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.
Document
More Product Information
- 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.
Focus Microwaves’ DELTA series of electro-mechanical tuners is designed specifically for high frequency on wafer measurements. The tuner’s low profile allows it to be placed within the wafer perimeter and allows for a direct connection between the probe tip and the tuner, eliminating all possible insertion loss between the DUT and the tuner. This revolutionary new tuner design enables the engineer to achieve optimum tuning range, with a tuner whose footprint and weight has been dramatically reduced.
Brandywine’s RFS-700D is a miniaturized Rubidium Frequency Reference in a compact ruggedized package designed for mounting on a DIN rail system. The RFS-700D is capable of outputting 7x 10MHz frequency reference with low phase noise.
- 24-bit, delta-sigma ADC, simultaneous sampling
- Programmable Sample Rate up to 128kSPS
- Full, Half & Quarter Bridge with 120Ω, 350Ω & 1kΩ bridge completion
- Voltage Excitation: 0.5V to 10V
- Current Excitation: 0.46mA
- 2-Wire & 4-Wire Ohms/RTD
- Bridge Zero Balancing
- Built-In-Self-Test (BIST)
- Strain Lead Wire Calibration
- Shunt Calibration: 50kΩ, 100kΩ & External provided by User
- TEDS Support
- LXI Ethernet Interface
- IEEE-1588 Synchronization
- Power over Ethernet (PoE) or 10–50 V DC input
- Built-in Parallel Data Streaming
- Full-featured Embedded Web Interface
- Compact 1U Half-rack Form Factor
- Part of the MicroBrite™ family of high performance, compact machine vision lights.
- Provides diffuse illumination at a low angle to cast shadows used to identify surface defects, embossed text, etc.
- This ring light is more diffuse and less directional than the DF196.
- Can be used to produce a bright field effect when the outer diameter is smaller than the working distance.
- Available in 4 sizes with an intensity of 47klux (working distance of 64mm with DF198-180).
- The RL2316 is characterized as a Compact Aimed Bright Field ring light.
- Precisely aimed LEDs provide a level of lighting control not found in traditional illuminators.
- A range of standoffs and fields of view may be specified at the time of order.
- The ring light is available in a wide range of wavelengths from UV to IR.
- Diffuser and polarizer options are also available.
- With its compact form factor, the RL2316 is ideal for the inspection of smaller, non-specular objects and where space for the illuminator is limited.
Focus recommends TRL Calibration Kits for applications such as load pull & noise parameters. Due to high reflection and low loss, tuner S-parameter measurements represent a challenge for VNA’s, because of error term determination and coupler directivity. Long experience has taught us not to rely on other calibration techniques than TRL (Thru-Reflect-Line). The popular SOLT technique is conditionally useable, but not guaranteed, up to 4GHz. The much convenient ECal method has provided questionable and inconsistent results. Our Customers are advised to be very careful with VNA calibrations, because the whole measured data depends on that.
Because of this, and to save our customers time and doubt, Focus has developed and offers a set of precise and reliable TRL calibration kits from 0.03 to 110 GHz with the following connector types: 7/16, N, APC-7, 3.5mm, 2.9mm, 2.4mm, 1.85mm, WR-15, WR-10. Our calibration kits are compatible with all commercial network analyzers.
For more information on TRL Calibration Kits, please read the following paper on TRL Versus SOLT
-
Compact 0.5 MP camera
-
Robust metal housing
-
Sony ICX415 sensor
-
Optocoupled I/Os
-
Various IR cut/pass filters
-
White medical housing
Focus provides the deepest portfolio of wideband fundamental and harmonic passive tuners. Passive impedance tuners generate controllable reflection factor (Impedance) across the smith chart over a given frequency range. Focus uses two basic technologies:
-
From 100MHz to 120GHz we use the slide screw technique in which a reflective probe is inserted into a low loss slotted transmission line.
-
For frequencies from 10MHz to 170MHz we use a lumped element technology, whereby variable capacitors are connected with optimized lengths of coaxial cable. To view our Low Frequency Tuners, Click Here!
Most Focus Passive Tuners use long lasting RF probes which are designed for optimal tuning accuracy and are free of spurious resonances. The combination of multiple probes provide ultra wideband coverage in one single tuner. All Focus Passive Tuners are LAN controlled and include on-board impedance synthesis firmware.
For more information on Passive Tuners, visit our youtube channel!
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
Download Line Card
Document
