Focus Microwaves - RF Test Fixtures
Focus’ modular microstrip, high power and ultra low loss coaxial RF Test Fixtures are designed mainly for load pull testing of packaged transistors. All Focus test fixtures come with TRL calibration standards and support most transistor packages sized from less than 0.1″ and up to 1″.
Special designs include:
- Decade wide (Fmax:Fmin ~10:1) Klopfenstein transformers,
- Water and Air cooling and
- On substrate bias networks.
- Microstrip fixtures (PTJ-x*; Packaged Test Jig) are available with 50Ω lines or built-in λ/4 or taper (Klopfenstein) transformers, harmonic traps and DC bias networks
- Minimum Loss coaxial Test Fixtures (MLTF-x*) (insertion loss < 0.03 dB at 2 GHz) are available with 7mm, N and 7/16 connectors in frequency ranges up to 18 GHz. (US patent 6,464,513)
Both RF Test Fixture types can be fitted with water cooling for RF power up to several hundred Watts.
(*) ‘-x’ indicates the frequency range: DC-4GHz, -6GHz, -12GHz and -18GHz.
Modular RF Power Transistor Test Fixtures
Model |
Frequency |
Connector |
PTJ-S | DC - 4 GHz, TRL Calibration standards | N, 7mm, SMA, 2.9mm, 3.5mm |
PTJ-C | DC - 6 GHz, TRL Calibration standards | N, 7mm, SMA, 2.9mm, 3.5mm |
PTJ-X | DC - 12 GHz, TRL Calibration standards | N, 7mm, SMA, 2.9mm, 3.5mm |
PTJ-Ku | DC - 18 GHz, TRL Calibration standards | N, 7mm, SMA, 2.9mm, 3.5mm |
PTJ-Ka | DC - 26 GHz, TRL Calibration standards | 2.9mm, 3.5mm |
PTJ-Klop | Klopfenstein, custom design | N, 7mm, SMA, 2.9mm, 3.5mm |
Add-On Options
Model |
Description |
TRINW | Transistor Insert with water cooling option |
WCP | Water cooling pump for water cooling option |
XDEL | Extra delay line, standard |
XTRIN | Extra Transistor Insert, Standard |
XTRFS | Extra Transistor Substrate, Custom |
TRFS-CUS | Extra Transformer Substrate, Custom |
XTRCLP | Extra Transistor Clamp, flush mount |
Minimum Loss Test Fixture (MLTF) Coaxial
Model |
Frequency |
Connector |
MLTF-C | DC - 4 GHz | 7mm, N, 7/16 |
MLTF-X | DC - 12 GHz | 7mm, N |
MLTF-Ku | DC - 18 GHz | 7mm, 3.5mm |
MLTF-Ka | DC - 26.5 GHz | 3.5mm |
Minimum Loss Test Fixture (MLTF) Coaxial
Model |
Frequency |
Connector |
MLTF-C | DC - 4 GHz | 7mm, N, 7/16 |
MLTF-X | DC - 12 GHz | 7mm, N |
MLTF-Ku | DC - 18 GHz | 7mm, 3.5mm |
MLTF-Ka | DC - 26.5 GHz | 3.5mm |
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Focus Microwaves
Focus Microwaves is a pioneering engineering company, built around the innovations of its founder Dr. Christos Tsironis who developed his first manual tuner in 1973 and is the inventor of most existing electro-mechanical tuner families. The success of Focus is based on the engineering and manufacturing skills of its highly motivated and experienced team of engineers and technicians, who have been trained and encouraged to develop new technologies. In addition, listening to our customers needs and insights helps us discover and develop new and measurement methods on an ongoing basis, relentlessly pushing the limits of what is possible.
From humble beginnings in 1988, Focus has become the main supplier of advanced Load Pull and Noise Tuner Systems. Our mission is to provide effective, reliable and innovative solutions for non-50 Ohm testing (Noise and Load Pull) of RF microwave transistors, thus enabling our customers to compete in the marketplace with better designs and to advance the understanding and knowledge of the field.
Contact Details
Focus Microwaves Inc. Main Head Office
4555 Chem. du Bois-Franc, Saint-Laurent, QC H4S 1A8, Canada
Phone: +1-514-684-4554
Test & Measurement
