Electromagnetic noise radiated from audio traces in smartphones, wearable units, and so on interferes with the built-in antenna and might cut back the receiver sensitivity. The frequent countermeasure is chip beads. Whereas efficient at suppressing noise, they’ll degrade the audio high quality on the audio line, based on TDK.
The MAF0603GWY sequence of noise suppression filters resolves this disadvantage by using a proprietary low-distortion ferrite materials. It introduces simply minimal change to audio-line traits and considerably reduces audio distortion, eliminating the sound-quality degradation that happens when chip beads are used, claimed TDK. It supplies excessive attenuation within the 5GHz band (impedance as much as 3220Ω at 5GHz), successfully suppressing noise. In contrast with typical merchandise, it additionally options decrease resistance to cut back attenuation of audio indicators and realises a large dynamic vary.
TDK will proceed to supply a broad line-up of noise suppression filters and technical assist that reconcile audio-quality preservation with electromagnetic-noise countermeasures for cellular and wearable units with communication features.
Major purposes are in excessive‑frequency noise countermeasures for smartphones, tablets and wearable units: Bluetooth, Wi‑Fi (2.4GHz, 5GHz, 6GHz), 5G (Sub‑6), subsequent‑technology communication requirements (6G).
| Kind | Impedance (typ) [Ω]@ 900MHz |
Impedance (typ) [Ω]@ 5GHz |
DC resistance (typ) [Ω] |
DC resistance (max.) [Ω] |
Rated present (max.) [A] |
| MAF0603GWY211AT000 | 210 | 1370 | 0.89 | 1.30 | 0.15 |
| MAF0603GWY301AT000 | 300 | 1890 | 1.15 | 1.50 | 0.14 |
| MAF0603GWY551AT000 | 550 | 3220 | 1.81 | 2.20 | 0.125 |
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