This week's new product recommendations: ADI's miniaturized digitally tunable filters and Molex's Wi-Fi and Bluetooth external antennas.

Digitally tunable filters can serve as a smaller and more compact alternative to large switched filter banks and cavity-tuned filters, providing a solution with dynamically adjustable operating frequency in advanced communication applications such as aerospace and defense.

ADI 's ADMV8818 is a fully monolithic microwave integrated circuit (MMIC) with four independently controlled high-pass filters (HPFs) and four independently controlled low-pass filters (LPFs) operating in the 2 GHz to 18 GHz frequency range. It can be programmed using a 4-wire serial port interface (SPI).

The controller for each filter in the ADMV8818 is 4 bits wide, providing 16 states to adjust its 3dB cutoff frequency, resulting in a bandwidth of up to 4GHz. The device's use of digitally switched capacitors provides improved filter linearity and frequency response compared to other varactor-based solutions. Its typical insertion loss is 3dB, and its wideband rejection is 3dB, minimizing system harmonics.

To learn more about ADI's ADMV8818 digitally tunable filter, watch the following video:

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