A new series of 8-bit digital phase shifters have been launched by Pasternack which are programmable over a full 360° range and can produce a discrete set of phase states of up to 255 total steps with 1.4° increments with high accuracy and minimal phase shift error.
These building block components cover broadband microwave and millimetre wave frequencies and are well suited for aerospace and defence radar and EW applications which involve phased array antennas, phase discriminators, beam forming networks and RF communication systems.
The digital phase shifters offer the advantage of having a programmable 8-bit TTL logic interface where phase states can be precisely controlled. The integrated hybrid MIC design architecture offers the benefit of greater immunity to noise on control lines and gives more uniform performance from unit to unit, achieves a flatter phase response over a wider frequency bandwidth with higher power handling and improved linearity performance.
There are four new models of the digital phase shifters available, which cover frequency bands that range from 0.5 to 37GHz. Typical phase shift error ranges from +/-0.9 to +/-5° over eight binary increments with fast switching speed performance from 30 to 450nsec. Maximum input (CW) power varies from +10dBm to +30dBm depending on the model. The compact packages are environmentally sealed and feature field replaceable SMA or 2.92mm connectors and sub-miniature D multi-pin connectors for the power/logic controls.
Additionally, all models are designed to meet MIL-STD-202F conditions for temperature cycle, humidity, shock, altitude and vibration, which give designers added confidence for high reliability operation.
Tim Galla, Active Components Product Manager at Pasternack, commented, “Our comprehensive selection of 8-bit digital phase shifters offer designers optimum response characteristics with programmable tuning accuracy that can be used for a variety of aerospace and defence applications.