English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

The importance of wireless sensors in medical systems, automotive applications, and environmental monitoring is growing continuously. A sensor node converts physical values such as pressure, temperature, or mechanical stress to digital values. The wireless interface connects it to a base station or a network for further data processing. Most of these products are required to be light, cheap, long lived, and maintenance free. Remote powering of transponder tags is a key technology to meet these demands, because it obviates the need for a battery. Near field systems usually operate in the low frequency range, typically between the 133 kHz (LF) and the 13.56 MHz (HF) ISM bands. While LF and HF systems operate in the magnetic near field via inductive coupling between two coils, UHF systems use electromagnetic waves in the far field of the base station. The range of the available inductive systems is typically limited to less than one meter, which motivates the use of far field energy transmission at ultra high frequencies. This chapter presents the design of a passive long range transponder with temperature sensor. The system is shown in figure 1.

UHF Power Transmission for Passive Sensor Transponders