Focus Microwaves - Low Frequency Tuners
The low frequency tuners are a unique product technology using MPT algorithms for low frequency wideband tuning. Three or more cascaded tuning sections use series transmission cables and parallel rotary capacitors.
The length of the cables and number of tuning sections are optimized for maximum tuning range over a given bandwidth. HLFT tuners use 6 tuning sections allowing second harmonic frequency tuning.
A multi-band, electro-mechanical programmable impedance tuner for the frequency range between 10 and 200 MHz uses cascades of three or more continuously variable mechanical capacitors interconnected with sets of low loss flexible or semi-rigid cables; for each frequency band a different set of cables and capacitors are used. The cables and/or variable capacitors inside each tuning block are switchable manually or remotely. Multi-section variable capacitors are also used. Instantaneous impedance tuning is effectuated by changing the state of the capacitors using electrical stepper motors. The tuner is calibrated using a vector network analyzer and the data are saved in the memory of the control computer, which then allows tuning to any user defined impedance within the tuning range. Reflection factor values between O and higher than 0.9 can be obtained using this tuner at all frequency bands.
Model |
Min Frequency |
Max Frequency |
Type |
Datasheets |
| LFT000300015 | 1.5 MHz | 3.0 MHz | Fundamental Low Frequency | |
| LFT002001 | 10.0 MHz | 20.0 MHz | Fundamental Low Frequency | |
| LFT004002 | 20.0 MHz | 40.0 MHz | Fundamental Low Frequency | |
| LFT006003 | 30.0 MHz | 60.0 MHz | Fundamental Low Frequency | |
| LFT008004 | 40.0 MHz | 80.0 MHz | Fundamental Low Frequency | |
| LFT01005 | 50.0 MHz | 100.0 MHz | Fundamental Low Frequency | |
| LFT013006 | 60.0 MHz | 130.0 MHz | Fundamental Low Frequency | |
| LFT0170130 | 130.0 MHz | 170.0 MHz | Fundamental Low Frequency |
More Product Information
Sensors acquisition and recording for troubleshooting is a cumbersome process in a fully furnished or operational aircraft, especially when time and low footprint are key drivers.
This is no more the case with Safran new solution µMA:
- its cylindrical form factor allows easy installation by just requiring a standard clamp used to mount tubes
- its battery power supply and its wireless connectivity removes the need of installing any harness in the aircraft.
All these capabilities are available while providing high measuring performance and harsh environment ruggedized in line with Safran standard solutions.
Noise measurements allow the determination of the four Noise Parameters of a device (transistor). Focus’ Noise Modules integrate well with various third party noise receivers.
Noise Parameters: These are four numbers that fully describe the noise behaviour of an active or passive device (twoport) at a given frequency. For practical reasons we use the following quantities as Noise Parameters:
Focus’ noise parameter extraction routines leverage the PNA-X’s unique implementation
of the cold-source noise figure measurement technique. This specific technique requires a noise source to determine the kBG (gain-bandwidth constant) of the system and a passive mechanical tuner is used to characterize the noise receiver across both the impedance and frequency space. This step is imperative to obtain fully vector-source-corrected measurements.
of the cold-source noise figure measurement technique. This specific technique requires a noise source to determine the kBG (gain-bandwidth constant) of the system and a passive mechanical tuner is used to characterize the noise receiver across both the impedance and frequency space. This step is imperative to obtain fully vector-source-corrected measurements.
A RF down conversion stage might be required if the frequency of noise measured exceeds the receiver’s bandwidth. Focus offers noise modules which support down conversion for optimal speed and performance.
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Versatile temperature range for extreme environments
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IEEE 1588 PTP
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Power over Ethernet
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P-Iris and DC-Iris lens control
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Monochrome (GT2460) and color (GT2460C) models
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GigE Vision interface with Power over Ethernet
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Screw mount RJ45 Ethernet connector for secure operation in industrial environments
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Supports cable lengths up to 100 meters (CAT-6 recommended)
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Trigger over Ethernet Action Commands allow for a single cable solution to reduce system costs
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Comprehensive I/O functionality for simplified system integration
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Popular C-Mount lens mount
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Easy camera mounting via standard M3 threads or optional tripod adapter
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Easy software integration with Allied Vision's Vimba Suite and compatibility to the most popular third party image-processing libraries.
