Building Dump: Debugging Issues with Antenna model simulation: Graphs to get (compared to Curved_Sides Antenna Run): - Gain Plots - Look at frequencies where dips. Could be due to: dielectric loss, mismatched impedance or structural changes - Impedance Over Frequency Plots - Want impedance to be around 50 Ohm for resistive components and 0 for reactance at operational frequencies - S11 Plots (Return Loss VS Frequency) - Look for where the S11 dips to determine where the antenna is resonant - Total Efficiency Vs Frequencies - Drops at certain frequencies indicates problems! - VSWR vs Frequency - Lower VSWR means better matching in 03_13_2025_manual.xf: Run1 = wrong material defs (deleted) Run2 = glitched it Run3 = wrong material def again slightly changed tho Run4 = wrong material, with conductor gone Run5 = wrong material, with full wire gone Run6 = right material, full wire gone Run7 = right material, conductor gone Run8 = right material, everything there feed shifted to side Run9 = right material, feed in middle of conductor Run10 = right material, wire gone feed offset reduced (putting closer to center). this failed because the top of the feed was disconnected Run11 = right material, feed with correct max feed offset allowed, coax gone Run12 = trying the same thing but with the coax gone with building the feed Run13 = with coax cable back, feed shifted closer to middle (apparently forgot to save and it's just the same thing.. as run12) Run14 = adding pads and putting feed in the middle of the antenna, leave dielectric and jacket turned on Run16 = pads, feed in middle, removing dielectric and jacket (-300 thing again.. not sure why) Run17 = same thing but ABS material changed and adjusted pucks a little Run18 = same ABS material change but with only inner conductor removed (I am testing why I am getting -300..) Run19 = removed supports, still with pucks + only inner conductor removed Run20 = removing pucks, with conductor removed and new ABS material (no more -300 but very low again...) run21 = removed pucks, conductors(PLURAL) with new ABS Material run23 = back to just supports, offset feed new ABS Material run24 = coax gone, og ABS material, with the offset feed closer to the middle run25 = everything back to normal coax gone (something wrong) run26 = trying to fix the issue I'm seeing (FIXED) you have to uncheck that materials are included in meshing :/ run27 = actually removing the outer and inner conductors (yields worse gains!) run28 = moving to feed center w/ copper plates and with the jacket + dielectric Seems like the wire in the middle should be plastic (or non-conducting)? based off document wangjie sent me "If we 3D print the metal, Chi-Chih thought that we could keep them together through a plasic rod running through the middle" (It's not!) maybe not, named LMR600 in solidworks which have the following material properties: https://www.awcwire.com/lmr-cable/lmr-75-ohm-cable/lmr-600-75 screws connecting halves needed to be plastic all other screws needed to be non-magnetic stainless steel everything else is copper (?) Trying to change materials of the wire and supports (03_13_2025_building_sim_2.xf): still bad Trying again with same materials and putting feed down center of coax cable(03_13_2025_building_sim_3.xf): everything is -300 dBi :( removing the copper middle part (03_13_2025_building_sim_4.xf): still bad manually adding materials into XFdtd (03_13_2025_manual.xf): still bad, but different bad actually numbers-wise worse - Passivated 18-8 Stainless Steel - PEEK Plastic - Dielectric: Foam Polyethylene (FPE) - Inner Conductor: Solid Bare Copper Covered Aluminum - Outer Conductor: Aluminum Tape - Outer Braid: Tinned Copper - Jacket: Polyethylene - ABS Plastic - Copper foil I believe the feed replaces the coax cable in the middle so I am removing the inner