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4 layers98 × 98 mmAds b, the printed circuit board in 3D

Simulaciones electromagnéticas Full-Wave (Sonnet EM) y diseño final de antena patch ADS-B 1090 MHz RHCP — Proyecto CubeSat BEAM (UNLaM)

Size
98 × 98 mm
Copper layers
4
Thickness
1.6 mm
Parts
53
Nets
70
Pads
203
Tracks, vias
70, 88
Pours
5
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
28 Oct 2026
Updated
28 Oct 2026

Overview

Ads b is an open-source printed circuit board by beam-ttm, from the beam-ttm/simulaciones repository on GitHub. It is a 4-layer board of 98 × 98 mm with 53 parts on 70 nets, routed with 70 tracks and 88 vias.

It is built around the BLB01, LC76G and CC0402JRNPO9BN101, with the CC0402JRNPO9BN120, CC0402KRX7R7BB104 and LQW15AN27NJ00D among its other parts. Its parts include 23 capacitors, 4 ICs, 4 inductors, 3 resistors and 2 connectors.

Main components

10

README

README.md

Simulaciones Electromagnéticas — Proyecto CubeSat BEAM (UNLaM)

Repositorio oficial de simulaciones electromagnéticas Full-Wave MoM (Sonnet Software 19.54) y codiseño RF/PCB para el subsistema ADS-B (1090.0 MHz, polarización circular derecha RHCP) del CubeSat BEAM (Universidad Nacional de La Matanza).

Poster General Stand ADS-B 1090 MHz RHCP


Estructura del Repositorio

  • diseno_final_patch_1090/: Diseño final validado (Sonnet + KiCad + Imágenes para Stand)
    • diseno_final_patch_1090/sonnet/: Proyecto final de Sonnet (patch_completa_jp3_gcpw_CP_1090.sonx), parámetros Touchstone de 181 puntos (1.000 – 1.180 GHz, paso 1 MHz), corrientes superficiales MoM (sondata/.../jxy/current_1.sid), verificación de 2 puertos de la transición coplanar-vía (transicion_jp3_gcpw_via_50ohm.sonx) y plantillas gráficas (.sgrx, .sptx).
    • diseno_final_patch_1090/kicad/: Proyecto de KiCad (ads-b.kicad_pcb, ads-b.kicad_pro, ads-b.kicad_sch, skillkicad.md) sincronizado 1:1 con el modelo electromagnético de Sonnet y verificado con 0 errores DRC de cobre/bordes.
    • diseno_final_patch_1090/imagenes_stand/: Infografías en alta resolución (300 DPI / 4K), diagramas de corriente superficial MoM, patrones de radiación 3D/Polar/2D y renders 3D raytraced listos para exhibición en stand.
  • sonnet/adsb_patch/: Historial de barridos paramétricos, scripts de automatización, síntesis del stackup JLC04161H-2116 y estudios comparativos previos.

Resumen de Resultados del Diseño Final (1090.0 MHz)

ParámetroValor Simulado (Full-Wave MoM)Especificación / Objetivo
Frecuencia central de operación1090.0 MHz (mínimo en 1087.0 MHz)1090.0 MHz (ADS-B Mode-S)
**Pérdida de retorno $S_{11}$ desde JP3**
Impedancia de entrada $Z_{\text{in, JP3}}$46.5 + j2.5 Ω @ 1090 MHz (49.0 + j2.1 Ω @ 1087 MHz)$50\ \Omega$
Ancho de banda a -10 dB ($ ext{VSWR} < 2:1$)34.0 MHz (1074.0 – 1108.0 MHz)$\ge 20 ext{ MHz}$
Ganancia Circular Derecha (RHCP, E-RHP)+9.66 dBiC ($\theta = 0^\circ$)$> +6.0 ext{ dBiC}$
Rechazo Cross-Polar (LHCP, E-LHP)-5.95 dBiC (15.61 dB de aislamiento RHCP/LHCP)$> 15 ext{ dB}$
Relación Axial (Axial Ratio, AR)2.90 dB ($\theta = 0^\circ$)$\le 3.0 ext{ dB}$ (Polarización Circular)
Ancho de haz de media potencia (HPBW a -3 dB)97.3° × 101.5° (~99.4° promedio)Cobertura hemisférica ancha LEO
Pérdida de inserción transición JP3 -> GCPW -> Vía**`S21

Galería Visual para Stand

1. Excitación de Modos en Cuadratura RHCP y Patrón Cartesiano 2D

Corrientes Superficiales MoM y Ganancia RHCP

2. Modelo 3D Raytraced de la Placa CubeSat PC/104 (F.Cu Parche RHCP + B.Cu Front-End RF)

Modelo 3D Dual KiCad + Sonnet

Parts

53
QtyValueFootprintReferences
4, , ,
4100NFCapacitor_SMD:C_0603_1608MetricC5, C11, C19, C22
4100pFCapacitor_SMD:C_0402_1005MetricC8, C10, C12, C14
410UFCapacitor_SMD:C_0603_1608MetricC2, C6, C18, C21
412pFCapacitor_SMD:C_0402_1005MetricC7, C9, C13, C15
433PFCapacitor_SMD:C_0603_1608MetricC16, C17, C20, C23
4Keystone PadTestPoint:TestPoint_Pad_1.0x1.0mmTJ2, TJ3, TJ4, TJ5
20.1uFCapacitor_SMD:C_0402_1005MetricC3, C4
227nHInductor_SMD:L_0402_1005MetricL2, L4
26.8kResistor_SMD:R_0402_1005MetricR5, R6
282nHInductor_SMD:L_0402_1005MetricL3, L5
2BLB01adsbee:Berex_DFN-8-1EP_2x2mm_P0.5mm_SmallPadWithDotsU3, U4
2Jumper_3_Bridged12adsbee:Jumper_C_0402_3Pole_Bridged12_3DownJP2, JP3
110kResistor_SMD:R_0402_1005MetricR31
12.2uFCapacitor_SMD:C_0603_1608MetricC1
13.3VWM 0.6pFDiode_SMD:D_SOD-523D1
1ADSBee m1090adsbee:PantsForBirds_ADSBee_m1090_ModuleU2
1AO3401APackage_TO_SOT_SMD:SOT-23Q1
1Conn_01x05_PinConnector_JST:JST_SH_SM05B-SRSS-TB_1x05-1MP_P1.00mm_HorizontalJ1
1LC76GLC76G:XCVR_LC76GU1
1Logo-unlamadsbee:UNLaM_Logo_45mmGRAPHIC4
1Logo_ADSBeeadsbee:ADSBeelogoGRAPHIC2
1Logo_BEAMadsbee:BEAM_logo_22.4mmGRAPHIC3
1RF UFConnector_Coaxial:U.FL_Hirose_U.FL-R-SMT-1_VerticalJ2
1SAW-6 Filteradsbee:Filter_SAW-6_3.0x3.0mmX2

The 52 most common of 53 parts.

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Questions

How big is the Ads b PCB?

It measures 98 × 98 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Ads b use?

53 parts, built around the BLB01, LC76G, CC0402JRNPO9BN101 and CC0402JRNPO9BN120. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Ads b KiCad files?

From the beam-ttm/simulaciones repository on GitHub, at the commit this page was made from: the board is sonnet/adsb_patch/source/ads-b.kicad_pcb and its schematic diseno_final_patch_1090/kicad/ads-b.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Ads b design in my own project?

Its repository states no licence, so its author keeps all rights: ask beam-ttm before reusing the design.