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Title / Description |
Published |
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Integrated Synthesizer/Mixer Application Note Matching Circuits and Baluns
The RFFC207x and RFFC507x are monolithic mixer circuits with integrated frequency generation, a fractional-N synthesizer and VCO. The mixers are wideband and can be used for up and down conversion. The RFFC207x mixers cover the frequency range 30MHz More... |
Nov 2012 |
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A Highly Integrated 2.2V RF Frequency Converter with Flexible Tuning Range
Frequency generation and conversion is at the heart of many modern communication systems. At its most basic level a frequency converter requires a low noise local oscillator with a phase locked loop and an up/down-conversion mixer. Excellent synthesi More... |
Nov 2012 |
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Insertion Tests and Model Simulation for RFSW2100
RFMD has many semiconductor switches that were designed as Tx/Rx switches for various radio systems. In these applications it is generally assumed that the switch presents little or no effect on the signal path other than a short line length with low More... |
Sep 2012 |
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Isolation at High Input Power: SPDT Switch Comparison
With the increasing popularity of the LTE standard now prevalent across many of today's wireless service providers and developers, the demand for high-performance RF components is growing rapidly. LTE developers today seek to implement high-linearity More... |
Sep 2012 |
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RFCM2680 PCB Thermal Design Requirements
The RFCM2680 is a power doubler amplifier SMD Module. The part employs GaAs pHEMT die and GaN HEMT die, has high output capability, and is operated from 45MHz to 1003MHz. It provides excellent linearity and superior return loss performance with low n More... |
Sep 2012 |
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RF6201EM357 Reference Design
The RF6201EM357 reference design is a partnership between RFMD and Ember presenting a complete 2.4GHz IEEE 802.15.4-2003-compliant radio transceiver solution. Ember presents a fully integrated system-on-chip (SoC) with 32-bit ARM® CortexTM-M3 micropr More... |
Jun 2012 |
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RFSA2524
RFSA2524 is a MCM package 5-bit Digital Step Attenuator (DSA) that is capable of high linearity over the entire 31dB gain control range with excellent step accuracy in 1dB steps. The RFSA2524 has a serial control interface that is both 3V and 5V comp More... |
May 2012 |
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RFSA2514
RFSA2514 is a MCM package 5-bit, 75 Digital Step Attenuator (DSA) that is capable of high linearity over the entire 15.5dB gain control range with excellent step accuracy in 0.5dB steps. The RFSA2514 is controlled by a serial control interface that More... |
May 2012 |
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RFSA2654
RFSA2654 is a MCM package 6-bit, 75Ω Digital Step Attenuator (DSA) that is capable of high linearity over the entire 31.5dB gain control range with excellent step accuracy in 0.5dB steps. The RFSA2654 is controlled by a serial control interface More... |
Apr 2012 |
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RFMD2014
The RFMD2014 is direct quadrature modulator for use in cellular base stations and other communications systems. RFMD2014 supports cellular, 3G, WiMax, and LTE air interface standards. This device features operation from 1450MHz to 2700MHz with excell More... |
Mar 2012 |
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Small-Signal Intermodulation Distortion in OFDM Transmission Systems
In the analysis of intermodulation distortion in OFDM systems, a simple third order model for the amplifier AM-AM distortion, which can be parameterized in terms of the amplifier linear gain and IP3, was employed in the evaluation of ACPR and EVM con More... |
Mar 2012 |
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Amplifier RF Voltage and Current Calculations for Different Loading Conditions
In wireless applications, involving a variable antenna load at the amplifier output, the maximum RF voltage and current swings at the output of the amplifier and the antenna port need to be estimated in order to assess antenna interaction effects wit More... |
Feb 2012 |
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RFSA2013
The RFSA2013 is a 3mm × 3mm QFN package voltage controlled attenuator. This attenuator is ideal for cellular, 3G Infrastructure, WiBro, WiMax, LTE, Microwave Radio, and High Linearity Power Control. The RFSA2013 offers good attenuation operation vers More... |
Feb 2012 |
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RFSA2714
RFSA2714 is a QFN package 7-bit Digital Step Attenuator (DSA) that is capable of high linearity over the entire 31.75dB gain control range with excellent step accuracy in 0.25dB steps. The RFSA2714 is parallel controlled and has an on-chip decoder th More... |
Feb 2012 |
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Push-Pull High IP2 Amplifiers
With the abundance of data and voice traffic being transmitted across standard cable and wireless pathways and the ever increasing linearity requirements of CATV amplifiers, there is a great need for amplification that optimizes gain, VSWR, efficienc More... |
Jan 2012 |
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Using the RFFC5072 as a 5.8GHz Signal Source
