TSP #236 - A 77GHz Automotive Radar Module Measurement, Reverse Engineering & RFIC/Antenna Analysis
86.5K views
November 30, 2023 11:00 PM
In this episode Shahriar takes a detailed look at two different automotive 77GHz radar modules. Each module design is presented along with the overall architecture and functional blocks.
The working module measurements are presented with discussions on how to capture an FMCW waveform at mm-wave frequencies. The teardown of the faulty module reveals the overall synthetic aperture design, antenna placement and design considerations and the digital backend processing. A close look at the Infineon 77GHz RFICs are also presented.
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TSP #220 - Infineon 24GHz Doppler Radar Module Detailed Reverse Engineering & ASIC Analysis
59.3K views
January 15, 2023 3:47 PM
In this episode Shahriar takes a close look at the Infineon 24GHz doppler radar module in the spirit of the upcoming IEEE ISSCC 2023 Conference:
https://www.isscc.org/
The 24GHz radar module block diagram and its principle of operation is presented in details as well as the X-Ray of the PCB. Various design techniques and architectures are also explained. The RFIC ASIC is then extracted from the QFN package and examined under the microscope. The internal ASIC elements are correlated to the block diagram with discussions about various mm-wave layout techniques & high-frequency circuit design.
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TSP #130 - Tutorial, Experiment & Teardown of a CDM324 24GHz Doppler Radar Module
91K views
August 12, 2018 11:41 PM
In this episode Shahriar demonstrates a full analysis of a CDM324 24GHz Doppler radar module from IC Station. Opening the module reveals a series of microwave PCB components and several active devices. A complete analysis of the module is presented. The unit is then measured and the impact of antenna impedance and power supply voltage on the output frequency is measured. The phase noise of the output signal is also measured. Using a series of servo motors, the radiation pattern of the antenna array in both azimuth and elevation is also presented.
Using the radar module the speed of a computer fan is remotely measure using an oscilloscope and FFT function.
You can buy your own module from (http://www.icstation.com/).
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TSP #101 - Tutorial, Experiments & Teardown of a 77GHz Automotive FMCW Radar Module
73.3K views
May 28, 2017 10:24 PM
In this episode Shahriar explores the principle operation of automotive FMCW radars. Thanks to a donated automotive radar module, various components of the system can be examined and explored. The PCB reveals three die-on-PCB ASICs responsible for generating and receiving 77GHz FMCW signals coupled to a 2D array of antennas. Several microwave components such as rat-race couplers and branchline couplers can also be observed. PCB rulers from SV1AFN Design Lab (link below) also show these microwave components at much lower frequencies. Two other ICs are used for ramp generation and PLL as well as a multi-input LNA/PGA/AAF with 12-bit ADC for IF processing. All components are examined under the microscope and the frequency of operation is calculated by measuring the branchline coupler’s dimensions.
Finally a simple Doppler effect radar is constructed by using a doubler, power divider, mixer and a pair of Vivaldi horn antennas. The Doppler effect can be observed by moving an object in front of the antenna pair.
Get your microwave ruler here:
https://www.sv1afn.com/pcbruler.html
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TSP #224 - Signal Hound SM435C 43.5GHz Real-Time Spectrum Analyzer Review, Teardown & Experiments
32.9K views
March 26, 2023 12:08 AM
In this episode Shahriar reviews the successor to the popular Signal-Hound SM200C, the SM435C Real-Time Spectrum Analyzer covering 100kHz – 43.5GHz with 160MHz of gapless I/Q steaming using a 10GbE optical interface.
https://signalhound.com/products/sm435c-43-5-ghz-real-time-spectrum-analyzer-with-10gbe/
With its constantly improving Spike software and incredible 1THz/s sweep rate, the SM435C has the potential to be a dream software-defined radio as well as a powerful laboratory & field instrument. This detailed review is organized as follows:
00:00 – Introduction
01:47 – Instrument overview & design
03:49 – Teardown, detailed circuits & systems overview and analysis including X-Ray imaging
16:33 – Analysis of a 24GHz pulsed radar module, real-time capability, zero-span mode, fast sweeps
29:06 – Noise figure personality and noise-figure measurements features
33:40 – Phase noise personality and characterizing the internal instrument phase-noise
35:49 – mm-Wave transmit mixer characteristics, digital demodulation capabilities
39:05 – Wideband IF output for digital demodulation using a Keysight MXR & PathWave VSA
41:35 – Wideband IF output for rapid pulse hopping analysis using a Tektronix MSO-6B Series
45:06 – Additional Spike software features
46:11 – Concluding remarks
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