HTOOL STB R1/R2: passive analog signal integrity test boards for high-frequency hardware design and SI simulation.
On May 7, 2026, HTOOL launched STB R1 (basic) and STB R2 (advanced) signal integrity test boards. Pure passive analog structure for high-frequency hardware design, RF testing, SI simulation, and university labs.
R1: on-board calibration, standard single-ended stripline, branch lines of varying lengths, serpentine traces (crosstalk/coupling/delay), planar antenna structure. No digital circuits, no chips, no algorithms.
R2: differential pair structure, layer-transition stripline (via/reference layer impedance discontinuity), distributed bandpass filter. All passive analog.
