X-band GaAs Phase Driver MMIC optimized for GaN-based Phased-Array Radar Transmit Chain
conference paper
In the transmit chain of high-power phased-array radars more and more use is made of Gallium-Nitride (GaN) high-power amplifiers (HPAs), while in the receive chain there is a trend to move to integrated silicon (Si) based components. The GaN amplifiers usually require a relatively high input power, making it necessary to include a medium power driver amplifier. For phased-array operation also a phase shifter in the transmit chain is required. In this paper the design and measurement results of an integrated phase-shifter-driver MMIC are presented, which has been optimized to directly drive an X-band GaN HPA. This Gallium-Arsenide (GaAs) MMIC has been designed to fit in a low-cost plastic QFN package to reduce the cost of the front-end module assembly. The realized QFN-packaged MMIC features a 6-bit digital phase shifter and a CW output power of more than 22 dBm at a source power of 5 dBm, from 8 to 11 GHz. Over this bandwidth the measured RMS phase error is less than 5°.
TNO Identifier
842970
Publisher
IEEE
Source title
Proceedings of the 14th European Microwave Integrated Circuits Conference, 24-25 September 2018, Madrid, Spain.
Pages
118-121
Files
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