013/09/12 Effect of LNA Box on Antenna – UPDATE, Tom Mozdzen
#032 2013/09/16 Performance of Different Top Plate Designs, Tom Mozdzen
#033 2013/11/20 Simulation of Antenna Panels with FEKO and CST, Tom Mozdzen
#034 2013/12/08 Study of FEKO Meshing for Antenna Panels, Tom Mozdzen
#035 2014/05/02 Toward an Accurate Calibration of EDGES Using Temperature References, Raul Monsalve
#036 2014/05/12 Toward an Accurate Calibration of EDGES Using Temperature References: II, Raul Monsalve
#037 2014/05/30 First Look at Good-Quality EDGES Data, Raul Monsalve
#038 2014/06/11 Correction of EDGES Data using CST Beam, Raul Monsalve
#039 2014/06/23 Comparison Between Global Sky Model and Haslam Map when Convolved with FEKO Beam, Raul Monsalve
#040 2014/06/30 Choosing a Test Network for the Forward-Reverse Method of VNA Standard Characterization, Raul Monsalve
#041 2014/07/07 Studying the Forward-Reverse Method Through Simulations, Raul Monsalve
#042 2014/07/13 Studying the Forward-Reverse Method Through Simulations: II, Raul Monsalve
#043 2014/08/18 Characterization of SPDT RF Switch, Raul Monsalve
#044 2014/10/30 Developments at ASU for the EDGES Deployment of October 2014, Raul Monsalve
#045 2014/11/05 S11 Measurements Before and During the EDGES Deployment of October 2014, Raul Monsalve
#046 2014/08/18 CST Simulation Results Using the New Top Cap Design, Tom Mozdzen
#047 2014/09/05 Finite Ground Screen Effects Upon Below Horizon Response, Tom Mozdzen
#048 2014/09/09 Finite Ground Screen Effects Upon Below Horizon Response – Supplemental Update, Tom Mozdzen
#049 2013/08/22 Farfield Vertical Gain Component at the Horizon with and without a Shield, Tom Mozdzen
#050 2014/02/27 Ground Pickup From a Seven Degree Horizon, Tom Mozdzen
#051 2014/11/08 Balun Side View Vertical Stackup, Tom Mozdzen
#052 2014/11/10 Antenna S11 Measured Between Nov 07 and 10, 2014, Raul Monsalve
#053 2014/11/11 Finite Length Horizontal Dipole over a Ground Plane: Simulated Beam vs Analytical Beam Study, Tom Mozdzen
#054 2014/11/11 Guidelines to Set CST Solver Accuracy, Tom Mozdzen
#055 2014/12/08 Testing the Temperature Controller on 2014/12/08, Raul Monsalve
#056 2014/12/08 EDGES – Temperature Control Circuit, Raul Monsalve
#057 2014/12/11 Testing the Temperature Controller on 2014/12/11, Raul Monsalve
#058 2015/02/12 Progress Toward a Full Uncertainty Propagation Machinery for EDGES, Raul Monsalve
#059 2015/02/19 Progress Toward a Full Uncertainty Propagation Machinery for EDGES: II, Raul Monsalve
#060 2015/03/05 Summary of Antenna S11 Measurements at MRO Starting on 2015/02/27, Raul Monsalve
#061 2015/03/11 Highband Blade Antenna CST Simulation Matrix 3x3x3x2 S11 Results, Tom Mozdzen
#062 2015/03/18 Highband Blade Antenna Update:Beam Patterns, Derivatives, and RMS Error Calculations Included, Tom Mozdzen
#063 2015/05/13 Antenna S11 Measurements at MRO, April/May 2015, Raul Monsalve
#064 2015/06/04 Comparison of Alternatives for Calibration of the High-Band Receiver 2015 at 25oC, Raul Monsalve
#065 2015/06/11 Reflection Coefficient Measurements of the EDGES High-Band Fourpoint Antenna Starting on 2015/06/06, Raul Monsalve
#066 2015/08/04 Reflection Coefficient Measurements of the EDGES High-Band BLADE Antenna Starting on 2015/07/31, Raul Monsalve
#067 2015/09/22 Reflection Coefficient Measurements of the EDGES High-Band BLADE Antenna Starting on 2015/09/19, Raul Monsalve
#068 2015/09/25 Stability of the Antenna Reflection Coefficient Measurements at the MRO, Raul Monsalve
#069 2015/09/26 Pictures of the Low-band Receiver Assembly, Raul Monsalve
#070 2015/12/10 Reflection Coefficient Measurements of the EDGES Low-Band BLADE Antenna Starting on 2015/12/08, Raul Monsalve
