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The Most Honest Line at EuMW 2026: An AI Agent’s Instruction File for Keysight ADS

The Most Honest Line at EuMW 2026: An AI Agent’s Instruction File for Keysight ADS

Keysight’s agentic AI demo built a 50 Ω thru in ADS from a chatrequest. The instruction file behind it admitted that an earlier draft usedAPI calls that do not exist,...

19. Okt 2026Brownkeys SignalByThomas
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Conversion Phase Needs an LO Reference: Reading a Vector Mixer Measurement at EuMW 2026

Conversion Phase Needs an LO Reference: Reading a Vector Mixer Measurement at EuMW 2026

At EuMW 2026, Anritsu showed scalar and vector mixer measurements on its four-port Tensor VNA. On the demo screen, a consistent phase slope gave about 3.6 ns of group delay,...

14. Okt 2026Brownkeys SignalByThomas
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Know the Limits of Your Own View: Spectrum Monitoring and GNSS PNT Verification at EuMW 2026

Know the Limits of Your Own View: Spectrum Monitoring and GNSS PNT Verification at EuMW 2026

Two Keysight stations at EuMW 2026 dealt with the RF world outside the lab: networked spectrummonitoring at 750 MHz with 100 MHz bandwidth, and GNSS receiver verification against a simulated...

2. Nov 2026Brownkeys SignalByThomas
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Same Screen, Different Offsets: Reading a Phase Noise and AM Noise Demo at EuMW 2026

Same Screen, Different Offsets: Reading a Phase Noise and AM Noise Demo at EuMW 2026

Keysight’s signal purity demo showed phase noise and AM noiseof three 10 GHz carriers from a two-channel hybrid YIG/DDS source.Markers at 312.830 kHz and 278.346 kHz looked comparable but werenot....

23. Okt 2026Brownkeys SignalByThomas
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One Connection, Four Views of an Amplifier: Notes From the Tensor VNA Demo at EuMW 2026

One Connection, Four Views of an Amplifier: Notes From the Tensor VNA Demo at EuMW 2026

At EuMW 2026, Anritsu's Tensor VNA ran compression, gain at compression, IP3 and a two-tone IMD spectrum from a single connection. A channel-by-channel read of the screen shows what each...

10. Okt 2026Brownkeys SignalByThomas
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Virginia Diodes Compact W-Band VNA Extender + MilliBox at EuMW 2025: When Geometry Becomes Part of the Measurement

Virginia Diodes Compact W-Band VNA Extender + MilliBox at EuMW 2025: When Geometry Becomes Part of the Measurement

A compact Keysight P5006B VNA. Two VDI WR10+ extenders covering 67–115 GHz. A MilliBox GIM04 300E multi-axis robotic arm sweeping a W-band module through angular positions. At EuMW 2025, this...

10. Mai 2026Brownkeys SignalByThomas
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Image Rejection Peaked at −88.2°, Not 90°: Reading an I/Q Mixer Phase Sweep at EuMW 2026

Image Rejection Peaked at −88.2°, Not 90°: Reading an I/Q Mixer Phase Sweep at EuMW 2026

Keysight’s PNA-X characterised an I/Q mixer over LO frequency, baseband frequency and Q drivephase. Image rejection peaked at 46.93 dB at −88.2°, not 90°. The 1.8° offset is the device’s...

26. Okt 2026Brownkeys SignalByThomas
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Mini-Circuits + VDI + Erickson PM5B at EuMW 2025: The 115 GHz Demo Nobody Stopped For — and Why It Mattered Most

Mini-Circuits + VDI + Erickson PM5B at EuMW 2025: The 115 GHz Demo Nobody Stopped For — and Why It Mattered Most

The display read 15.306. No robotic arm. No giant screen. Just a Mini-Circuits synthesizer at 9583.333333 MHz × 12 = 115 GHz, a VDI multiplier, and an Erickson PM5B with...

