US 12,405,245 B2
Arrangement and method for providing a waveform for driving an ion mobility device
Osmo Anttalainen, Mikkeli (FI); Niku Oksala, Tampere (FI); Antti Roine, Tampere (FI); Anton Kontunen, Tampere (FI); and Mikko Koskenranta, Tampere (FI)
Assigned to OLFACTOMICS OY, Tampere (FI)
Appl. No. 17/793,559
Filed by OLFACTOMICS OY, Tampere (FI)
PCT Filed Jan. 18, 2021, PCT No. PCT/FI2021/050025
§ 371(c)(1), (2) Date Jul. 18, 2022,
PCT Pub. No. WO2021/148714, PCT Pub. Date Jul. 29, 2021.
Claims priority of provisional application 62/964,688, filed on Jan. 23, 2020.
Prior Publication US 2023/0070955 A1, Mar. 9, 2023
Int. Cl. G01N 27/62 (2021.01); G01N 27/624 (2021.01)
CPC G01N 27/624 (2013.01) 13 Claims
OG exemplary drawing
 
1. An arrangement for providing a waveform for driving an ion mobility device comprising at least a first electrode and second electrode, where the first and second electrodes are located parallel to each other such that a channel through which ions can pass is formed between the first and second electrodes, the arrangement comprising at least
a plurality of switching circuits, each switching circuit comprising at least two switches operatively coupled to a first voltage source (VH), wherein the plurality of switching circuits is arranged to be coupled in parallel with respect to each other, and
an interleaving circuit configured to receive a time-varying electrical input signal exhibiting an input frequency and based on said input signal, operate the plurality of switching circuits to provide a waveform via the switches, said waveform exhibiting a switching frequency that is equivalent to the input frequency, wherein the provided waveform is configured to be coupled to the first electrode of the ion mobility device, or wherein the provided waveform is configured to be coupled to a third electrode of the ion mobility device, which third electrode is disposed between the first and second electrodes of the ion mobility device.