Digital phase shifter offers GaAs performance on CMOS
A new digital phase shifter from Peregrine Semiconductor is available at Richardson RFPD, supported by full design capabilities. The PE44820 is a HaRP technology-enhanced 8-bit digital phase shifter (DPS) that covers a phase range of 358.6 degrees in 1.4 degree steps, maintaining excellent phase and amplitude accuracy across the nominal frequency band of 1.7GHz to 2.2GHz.
The device is also capable of extended frequency operation from 1.1GHz to 3.0GHz for narrow band applications.
It is manufactured on Peregrine’s UltraCMOS process, a patented variation of silicon-on-insulator (SOI) technology on a sapphire substrate, offering the performance of GaAs with the economy and integration of conventional CMOS.
The new DPS features an integrated digital control interface that supports both serial and parallel programming of the phase setting, as well as an external negative supply option for a faster switching frequency. In addition, no external blocking capacitors are required if 0 VDC is present on the RF ports.
The PE44820 is offered in a 32-lead 5 mm x 5 mm x 0.85 mm QFN package and is designed for use in a broad range of applications, including beamforming networks, distributed antenna systems, active antenna systems, and phased array.
According to Peregrine, additional key features of the device include:
- 8-bit full-range phase shifter of 358.6° (180°, 90°, 45°, 22.5°, 11.2°, 5.6°, 2.8° and 1.4° bits)
- RMS phase error: 1.0°
- RMS amplitude error: 0.1dB
- Linearity: +6 dBm IIP3
- Operating temperature: +105°C
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