12. Mai 2026Brownkeys SignalByThomas
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Virginia Diodes 300 GHz Dual Polarization OTA Link at EuMW 2025: 63 Gbps Over the Air — and What the Demo Doesn't Show You

Virginia Diodes 300 GHz Dual Polarization OTA Link at EuMW 2025: 63 Gbps Over the Air — and What the Demo Doesn't Show You

285 GHz. 12.5 GHz bandwidth. Dual polarization H+V. 63 Gbps. Live OFDM error summary on a Keysight UXR real-time oscilloscope. The Virginia Diodes demo at EuMW 2025 was the most...

8. Mai 2026Brownkeys SignalByThomas
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One Pulse, Three Sensors: What a Synchronised Power Measurement Reveals About an Amplifier’s Tail

One Pulse, Three Sensors: What a Synchronised Power Measurement Reveals About an Amplifier’s Tail

At EuMW 2026, Anritsu showed a bi-directionalcoupler with three synchronised peak power sensors on a pulsedamplifier. The ratio between the channels held at 19.741 dB while theabsolute values drifted. The...

10. Okt 2026Brownkeys SignalByThomas
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Sweep Past the Passband: Verifying a Ku-Band Waveguide Filter/Coupler Assembly to 43.5 GHz

Sweep Past the Passband: Verifying a Ku-Band Waveguide Filter/Coupler Assembly to 43.5 GHz

At EuMW 2026, Smiths Interconnect measured a Ku-band integrated filter/coupler assembly on an Anritsu ShockLine four-port VNA from 50 MHz to 43.5 GHz. The passband was clean, but the more...

14. Okt 2026Brownkeys SignalByThomas
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Reading the Manual vs Reading the Trace: Anritsu's AI-Powered VNA at 220–330 GHz

Reading the Manual vs Reading the Trace: Anritsu's AI-Powered VNA at 220–330 GHz

At EuMW 2026, Anritsu showed its Tensor VNA, billed as the first AI-powered VNA, running a WR-3.4 thru from 220 to 330 GHz. Today the assistant reads the manual: setup,...

12. Okt 2026Brownkeys SignalByThomas
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An AI Agent on the RF Bench: The Power Budget Is the Guardrail

An AI Agent on the RF Bench: The Power Budget Is the Guardrail

At EuMW 2026, Keysight showed an AI agent driving a source, asignal analyser and a ZX60-24A-S+ amplifier through a harmonics test.The key engineering content was a written power budget: −10...

15. Okt 2026Brownkeys SignalByThomas
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A Demo-Board S21 Is Not a Connector S21: Board-to-Board Coax Interconnects at 40 GHz

A Demo-Board S21 Is Not a Connector S21: Board-to-Board Coax Interconnects at 40 GHz

At EuMW 2026, Smiths Interconnect demonstrated EZiCoax spring-loaded board-to-board coax contacts on an Anritsu ShockLine USB VNA. The card quoted about −1 dB at 40 GHz, and the screen showed...

14. Okt 2026Brownkeys SignalByThomas
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Caught Mid-Calibration: Why an 8 GHz Analysis Span at 20 GHz Needs Full-Path Correction

Caught Mid-Calibration: Why an 8 GHz Analysis Span at 20 GHz Needs Full-Path Correction

At Keysight’s Master Signal Analysis station, the 89600 VSAshowed an 8 GHz span at 20 GHz while calibrating. The uncorrectedspectrum showed strong tilt and periodic notches: cable loss, mismatchripple and...

28. Okt 2026Brownkeys SignalByThomas
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Delay and Doppler in Motion: What End-to-End NTN Emulation Has to Reproduce

Delay and Doppler in Motion: What End-to-End NTN Emulation Has to Reproduce

Keysight’s end-to-end NTN demo used a PROPSIM FS16 channelemulator to reproduce a LEO satellite pass: Doppler swinging from about+40 kHz through zero, and delay changing by milliseconds. These time-varying effects,...

28. Okt 2026Brownkeys SignalByThomas
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