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Posts Tagged ‘RF’

Keysight MXA revision-b signal analyzer / Spectrum analyzer review, analysis & experiments

Monday, March 6th, 2017

Keysight MXA revision-b signal analyzer / Spectrum analyzer review, analysis & experiments from The Signal Path: In this episode Shahriar reviews the long awaited Keysight MXA Signal Analyzer (N9020B). The new X-Series Spectrum Analyzers from Keysight offer an entirely re-designed GUI interface which supports multiple tabs as well as multi-touch interaction....

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Posted in Teardowns | No Comments »

Pen FM transmitter bug

Tuesday, May 24th, 2016

A pen FM transmitter bug project from Talking Electronics: Pen FM Transmitter bug projects have been very popular. The idea of being able to hide a transmitter in a pen is very appealing. In an effort to reduce the size of this design, we have used surface-mount components. Firstly, the...

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Posted in DIY | 2 Comments »

Teardown, repair and experiments with the Anritsu 37347A 20GHz Vector Network Analyzer

Friday, May 13th, 2016

[embed]http://www.youtube.com/watch?v=dwAieDTRMdQ[/embed] Here's another great video teardown from TheSignalPath: In this episode Shahriar repairs an Anritsu 37347A 20GHz Two-Port Network Analyzer. The unit does not boot up and as a result its internal state is unknown. The boot fault is traced to a bad RTC module which has a built-in integrated...

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Simple crystal tester

Monday, May 2nd, 2016

Dilshan Jayakody writes: This is simple Colpitts oscillator to test commonly available passive crystals which range between 2MHz to 27MHz. This unit must connect to an oscilloscope and/or frequency counter to get the frequency of the crystal. This circuit is design to work around 9V to 12V DC power source....

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Posted in RF, testing | No Comments »

Rigol DSA875-TG 9kHz – 7.5GHz Spectrum Analyzer & tracking generator review, teardown & experiments

Friday, November 20th, 2015

Rigol DSA875-TG 9kHz – 7.5GHz Spectrum Analyzer & tracking generator review, teardown & experiments from TheSignalPath: In this episode Shahriar takes a close look at the top-of-the-line Rigol DSA875-TG 7.5GHz Spectrum Analyzer. This unit which, offers a built in tracking generator for the full frequency range, has a portable form-factor. I...

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Teardown & analysis of a Keysight InfiniMax III N2802A 25GHz active probe

Monday, November 9th, 2015

A teardown & analysis of a Keysight InfiniMax III N2802A 25GHz active probe from TheSignal Path: In this episode Shahriar takes a close look at one of Keysight (Agilent) InfiniMax III active probes. The model N2802A offers 25GHz of analog bandwidth, 17.5pS of rise time and a total differential input...

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Building and characterizing a DIY RF power sensor

Tuesday, October 14th, 2014

Kerry Wong writes: For the build, I followed LT’s reference design detailed in the datasheet. For the output filtering, I used a 2.2K/10pF output RC filter to limit the output bandwidth to around 3 MHz. Since we are in the RF realm, board layout becomes much more critical than dealing...

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Wireless LED driver with PCA9634

Friday, September 19th, 2014

Ondřej Karas of DoItWireless writes, "If You are interested in LED driving through RF, this article would be interesting for you. I tested own PCA9634 breakout board for this chip and wrote simple low level driver for IQRF TR-52D module. Next week, I am going to publish PC application for comfortable...

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Posted in LEDs, wireless | No Comments »

App note: Direct-sampling DACs in theory and application

Saturday, March 15th, 2014

An application note from Maxim:  Direct-sampling DACs in theory and application  High-speed digital-to-analog converters (DACs) with high resolution in the 12- to 14-bit range enable new types of transmitter designs that employ a direct modulation scheme. In such designs, the modulated transmission signal is generated directly on the base frequency....

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Variable RF signal sampler

Wednesday, January 22nd, 2014

Brian Dorey  posted an article describing how he built his variable RF signal sampler: It isn’t safe to connect the output of a radio directly into a frequency counter or oscilloscope due to the high voltages and currents on the transmitter and so we needed a way to sample part of the...

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References regarding RF, DC, AC ferromagnetic materials

Friday, June 7th, 2013

Drone writes in suggesting this site with lots of info on RF, DC, AC ferromagnetic materials and applications. The company, RJ & US Imports, has stopped trading but keeps the reference info up as a service to others. Via the contact form.

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Posted in documentation, site | 1 Comment »

Si4707 weather band receiver IC breakout board

Tuesday, August 14th, 2012

AIW designed a breakout board for the Si4707 weather band receiver IC. It features a coax antenna connector, and I2C pins broken out and pulled high to 3.3V. Code sample for interfacing the device to the Arduino was released in the forum. I do have comms utilizing Arduino I2C bus....

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Posted in project logs, RF | 1 Comment »

PIC12LF1840T48A MCU with Integrated Sub-GHz Trasmitter

Wednesday, November 30th, 2011

Octal tipped us off about the new PIC12LF1840T48A microcontrollers that have a built in sub-GHz transmitter: Microchip just published the datasheet related to using the PIC12LF1840T48A Microcontroller with Integrated Sub-GHz Trasmitter. The PIC12LF1840T48A is a Microchip microcontroller that has an on-board transmitter. The transmitter is suitable for operation in the...

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Posted in parts | 4 Comments »

Microchip RF transceiver

Wednesday, December 29th, 2010

William Dillon shares his project, including code, schematic and board file, for his RF transceiver based on the Microchip MRF49XA. Via Hack a Day

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Posted in code, RF | No Comments »

SimpliciTI™ protocol

Monday, December 20th, 2010

SimpliciTI™ is a low-power RF protocol aimed at simple, small RF networks. This open-source software was designed for easy implementation and deployment out-of-the-box on several TI RF platforms such as the MSP430 family of low-power MCUs and the CC1XXX/CC25XX/CC430 transceivers and SoCs. Access point and range extenders are not required...

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Posted in code, documentation, MSP430, RF | No Comments »

MSP430 based RF spectrum analyzer

Monday, November 29th, 2010

Here's a well documented RF spectrum analyzer project by

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Posted in builds, MSP430, tools | 2 Comments »

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