conductor and assuming that it will be the same as the feed. Dimensions of Curved Antenna (model based off this): (in cm for relevant parts) - r1 = 3.20675 - height1 = 39.3683 - a1 = -0.0123505 - b1 = 0.418171 - r2 = 3.6116 - height2 = 18.605 - a2 = -0.0233028 - b2 = 0.369081 - Total height = 60.9733 Dimensions of Model in XF: (ignoring a's and b's as that's harder to measure..) (again in cm) (rough measurements in XF) - r1 = 3.7 - h1 = 33.7441 - r2 = 3.4 - h2 = 18.71 - total height = 55.45 (no cable) 60.6459 (including cable) Reference run XF settings: - Removed the wire in the middle that was connecting the two sides: no difference (need to redo with it actually deleted + having the top plates copper) (03_11_2025_building_sim_1.xf) - Removed middle wire AGAIN (03_13_2025_building_sim_0.xf): no difference, same issue - Removed Supports and simulated(03_12_2025_building_sim_0.xf): This seems to have fixed the issue I'm seeing, so either the supports or the wire are shorting the antenna (or both!) - Removed Supports ONLY(03_13_2025_building_sim_1.xf): still happening, though less extreme For Initial Building Run: Generation 13, individual 84 seems to be result being used (this assumption is based on the fact that when trying to straighten the sides for building they used this individual) /fs/ess/PAS1960/BiconeEvolutionOSC/BiconeEvolution/current_antenna_evo_build/XF_Loop/Evolutionary_Loop/Run_Outputs/2022_12_29 Elog Links for first building runs: - Run Details: https://radiorm.physics.ohio-state.edu/elog/GENETIS/188 - Run Results + Gain Patterns: https://radiorm.physics.ohio-state.edu/elog/GENETIS/189 - Matching Circuit PCB: https://radiorm.physics.ohio-state.edu/elog/GENETIS/193 - Matching Circuit Parts: https://radiorm.physics.ohio-state.edu/elog/GENETIS/191 - Matching Circuit Schematic: https://radiorm.physics.ohio-state.edu/elog/GENETIS/230 - Matching Circuit Initial Design: https://radiorm.physics.ohio-state.edu/elog/GENETIS/183 - PoR Plots 1: https://radiorm.physics.ohio-state.edu/elog/GENETIS/194 - PoR Plots 2: https://radiorm.physics.ohio-state.edu/elog/GENETIS/196 - Straightened Sides 1: https://radiorm.physics.ohio-state.edu/elog/GENETIS/229 - Straightened Sides 2: https://radiorm.physics.ohio-state.edu/elog/GENETIS/236 At some point, another run seems to have been created for building with the crazy sides run here with REALIZED GAIN: /fs/ess/PAS1960/BiconeEvolutionOSC/BiconeEvolution/current_antenna_evo_build/XF_Loop/Evolutionary_Loop/Run_Outputs/2023_09_05_realized_curved_run - Run is using the same freq of interest as what we currently use!! Top 5 vEffective Scores of Realized Gain run: Value: 5.09897, Generation: 41, Individual: 44 (Seems to be this one, modified) Value: 5.07746, Generation: 37, Individual: 16 Value: 5.05508, Generation: 37, Individual: 5 Value: 5.04558, Generation: 38, Individual: 12 Value: 5.04026, Generation: 48, Individual: 5 GENETIS Useful Links: - GENETIS Google Drive: https://drive.google.com/drive/folders/1iDamk46R2_oOLHtvsOg4jNy05mCiB7Sn?dmr=1&ec=wgc-drive-hero-goto - Onboarding Materials: https://radiorm.physics.ohio-state.edu/elog/GENETIS/41 - Julie's Dissertation: https://radiorm.physics.ohio-state.edu/elog/Write-Ups/220404_161525/Julie_Rolla_Dissertation.pdf - Julie's Candidacy: https://as-phy-radiorm.asc.ohio-state.edu/elog/Write-Ups/44 - ICRC Proceedings: https://arxiv.org/pdf/2112.00197 - Phys Rev D Paper: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.108.102002 - ARA Loop GitHub: https://github.com/osu-particle-astrophysics/GENETIS-ARA - PUEO Loop GitHub: https://github.com/osu-particle-astrophysics/GENETIS_PUEO - Shared Code GitHub: https://github.com/osu-particle-astrophysics/Shared-Code - AraSim GitHub: https://github.com/ara-software/AraSim/tree/master - pueoSim GitHub: https://github.com/PUEOCollaboration/pueoSim