1. RPG • RPG founded in 1973 • Specialized in the design and fabri- • cation of microwave radiometers • for mm- and submm-applications • (radio astronomy, plasma physics, • ESR spectroscopy, network • analyzer frequ. extensions, • remote sensing of atmosphere, • space borne radiometers) • Development of radiometer sub- • systems (oscillators, mixers, • waveguide components, planar • networks, amplifiers, optics, etc.)

2. RPG Staff • 22 Employees • Management (3) • Marketing (3) • Space Projects (6) • Electrical Enginee- • ring (8) • Electronics (4) • Mechanics (5) • Software & Retrie- • val Development Degrees: 4 x Dr. of Physics, 2 x Master of Physics, 5 x Diploma for Electrical Engineering / Electronics, 1 x Mechanics Master

3. RPG Machine Shop 600 m2 machine shop

4. RPG Machine Shop • 2 numerically controlled lathes with 1 µm precision • 6 milling machines with 1 µm to 5 µm precision • Electro-forming facility (feedhorns, etching of microstrip circuit boards) • Spark erosion facility

5. RPG RF Lab 800 m2 lab space

6. RPG RF Lab • 12 work places for micro- controlled assembly of RF components • 5 test benches (spectrum analyzers, network analyzers, power detectors) • 8 work places in class 1000 clean room facility (200 m2) • Electro-forming facility (feedhorns, etching of microstrip circuit boards) • Environmental chamber (-40°C to +50°C, humidity control)

7. Quality Assurance • Receiver assembly in clean room facility (class 1000) according to space qualification standards • All radiometer parts (except for MMICs and electronic parts) are fabricated in- house • Thermal cycling of radiometer in environmental chamber (at RPG), vibration tests, burn-in

8. Examples of Products (1) • Space qualified local oscillators: • 40 to 1500 GHz (all solid state)

9. Examples of Products (2) • Space qualified front ends: • 183 GHz (4 channels) for sensitive water vapour detection • 90 GHz dual polarized receiver • 150 GHz dual polarized receiver

10. Examples of Products (3) • Transmit / Receive Systems: • 90 GHz, 183 GHz, 220 GHz, 324 GHz, 502 GHz, 640 GHz • for compact ranges (antenna measurement facilities, phase + amplitude)

11. Examples of Products (4) • Turn key radiometers for environmental research: • ice, snow, soil moisture • atmospheric profiling, statospheric water • vapour

12. Examples of Products (5) 424 GHz phase locked beakon transmitter • 22 channel dual profiler + dual pol. 90 GHz for cloud carthography • 95 cm Cassegrain optics • fully steerable

13. RPG Instruments for Atmospheric Remote Sensing Radiometer Models: • RPG-LWP: 23.8 +31.4 GHz channels for LWP and IWV monitoring, Wet/Dry Delay • RPG-LWP-U90: Extends the RPG-LWP by a 90 GHz channel to improve LWP accuracy • RPG-TEMP90: Tropospheric/Boundary Layer Temperature Profiler + 90 GHz channel • RPG-TEMPRO: Tropospheric/Boundary Layer Temp. Profiler • RPG-HUMPRO: Tropospheric Humidity Profiler, LWP, IWV, Wet/Dry Delay • RPG-HATPRO: Tropospheric/Boundary Layer Temp. Profiler + Tropospheric Humidity Profiler, LWP, IWV, Wet/Dry Delay • RPG-TEMP-BL: Boundary Layer Temperature Profiler based on 54.8, 58 GHz channels • RPG-PRR: Polarized Rain Radiometer for Rain Remote Sensing, 10+19+37 GHz v/h Pol.