This application note describes how the RFFC5072 may be configured as a 5.8GHz signal source by using the second harmonic of the LO signal generated in the mixer. This involves setting the LO frequency to 2.9GHz, and using a 4.9GHz to 5.9GHz ISM band More... |
Dec 2011 |
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RFPA2013
The RFPA2013 is a 0.5W QFN package power amplifier specifically designed for Wireless Infrastructure applications. The RFPA2013 is a single-stage GaAs HBT power amplifier offering ultra-linear operation at a comparably low DC power making it ideal fo More... |
Nov 2011 |
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RFGA2012
The RFGA2012 is DFN package power linear amplifier specifically designed to achieve high OIP3. It offers ultra-linear performance
at low DC power. The RFGA2012 features a VBIAS pin that enables users to optimize the quiescent current for specific re More... |
Nov 2011 |
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Integrated Synthesizer/Mixer Matching Circuits and Baluns
This document describes the implementation of baluns and matching circuits for the mixer ports of the RFFC207x and RFFC507x family of devices. The most suitable implementation will depend on the application and frequency plan. The trade-offs between More... |
Jul 2011 |
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RFFC507x Mixer Performance Above 4GHz
The RFFC5071/5072 datasheet contains test results for the RF mixers up to frequencies of 4GHz. This application note presents further test results for frequencies above 4GHz. The application circuits used on the mixer ports for these measurements are More... |
Jun 2011 |
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RFPA2189 Typical Performance for Multiple Application Circuits
The RFPA2189 is a 0.5W SOT-89 power amplifier (PA) specifically designed for wireless infrastructure applications. It is a single-
stage GaAs HBT PA offering ultra-linear operation at a comparably low DC power, making it ideal for next-generation ra More... |
Jun 2011 |
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RFPA0133 Typical Performance for a 698MHz to 794MHz Application Circuit
The RFPA0133 is a QFN, 16-Pin, 3mm x 3mm, 3V to 5V, high efficiency programmable gain amplifier manufactured on an advanced Gallium Arsenide Hetero-junction Bipolar Transistor (HBT) process. Ideal for analog communications systems, 900MHz spread spec More... |
May 2011 |
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RFMD208x Modulator Output Match
The RFMD2080 and RFMD2081 are IQ modulators with integrated fractional-N synthesizer and VCOs. The RF output range of the modulators is from 45MHz to 2700MHz. This application note gives information on the baluns and matching that can be implemented More... |
May 2011 |
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PLL Synthesizer Programming
The Phase Locked Loop (PLL) Synthesizer is programmed via a 3-wire serial interface. There are three words that need to be transmitted to the unit. These are the Function word, the Reference Counter word and the AB-Counter word. This programming note More... |
Dec 2010 |
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Low/Medium Power Channel Selective Repeater Application
A cellular repeater is a system of duplex reception, amplification, and transmission used to enhance uplink (UL) and downlink (DL) signals in areas of low radio coverage. This enhancement expands the coverage of cellular network base transceiver stat More... |
Aug 2010 |
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Reducing RF205x Synthesizer Lock Time
Information required to reduce the lock time of the fractional-N synthesizer used in all of
the RF205x family of integrated, configurable components. |
Feb 2010 |
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SGA-8343 GPS Application Circuits
RFMD’s SGA-8343 is a high performance SiGe amplifier designed for operation from DC to 6GHz. This application note illustrates
application circuits for GPS (Global Positioning System) frequency band (1575MHz). The first application circuit is optimi More... |
Nov 2009 |
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RF2053 Phase Noise
This application note presents phase noise results for the RF2053 for a narrowband / fixed LO application, and for an application requiring the VCO to tune over an octave range. The narrowband circuit uses an RFMD UMX-236-D16 VCO at 1660MHz. This VCO More... |
Sep 2009 |
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RF205x Family Matching Circuits and Baluns
This document describes the implementation of baluns and matching circuits for the mixer ports of the RF205x family of devices. The most suitable implementation will depend on the application and frequency plan. The trade offs between different imple More... |
Sep 2009 |
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FPM21500QFN 0.9GHz LNA Evaluation Board
The data given above is based on measurements taken on the evaluation board described
in this data sheet. This evaluation board is a balanced, dual biased, low noise amplifier. It
is reactively matched at a frequency of 700 to 900 MHz. The active d More... |
May 2009 |
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SZA-5044 Biasing, VPC Selection, and Performance versus Supply Voltage
The SZA-5044 is a very flexible amplifier in terms of biasing. It can be run deep class AB for best efficiency and up to near class A for the best linearity. The power on/off control voltages are accessible for each of the three stages and nominal cu More... |
Apr 2009 |
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SZA-2044 Biasing, VPC Selection, and Performance versus Supply Voltage
