Contact-free, passive, electromagnetic resonant sensors for enclosed biomedical applications: A perspective on opportunities and challenges
Inexpensive and accurate tools for monitoring conditions in enclosed environments (through
garments, bandages, tissue, etc.) have been a long-standing goal of medicine. Passive …
garments, bandages, tissue, etc.) have been a long-standing goal of medicine. Passive …
[HTML][HTML] Measurement of the broadband complex permittivity of soils in the frequency domain with a low-cost Vector Network Analyzer and an Open-Ended coaxial …
The performance of a handheld Vector Network Analyzer (VNA), the nanoVNA, a low-cost,
open-source instrument, was evaluated. The instrument measures the complex permittivity …
open-source instrument, was evaluated. The instrument measures the complex permittivity …
[HTML][HTML] Testing of a commercial vector network analyzer as low-cost TDR device to measure soil moisture and electrical conductivity
Abstract Time Domain Reflectometry (TDR) is a non-destructive technique to determine the
soil apparent dielectric constant, ε a, the volumetric water content, θ, and bulk electrical …
soil apparent dielectric constant, ε a, the volumetric water content, θ, and bulk electrical …
Application of a monopole antenna probe with an optimized flange diameter for TDR soil moisture measurement
J Majcher, M Kafarski, A Wilczek, A Woszczyk… - Sensors, 2020 - mdpi.com
Soil volumetric water content (θ) is a parameter describing one of the most important factors
conditioning proper plant growth. Monitoring soil moisture is of particular importance in the …
conditioning proper plant growth. Monitoring soil moisture is of particular importance in the …
Evaluation of a prototype variable frequency mode soil moisture and EC probe for its final development
H Miyamoto, N Masuda, H Yuta, MA Mojid - Irrigation and Drainage - Wiley Online Library
A prototype dielectric probe developed by the Daiki Rika Kogyo Co., Ltd, Japan, was
evaluated by controlled laboratory experiments. The probe simultaneously measures the …
evaluated by controlled laboratory experiments. The probe simultaneously measures the …
RF/Microwave Instruments Evolution: From Professional Hardware Into Amateur Kit and Software-Defined Radio
This chapter describes the evolution of RF/microwave instruments within two decades. The
described RF/microwave instruments focus more on low-cost amateur RF signal sources …
described RF/microwave instruments focus more on low-cost amateur RF signal sources …