ST’s STHVDAC-253C7 digital controller for tunable capacitors claims to shrink the size, BoM, and power consumption of antenna-tuning circuits for stabilizing smartphone RF performance. Using the STHVDAC-253C7 with ST’s STPTIC capacitors for impedance matching and frequency tuning is claimed to almost eliminate the effects of environmental variations, resulting in stronger signal reception, fewer dropped calls, ...
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from Electronics Weekly https://www.electronicsweekly.com/uncategorised/547799-2019-01/
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