niconiconi's blog

Abstract In a WeChat article titled How Large is the Phase Error of Commercially Available VNA Open and Short Calibration Kits?

The following circuit is the well-known infinite ladder network, constructed by repeatedly adding a series impedance 𝑍sZs and a parallel impedance 𝑍pZp.

Introduction In 2021, at the height of cryptocurrency mining, Nvidia released the Nvidia CMP 170HX.

Or: How to avoid 4000% performance degradation if I use HIP Managed Memory Introduction On AMD GPUs, the feature XNACK is essential for running HIP code that uses Managed Memory, or running SYCL code that uses Unified Shared Memory (USM).

Abstract On iOS, background audio autoplay is disallowed, users are not even allowed to add exceptions.

Pictured: Electric field lines of a microstrip transmission line over a ground plane.

Introduction Unix pioneer Ken Thompson’s 1983 Turing Award acceptance speech popularized the now well-known concept of a Reflections on Trusting Trust-style backdoor, or in my words, a meta-backdoor.

Introduction Recently, I’ve purchased a vintage Hewlett-Packard 436A RF power meter and a HP 8484A power sensor for testing a circuit I’m building.

Introduction As a retrocomputing and electronics enthusiast, there are several vintage computer chips in my collection.

Introduction The Analog-to-Digital Converters (ADC) in most microcontrollers (MCU) are slower than 1 Msps since their primary application is relatively slow automatic control and measurements, not the fast data acquisition and processing at high rates.

Image by Don DeBold, CC BY 2.0, some rights reserved.

Creating, rewriting, and abolishing one’s blog or homepage, before starting a new one again - usually also changing themes, blog engines, servers (or even writing one’s own blog engine if you are a web-type person - I’m not).