- SPA available from 70KHz to 20/40/70/110/125/145 and 220GHz. Also available for banded configuration to 1.1THz.
- Dual SPA mode available: suitable for Mixers/Amplifier/ Harmonics /Spurious testing.
- SPA available on all ports. User can define which port to use as SPA port.
- Several detection types available in classical mode: Peak, minimum, RMS, Mean.
- Various math functions can be applied on SPA mode like Min hold/max hold/ user defined equations.
- Sources and receivers can be independently configured. Can be used as Tracking Generator.
- For units that have a dual source, a dual drive option is available. Support for external source control also possible.
- Phase synchronization for units with Dual source available. This feature allows users to control and configure the phase between the two sources.
- Source and receiver attenuator available with VNA can be activated in SPA mode. Recommendation to use option 62 (with attenuator on receiver side) for measuring the spectrum content of high-power devices.
- Software option: easy to install and upgrade existing user equipment.
- High Power Density: 600 watts in 1U (1.75 inches) high, half rack (8.5 inches) wide; no top or bottom clearance spacing required.
- Near Linear Ripple & Noise Ripple as low as 2.5mV rms, noise as low as 15mV p-p.
- Remote Control
- LXI Compliant Ethernet LAN / RS-232C (16 bit)
- IEEE-488.2 / RS-232C (12 bit)
- Standard analog programming 0-5V, 0-10V, or 0-5kΩ.
- The LL137 Series provides a focused line of illumination in a passively cooled design.
- Provides a medium intensity level of 280kLux (working distance of 75mm)
- Pre-engineered for expandability in 6” (152mm) increments up to 96” (2.44m).
- Available intensity control provides illuminance adjustability for every 6″ increment via a 0 – 10v input
Note: If only looking for white illumination, our LL167 Series provides a 74% brighter beam in a similar package.
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Combination of DC and RF in a single probe module: One dual probe or a maximum of three RF; a maximum of 9 DC standard (other quantities upon request).
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Utilizes ACP tip design, GSG, GS or SG
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RF tips available from DC to 110 GHz
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Choice of BeCu or tungsten tips
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DC power needles come standard with 100 pF microwave capacitor
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Power bypass inductance: 8 nH
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Maximum DC voltage: 50 V without power bypassing (25 V with standard power bypassing, and component dependent with custom power bypassing)
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Ideal for probing the entire circuit for functional test
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Dual ACP configuration supports differential signaling applications
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DC probes can provide power or slow logic to circuit under test
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Versatile temperature range for extreme environments
-
IEEE 1588 PTP
-
Power over Ethernet
-
P-Iris and DC-Iris lens control
-
Near-Infrared (GT2050NIR) model
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GigE Vision interface with Power over Ethernet
-
Screw mount RJ45 Ethernet connector for secure operation in industrial environments
-
Supports cable lengths up to 100 meters (CAT-5e or CAT-6)
-
Trigger over Ethernet (ToE) Action Commands allow for a single cable solution to reduce system costs
-
Comprehensive I/O functionality for simplified system integration
-
Popular C-Mount lens mount
-
Easy camera mounting via standard M3 threads or optional tripod adapter
-
Easy software integration with Allied Vision's Vimba SDK and compatibility to the most popular third party image-processing libraries.
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Defect pixel masking feature with the Defect Mask Loader tool that allows you to manage a user defined defective pixel list to match your application and optimize the life cycle of the camera.
- Small
- Complete, closed-loop system with embedded controls in less than 28 x 13.2 x 7.5 mm
- Precise
- 0.5 µm resolution
- 6 mm of travel
- Simple system integration
- High-level motion commands over standard serial interface (I2C or SPI)
- Flexible system, fast to market
- Rapidly configurable for push or pull motion
- Low voltage / low power use
- 3.3 V input, <500 mW power use
- Holds position when power is off
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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