The SZA-2044 is a very flexible amplifier in terms of biasing. It can run deep class AB for best efficiency and up to near class A for best linearity. The power on/off control voltages are accessible for each of the three stages and nominal currents More... |
Mar 2009 |
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FPM2750QFN 1.7GHz to 2.0GHz LNA Evaluation Board
The data given above is based on measurements taken on the evaluation board described in this data sheet. This evaluation board is a balanced, dual biased, low noise amplifier. It is reactively matched at a frequency of 1700 to 2000 MHz. The active d More... |
Mar 2009 |
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FPD750SOT89 2.4GHz to 2.6GHz LNA Evaluation Board
This evaluation board is a single-ended, dual biased, power amplifier. It is reactively
matched at a frequency of 2.4 to 2.6GHz. The active device is a Filtronic FPD750SOT89;
a double-heterojunction, 750μm gate periphery PHEMT. The connectors are S More... |
Mar 2009 |
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FPM21500QFN 2.5GHz to 2.6 GHz LNA Evaluation Board
The data given above is based on measurements taken on the evaluation board described in this data sheet. This evaluation board is a balanced, dual biased, low noise amplifier. It is reactively matched at a frequency of 2500MHz to 2600MHz. The active More... |
Mar 2009 |
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FPM21500QFN 1.7GHz to 2.0GHz LNA Evaluation Board
The data given above is based on measurements taken on the evaluation board described in this data sheet. This evaluation board is a balanced, dual biased, low noise amplifier. It is reactively matched at a frequency of 1700 to 2000 MHz. The active d More... |
Dec 2008 |
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SPB2026Z 800MHz to 960MHz Application Circuit
This application note is intended to provide a reference point for an amplifier circuit design using RFMD’s SPB-2026Z at 900MHz, having a bandwidth of approximately 160MHz. |
Nov 2008 |
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FPM2750QFN 2.5GHz to 2.6GHz LNA Evaluation Board
The data given above is based on measurements taken on the evaluation board described in this data sheet. This evaluation board is a balanced, dual biased, low noise amplifier. It is reactively matched at a frequency of 2500 to 2600 MHz. The active d More... |
Nov 2008 |
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FPM2750QFN 0.9GHZ LNA Evaluation Board
The data given above is based on measurements taken on the evaluation board described in this data sheet. This evaluation board is a balanced, dual biased, low noise amplifier. It is reactively matched at a frequency of 700 to 900 MHz. The active dev More... |
Nov 2008 |
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FPD750SOT89 5.6GHZ LNA Evaluation Board
This evaluation board is a single-ended, dual biased, power amplifier. It has a distributed
match with a frequency range of 5.15GHz to 5.85GHz. The active device is a Filtronic
FPD750SOT89; a double-heterojunction, 750μm gate periphery PHEMT. The c More... |
Nov 2008 |
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FPD750SOT89 3.5GHZ LNA Evaluation Board
This evaluation board is a single-ended, dual biased, power amplifier. It is reactively
matched at a frequency of 3.4-3.6GHz. The active device is a Filtronic FPD750SOT89.
A lower noise figure of 0.6dB can be achieved by biasing the device at 4V, 5 More... |
Nov 2008 |
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RF2051 WLAN Band Shift
The information presented here shows that the RF2051 works well in this application as a WLAN band shifter. The device is well-suited for band-shifting applications, containing the two mixers for up and down conversion as well as all of the local osc More... |
Oct 2008 |
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SGA-8543Z Amplifier Application Circuits
SGA-8543Z is a high performance SiGe amplifier designed for operation from 50 MHz to 3.5
GHz. This application note illustrates application circuits for the 880 MHz and 2440 MHz frequency bands. |
Aug 2006 |
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Handling of Unpackaged Die
Practices that should be followed when using handling unpackaged die. |
Oct 2005 |
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SXB-2089Z Amplifier Application Circuits
SXB-2089 is a high high linearity InGaP/GaAs Heterojunction Bipolar Transistor (HBT) MMIC designed for operation from 5 to 2500 MHz. This application note illustrates application circuits for 450MHz (Mobile Wireless Band) &
2140MHz (UMTS Band). |
Jul 2005 |
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SBB-2089 High CSO Push-Pull CATV Amplifier
With the abundance of data and voice traffic being transmitted across standard cable and wireless pathways and the ever increasing linearity requirements of CATV amplifiers, there is a great need for amplification that optimizes gain, VSWR, efficienc More... |
Jul 2005 |
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SGL-0363 GPS Application Circuit
SGL-0363 is a high performance SiGe LNA designed for operation from DC to 6 GHz. This application note illustrates application circuits for GPS (Global Positioning System) frequency band (1575 MHz). |
Jun 2005 |
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Solder Reflow Recommendations Sn/Pb and Pb Free for Plastic RFICs
This application note will provide information about reflow profiles and document our
recommended maximums for each phase of the reflow profile. It applies only to plastic encapsulated packages. |
