The transmitting antenna system includes an active transmit antenna and a tunable passive antenna.
Understanding the Difference Between Active and Passive Antennas
A passive antenna is also provided which is inductively coupled to the rf inductive antenna and configured to generate a second rf field modifying the first rf field.
The Fazup patch contains a passive antenna that interacts with the integrated antenna of the mobile phone.
The passive antenna is configured to transmit a field over at least two frequencies of the plurality of operating frequencies.
You will also need to choose between an active or passive GPS antenna.
The present invention provides a pseudo linear spring constant throughout the range of travel of the cone (12) and voice coil (14), or the sound baffle for a passive radiator.
The transmitter may further include at least one parasitic antenna proximate the transmit antenna and configured to modify a distribution of the generated field.
An exemplary antenna system comprises a ground plane, a receiving antenna disposed above the ground plane and providing an output signal of the antenna system, and a passive antenna disposed below the ground plane.
FAZUP is a thin, sticker patch containing a passive antenna that regulates the emission of electromagnetic radiation from your mobile.
If rental equipment is available, we will send you a system (decoder + antenna) including 15 bib numbers for testing.
An antenna system for global navigation satellite systems includes a ground plane, an active antenna disposed above the ground plane, and a passive antenna disposed below the ground plane.
Slot antenna structures such as a directly fed antenna slot and a parasitic antenna slot may be formed from openings in the metal layer.
In some implementations, a method for boosting RF signals includes wirelessly receiving an RF signal from a transaction terminal at a passive antenna.
In most cases, a passive antenna should be installed with no more than three feet of coaxial cable between it and the GPS unit.
With a passive antenna, all these modules are accessible, although the radar continues to operate at slightly reduced power.
By allowing tuning by way of controlling the impedance of the load patch (27), the antenna arrangement can be made smaller than a corresponding passive antenna operable at the same frequencies.
The method involves using the RF coil as a passive antenna, and performing radiometric measurements of the noise variance of the target within the field of view of the RF coil.
Used in this way, the electrode wall acts as a passive antenna to pick up electromagnetic noise from appliances that are switched on in the room.
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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