In a further aspect, a frequency to which a tuned antenna is tuned is shifted to verify whether the antenna is still in tune.
The invention also relates to an antenna assembly including a capacitively loaded antenna.
The antenna configuration comprises a first antenna tuned to a first cell phone operating frequency and a second antenna tuned to a second cell phone operating frequency.
A contactless apparatus for measuring contaminants in a semiconductor specimen (24) includes a tunable microwave generator (26) coupled by a coaxial cable (36) to a tuned narrowband microstrip antenna (38) that defines a through hole (72).
In the operational position, the antenna element and the conductive element form an antenna optimally tuned to the frequency of the wireless network that is less subject to interference by the user.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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