Electromagnetic noise radiated from audio strains in smartphones, wearable units, and so forth interferes with the built-in antenna and might scale 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, in line with TDK.
The MAF0603GWY collection of noise suppression filters resolves this downside 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 gives excessive attenuation within the 5GHz band (impedance as much as 3220Ω at 5GHz), successfully suppressing noise. In contrast with standard 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 help that reconcile audio-quality preservation with electromagnetic-noise countermeasures for cell and wearable units with communication capabilities.
Fundamental purposes are in excessive‑frequency noise countermeasures for smartphones, tablets and wearable units: Bluetooth, Wi‑Fi (2.4GHz, 5GHz, 6GHz), 5G (Sub‑6), subsequent‑era 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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