TDK has developed a new multilayer diplexer in case size IEC 1005 for the implementation of 2,4 GHz/5 GHz band WLAN in smartphones and other mobile devices. With its miniature dimensions of 1,0 x 0,5 x 0,4 mm, the DPX105950DT-6010B1 is more than 60% smaller than existing 1608 diplexers.
In spite of the significant size reduction, the new diplexer provides equal or even better insertion loss and attenuation performance. For example, the maximum low band insertion loss at 2,4 to 2,5 GHz is just 0,5 dB, while the high band attenuation in the same frequency range is at least 25 dB.
Diplexers are electronic components used in the antenna input/output section to divide or combine two different frequency bands. The new product features a combination of layers with different dielectric constants, which are produced using TDK’s co-firing technology. TDK was able to further miniaturise its diplexer by using even thinner ceramic layers and finer conductor lines. The product is rated for an operating temperature of -40°C to +85°C and is suitable for use in the Bluetooth and WLAN circuitry in mobile devices.
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