New product recommendations of the week: ADI miniaturized digitally tunable filters and Molex series 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 that 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, producing a bandwidth of up to 4GHz. The digital switched capacitors used in this device provide improved filter linearity and frequency response compared to other varactor-based solutions. Its typical insertion loss is 3dB, and its broadband rejection is 3dB, which can minimize system harmonics.

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

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