#071 2016/03/16 Estimates for the Sky Polarization Intensity at ~150 MHz averaged over Wide Solid Angles, Raul Monsalve
#072 2016/03/16 Spectral Index Estimation Using Fourpoint Antenna Data, Tom Mozdzen
#073 2016/03/16 Spectral Index Estimation Using Blade Highband and Lowband Antenna Data, Tom Mozdzen
#074 2016/07/20 Estimating the Accuracy of the Antenna S11 Measurements at the MRO, Raul Monsalve
#075 2016/04/20 Spectral Index Comparisons Between GSM and EDGES High-Band Measurements, Raul Monsalve
#076 2016/09/02 Measurements of Low- and High-band Antenna S11 at the MRO on August 30-31, 2016, Raul Monsalve
#077 2016/11/17 EDGES High-Band Average Spectrum (ongoing work), Raul Monsalve
#078 2016/11/23 Preliminary Rejection of Global 21-cm Models with EDGES High-Band (ongoing work), Raul Monsalve
#079 2016/12/13 Preliminary Rejection of Gaussian Models for the Global 21-cm with EDGES High-Band (ongoing work), Raul Monsalve
#080 2017/01/31 Rejection of Tanh Models for the Global 21-cm Signal from Simulated Data, Raul Monsalve
#081 2017/01/31 Comparison of beam models from all solvers for EDGES Highband, Nivedita Mahesh
#082 2017/02/01 Rejection of Tanh Models for the Global 21-cm Signal from Simulated Data: PART2, Raul Monsalve
#083 2017/02/07 Rejection of Tanh Models for the Global 21-cm Signal from Simulated Data: PART3 Sliding Window Approach, Raul Monsalve
#084 2017/02/16 Rejection of Tanh Models for the Global 21-cm Signal: PART 4, chi^2 Sliding Window Approach (ongoing work), Raul Monsalve
#085 2017/02/27 Estimation of the Reflection Magnitude Accuracy with the Agilent E5061A VNA at −30 dBm, Raul Monsalve, Nivedita, Mahesh, Thomas Mozdzen
#086 2017/03/05 Initial Calibration Results for Second EDGES Low-Band Receiver, Raul Monsalve, Nivedita, Mahesh, Thomas Mozdzen
#087 2017/03/05 Estimation of the Reflection Magnitude Accuracy with the Agilent E5061A VNA: Part 2, Raul Monsalve, Nivedita, Mahesh, Thomas Mozdzen
#088 2017/04/03 Re-calibration of the EDGES HighBand Receiver at 25C (Jan 2017), Tom Mozdzen, Nivedita Mahesh
#089 2017/04/19 Lowband-2 Calibration Summary 2016, Tom Mozdzen, Raul Monsalve, Nivedita Mahesh
#090 2017/05/11 Progress in the Rejection of Physical Global 21 cm Models, Raul Monsalve
#091 2017/05/27 S-parameters of the Front-end Network in the Low-Band 1 Receiver, Raul Monsalve
#092 2017/05/29 Nominal Calibration Data and Results for the Low Band 1 and 2 Receivers at 25degC, Raul Monsalve
#093 2017/06/14 21-cm Parameter Estimation using Markov Chain Monte Carlo, Raul Monsalve
#094 2017/06/15 Summary of Low-Band Residuals, Raul Monsalve
#095 2017/04/03 Investigation of changes in receiver S11 with back-end cable length, Nivedita Mahesh, Tom Mozdzen
#096 2017/06/24 Lowband 1 recalibration, Tom Mozdzen, Nivedita Mahesh
#097 2017/07/03 Measurements of thermal-dependence of 50-Ohm terminators, Leroy Johnson, Hamdi Mani, Judd Bowman
#098 2017/07/16 Obtaining a Cold IGM through Modification of the Residual Ionization Fraction Following Recombination, Judd Bowman
#099 2017/07/27 New Test Calibration of a Subset of Low-Band 1 Data, Raul Monsalve
#100 2017/08/14 Cross-check between Calibrations of Two Benchtop Keysight/Agilent VNAs, Raul Monsalve, Thomas Mozdzen, Leroy Johnson
#101 2017/08/01 Verification of 2015 and 2017 Parameters of the Low-Band 1 Front-End Network, Raul Monsalve, Thomas Mozdzen, Leroy Johnson
#102 2017/08/16 Comparison of Methods for Reflection Calibration at the Receiver Input, Raul Monsalve
#103 2017/08/16 Reflection Coefficient of Internal Calibration Standards, Raul Monsalve
#104 2017/08/16 Airline Measurements at the Input of the Low-Band 1 Receiver, Raul Monsalve