Sep 2004 |
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Solder Reflow Recommendations Sn/Pb and Pb Free for Plastic RFICs
This application note will provide information about reflow profiles and document our
recommended maximums for each phase of the reflow profile. It applies only to plastic encapsulated packages. |
Sep 2004 |
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STA-6033 Biasing, Vpc Selection and Performance vs Supply Voltage
The STA-6033 is a very flexible amplifier in terms of biasing. It can be run deep class AB for best efficiency and up to near class A for the best linearity. This application note has targeted 802.11a and the circuits and biasing have been optimized More... |
Aug 2004 |
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SGA-8343 Amplifier Application Circuits
SGA-8343 is a high performance
SiGe amplifier designed for operation from DC
to 6 GHz. This application note illustrates several application circuits for key frequency bands in the 800-2500 MHz spectrum. |
Jun 2003 |
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Output Return Loss Of High Power Class AB Amplifiers
For a designer experienced at working with small signal, linear RF circuit design, moving to high frequency, high power, high efficiency power amplifier design might, initially, seem to be straight forward. Although many of the design criteria are co More... |
Nov 2002 |
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SGA-6589 Wideband (50-1000 MHz) Driver Circuit
New Silicon / Germanium amplifier gain blocks
exhibit a combination of wide bandwidth, high
gain,IP3 and low noise figure. The SGA6589 is a
medium power gain block for which a versatile,
wideband RF driver application circuit has been
developed. More... |
Jan 2002 |
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Gain Block Active Bias Circuit
Gain Block amplifiers (SGA,NGA,SNA,SCA series) sometimes require power supply voltages very close to the rated device voltage. This provides a challenge to stabilize current with temperature and device-to-device bias voltage variations. A cost effect More... |
Jan 2002 |
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SGA-2486 Gain Flatness Compensation Circuit
New SiGe amplifier gain blocks exhibit a combination of wide bandwidth, high gain and IP3 with a low noise figure. This application note describes circuits that have been developed to improve gain flatness over a wide frequency range. |
Jan 2002 |
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Calculating Junction Temperature from Thermal Resistance
To illustrate the thermal resistance of a packaged power semiconductor device, the analogy of an electrical resistor network will be used. In the electrical resistor model the electrical resistance is defined by the potential difference (voltage) acr More... |
Jan 2002 |
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An ESD Overview, and Suggested Handling Precautions (Class 0 Devices)
Static electricity is the charge that builds up on dissimilar materials when they are brought together then separated. We’ve all experienced static electricity in our houses during the winter, when walking on the
carpet causes static to build up on More... |
Jan 2002 |
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An ESD Overview, and Suggested Handling Precautions (Class 1A Devices)
Static electricity is the charge that builds up on dissimilar materials when they are brought together then separated. We’ve all experienced static electricity in our houses during the winter, when walking on the carpet causes static to build up on o More... |
Jan 2002 |
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An ESD Overview, and Suggested Handling Precautions (Class 1B Devices)
Static electricity is the charge that builds up on dissimilar materials when they are brought together then separated. We’ve all experienced static electricity in our houses during the winter, when walking on the carpet causes static to build up on o More... |
Jan 2002 |
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An ESD Overview, and Suggested Handling Precautions (Class 1C Devices)
Static electricity is the charge that builds up on dissimilar materials when they are brought together then separated. We’ve all experienced static electricity in our houses during the winter, when walking on the carpet causes static to build up on o More... |
Jan 2002 |
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An ESD Overview, and Suggested Handling Precautions (Class 2 Devices)
Static electricity is the charge that builds up on dissimilar materials when they are brought together then separated. We’ve all experienced static electricity in our houses during the winter, when walking on the carpet causes static to build up on o More... |
Jan 2002 |
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An ESD Overview, and Suggested Handling Precautions
Static electricity is the charge that builds up on dissimilar materials when they are brought together then separated. We’ve all experienced static electricity in our houses during the winter, when walking on the carpet causes static to build up on o More... |
Jan 2002 |
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A Direct Quadrature Modulator for 0.9 GHz to 2.5 GHz Wireless Systems
The RF2422 direct quadrature modulator fills an important gap in 2GHz wireless systems. Direct modulation up to 2.5GHz is now possible with a proven chip that can greatly simplify a wireless transmitter. The RF2422 packs numerous discrete functions i More... |
Aug 1994 |