RADIO RECEPTION CIRCUIT HAVING PLANAR AND LOOP ANTENNAS, AND RADIO DATA COINCIDENCE ANNUNCIATION SYSTEMPROBLEM TO BE SOLVED: To provide a radio reception circuit having an antenna improving sensitivity deficiency and narrow directivity of a loop antenna in the radio reception circuit requiring circuit ...
touch switch (three-level gain adjustable) with a low battery reminder. And the preamplifier adds FMDX and HF switches to switch different positions to achieve better reception when used in different electromagnetic environments (this is a unique function of K-180WLA among all active antennas). ...
This invention relates to loop antenna arrangements and, in particular, to those suitable for inclusion within the cabinet of a television receiver. Conventional television (TV) receivers employ monopole or dipole (i.e. "rabbit ears") antennas for receiving television signals in the lower (54-88...
In this first of perhaps a series of these antenna shootouts, I wanted to compare three portable amplified magnetic loop antennas. When I say “portable” here, I mean broadband antennas that can pack reasonable compactly for travel and that can be set up and broken down easily for use “...
A radiating element 54 provides transmission and reception of electromagnetic energy and may be any one of monopoles, inverted F antennas (IFA), planar inverted F antennas (PIFA), IMD elements, or dipoles, for example. The addition of the capacitor and inductor as reactive components creates ...
VLF Signal Reception Capability of Three Experimental Crossed-Loop Antennas.AntennasVery low frequencyEfficiencySubmarinesRadiofrequencySignalsNo abstract available.Fratianni, S. V.Naval Research Lab.
RADIO RECEPTION CIRCUIT HAVING PLANAR AND LOOP ANTENNAS, AND RADIO DATA COINCIDENCE ANNUNCIATION SYSTEMPROBLEM TO BE SOLVED: To provide a radio reception circuit having an antenna improving sensitivity deficiency and narrow directivity of a loop antenna in the radio reception circuit requiring circuit ...
127to facilitate the transmission and reception of wireless data. Additionally, the receiver126, transmitter127and antenna128may be a single receiver, transmitter and antenna, or may include a plurality of individual receivers, transmitters and antennas, respectively. Transmitter110may be located at a ...