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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More Product Information
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Different substrate carriers for wafers up to 200 mm or single dies
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Probe cards and/or up to eight positioners
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Probe positioners placed inside vacuum chamber
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Short and stable probe arms
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Joystick controller
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Manual probe positioners with rotary feed-throughs
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Software control of chuck for fast step-and-repeat testing of the entire wafer
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Fast step-and-repeat testing of the whole wafer
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User-centered design minimizes training costs and enhances efficiency
See more Key Features on Specifications & Details tab
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Infinity Probe: best for Al (Si)
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ACP Probe: best for AU (III-Vs)
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|Z| Probe: robust solution (long lifetime)
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RF chuck ±3 μm surface planarity
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Unique 500 μm platen contact/ separation stroke with ≤± 1 μm accuracy for repeatable contact
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Exclusive 1-, 2-, 3-, and 4-port on-wafer calibration algorithms
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Automated calibration monitoring
See more Key Features on Specifications & Details tab
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Solid-state circuits and LCD backlit display for low power consumption and high reliability
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Battery-powered for complete portability and ease of maintenance
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Lightweight aluminum case has hinged compartment in lid for test lead storage
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Small size permits testing in restricted spaces
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Push-button "extended range" switch permits readings up to 9,999 pf or 10,000 megohms - over-range indication on LCD
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Tested and approved for use in any function with fuel in tanks; battery power eliminates need for voltage (safety) checks
An impedance tuner is an apparatus, which generates controllable reflection factor (Impedance) over a certain frequency range. Focus uses two basic technologies:
a) For frequencies from 100MHz to 110GHz (and above) we use the slide screw technique (models Multi Harmonic MPT, wideband (fundamental) CCMT, harmonic rejection PHT), in which a reflective probe (slug) is inserted into the slot of a low loss slotted transmission line (slabline or waveguide).
b) For frequencies from below 10MHz to 170MHz we use a lumped element technology (models LFT), whereby variable capacitors are connected with optimized lengths of coaxial cable.
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Dual Voltage ranges that support over voltage testing on 480V based systems
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Instrument Setups for quickly re-establishing the known instrument state
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500uS time resolution for Transients
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Virtual Panels control software included
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Non-Linear current waveform programming during Load mode
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Phase coordination among multiple units (LKM/LKS)
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Powerful set of analog controls for PHIL and Modulation tests
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Trigger In & Out to permit extensive coordination with external systems
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Extensive Onboard diagnostics
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Digital I/O, including RS232, USB, Ethernet (GPIB optional)
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Intuitive 5” color display for ease of navigation
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Auto-paralleling for maximum flexibility with multi-chassis configurations
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Separate terminal blocks for single phase and 3 phase outputs
Our “A” and “W” Series amplifiers have the power to deliver all the field strength you need. With unsurpassed mismatch capabilities and excellent flatness, they provide all the power promised over the entire operating band.
We subject our amplifiers to the harshest conditions just to make sure they give you reliable service and performance over the long haul. We test them under various output VSWR loads to stress them to the limit. The only problem we ran into was that there were no available loads to handle the enormous power up to 80,000 W that our amplifiers deliver. Whereas this would stop most manufacturers, it presented another challenge to our talented designers, and we designed our own. All our RF solid-state amplifiers have modulation capability that will faithfully reproduce AM, FM or Pulse Modulation appearing on the input signal for use in the most demanding EMC applications.
These technologically advanced amplifiers perform beyond the norm, beyond expectations, and way beyond the abilities of other test amplifiers.
These self-contained, broadband, completely solid-state amplifiers are designed for applications requiring the ultimate in output power over a wide instantaneous bandwidth with high gain. Extensive control and status reporting capabilities are available both locally and remotely. Most models feature air-cooled designs while some higher power units feature liquid cooled designs. The touch-screen panels are intuitive, convenient, and easy to use.
VIAVI supports many rotary and fixed-wing aircraft platforms with an extensive library of aircraft specific interface cables and units. Combined with a VIAVI Fuel Quantity Test Set, the test solution provides complete functional testing and troubleshooting of the fuel quantity system. If you are unable to find your aircraft listed here, we also offer design services for the development of new interfaces and aircraft test procedures.
Available through your GSA Supplier
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Available in single and dual pack versions
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Sensor simulation available to provide thermistor, strain gauges, heater loads, and cell bypass/short.
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Battery behavior easily modified via spreadsheet download to simulate any battery topology including Nickel Metal Hydride, Lithium Ion, and Nickel Cadmium
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Flexible Database Operation
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Fully Programmable
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Completely Configurable
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Attention To Spacecraft Safety
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Eliminates the need for test flight batteries and their associated issues
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Maximum load 3 kW and 250 Vrms
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Real resistance function
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Temperature coefficient < 10 ppm/°C
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
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