Source: docs/proposal.md, docs/design_document.md

What is the GPA35?

The GPA35 (Gjallarhorn Power Amplifier 35W) is a compact, modular RF power amplifier delivering at minimum 35W of saturated output power across 0.3GHz-6GHz. It is designed for cellular (4G/5G) and ISM-band applications where size, weight, and power (SWaP-C) are constrained.

GPA35

Key features

Wide frequency coverage: 0.3GHz-6GHz
Tunable output power: 5W-35W, digitally adjustable
Digitally controlled boost converter: regulates the PA drain supply from a wide DC input range
Integrated Coupler path: Internal RMS power detector or 40dB coupler RF path (CPLOUT)
USB-C interface: streams telemetry ("biometrics") for monitoring and closed-loop control
Bandpass filtering: tunable RF front-end filtering
Bi-Directional: supports bi-directional RF operation
Conduction-cooled, rugged enclosure: adaptable mounting for integration into a host system

At a glance


Frequency range	0.3GHz - 6GHz
Output power	5W - 35W (tunable)
DC input voltage	12VDC - 48VDC
Operating temperature	-20C to 55C (nominal); see Maintenance & Repair for cooling requirements
Size	1.6in (H) x 2.9in (W) x 5.6in (L)
Weight	under 7 lbs
Host interface	USB-C

Note: Detailed RF performance (gain, NF, P1dB, OIP3, PSat) and the underlying hardware design can be requested by sending an email to suppo.nosp@m.rt@q.nosp@m.ynosy.nosp@m.s.co.nosp@m.m.

Roadmap

The modular architecture is designed to scale to other output power levels, and an onboard compute platform is planned to support future self-tuning and load-detection. Contact Qynosys for current availability of these features on your unit.