| Autor: |
Kamran Entesari, Vikram Sekar, Ahmed A. Helmy |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
WAMICON 2013. |
| Popis: |
This paper presents a review of recently reported chemical sensors for dielectric detection at microwave frequencies. The sensors are based on a sensing element exposed to materials under test (MUT) as a part of a VCO inside a frequency synthesizer loop. The permittivity of the MUT is translated into a change in the free running frequency of the VCO and the DC control voltage of the loop which is read out using an Analog-to-Digital converter for further processing. Two different on-board and on-chip prototypes are presented and compared. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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