by Atek Midas

An open source, low-cost, software-definable front end preselector for SDRs and wideband receivers

View all updates Oct 05, 2021

We're Live!

by Kagan Kaya

ATEK1001 is a pre-selector module covering the 485 - 7700 MHz frequency bands. It consists of an SP8T switch followed by seven fixed-frequency sub-octave bandpass filters followed by another SP8T switch. (You can also choose to bypass the filters entirely.) It increases the receiver’s dynamic range by filtering out second-order inter-modulation products (IP2 and IMD2), thereby allowing the receiver to monitor a target signal while rejecting unwanted signals.

ATEK1001’s RF inputs and outputs are internally matched to 50 Ohms for ease of use, and it provides 43 dBm of IIP3, which provides for high-dynamic-range, wide-band receiver front-ends. Sub-octave filter-bank architecture improves overall system IIP2.

ATEK1001 is also available in a custom-milled aluminum enclosure that exposes a USB interface through which it can be controlled.

Product Features

  • 485 - 7700 MHz Frequency range
  • Seven switchable bandpass filters
  • Optional custom-milled aluminum enclosure
  • USB interface for control and Vdd supply
  • 43 dBm IIP3
  • Compact (36.4 x 59.9 x 24.8 mm) size


  • Software-defined radio (SDR) projects
  • Test equipment
  • Wide-band receivers
  • Spectrum analysis

The Chip

For those looking to build their own front-end solution, we are also offering the MIDAS ATEK950AP6 IC as part of this campaign. It is a sub-octave switchable filterbank covering the 485–7700 MHz range.

Full Details Now Available

For full details on ATEK1001 and the ATEK950AP6 chip, please see the main project page.

About the Author

Kagan Kaya

$5,390 raised

of $73,000 goal

7% Funded

Pledge Now



A fully assembled evaluation board for the ATEK1001 filterbank chip (ATEK950AP6), including a female USB Type-B port and two 4-hole flange-mount SMA connectors. Pre-installed in a custom-milled aluminum enclosure.


ATEK1001 Evaluation Board

A fully assembled evaluation board for the ATEK1001 filterbank chip (ATEK950AP6), including a USB Type-B receptacle and two soldered, edge-mount SMA connectors.


ATEK1001 Filterbank Chip

ATEK950AP6 is a sub-octave switchable filter bank covering 485–7700 MHz.


Atek Midas

We develop high-frequency integrated circuit (RFIC/MMIC) products for satellite communication, telecommunications, test and measurement and aerospace and defense markets.

Kagan Kaya

Ercan Altuntas

See Also

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