Focus Microwaves - Focus Compact Modeling Software
The Focus Compact Model (FCM) utility is a streamlined software package designed to be used with Focus’ AURIGA high-end Pulsed-IV system, that is used to generate Compact Models for transistors from their Pulsed-IV and wideband pulsed s-parameter data.
This is achieved by generating a network of lumped circuit elements that represent accurately the fundamental linear & non-linear behavior of the device over a broad range of bias and power range.
The result of the modeling is a netlist and compatible with- the most common CAD tools used in RF Design; such as AWR Microwave office (MWO) and Keysight PathWave Advanced Design System (ADS).
Strategy
Model Generation
EDA Example
Example Measurement Export to CAD - Keysight ADS
Example Model Export to CAD
ADS Schematic
Focus Compact Model
ADS Data Display
Setup
Pulsed S-Parameter Setup
The purpose of electrical representation or equivalent circuit of HEMT or any transistor in the form of lumped circuit elements is to implement and simulate its static and RF behaviour in CAD tools. This technique is particularly useful and often directly correlated to physical entities within the device structure, as illustrated below.
The illustration below is a small signal topology composed of a total of 16 linear components.
This is divided into two parts:
i) The Intrinsic part where the region under the gate (modulation occurs here) represented with a set of 8 intrinsic elements (RGD, Ri, CGS, CGD, CDS, GM, RDS, Τ).
ii) The Extrinsic part represented with a set of 8 extrinsic elements (RG, RD, RS, LG, LD, LS, CPG, CPD). These elements need to be extracted for small signal model implementation. The extraction process will be discussed in the following section.
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More Product Information
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Quick and easy probe tip navigation
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Z drive can work in the same range as the chuck
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Enables higher separation gap while the DUT stays in focus
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Automatically configure and optimize performance
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24/7 operating
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Increased MTBF
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Protects the measurement setup
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Prevents involuntary mechanical contact between lens and probes
See more Key Features in Specifications & Features tab
Focus offers a complete range of manual tuners. The MMT series use the same RF technology and precision as a comparable automatic tuner.
They are available in octave and multi-octave bands between 400 MHz and 18 GHz and provide high VSWR at DUT reference plane with a high reliability.
For harmonic tuning requirements, the MMT series can be enhanced, referring to as option –H2 and –H23, using a similar concept as Focus’ harmonic rejection tuners (PHT).
For more information on Automated Tuners, Click here!
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- This DCS Series Controller provides Lighting Control Flexibility in a compact 112 mm x 124 mm x 46 mm package.
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- Din-rail mount, UL 508a Panel listed and GUI, Web Browser or command line setup and control tools, SDK.
- 3 Independent Outputs – designed to up to 3 lights, synchronously or asynchronously.
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Fast GigE Vision InGaAs SWIR camera
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VGA resolution
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Power over Ethernet
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Compact industrial design, no fan
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Up to 301 fps at full resolution
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GigE Vision interface with Power over Ethernet
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Comprehensive I/O control options
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Automated on-board image correction
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Stabilized sensor cooling, no fan
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Extended operating temperature range
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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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GigE Vision InGaAs SWIR camera
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VGA resolution
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Power over Ethernet
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large pixel with high dynamic
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Compact industrial design, no fan
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GigE Vision interface with Power over Ethernet
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Very high intra-scene dynamic range of 73 dB
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Comprehensive I/O control options
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Automated on-board image correction
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Stabilized sensor cooling, no fan
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Extended operating temperature range
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.
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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