Automatic antenna-switching apparatus and system

An automatic antenna-switching system, comprising:

• an RF input port connected to a multiband communications device receives RF energy from said multiband communication device, said RF energy having a given frequency;
• said RF input port is connected to an RF sensing coil and a plurality of output antenna connectors, said plurality of output antenna connectors being coupled to a plurality of output antennas, each of said antennas having a plurality of antenna characteristics;
• said RF sensing coil provides said RF energy to a means for RF sensing;
• said RF sensing means, having a means for frequency counting, sends a frequency count output to a means for antenna port selection;
• said antenna port selection means, having a means for frequency comparison, compares said frequency count output with said plurality of antenna characteristics to generate an antenna selection output;
• said RF input port, said RF tuning coil, said RF sensing means, said antenna port selection means and said plurality of output antenna connectors being housed in a metal housing;
• said antenna port selection means provides an antenna selection output selecting one of a plurality of RF output connectors, said one of the plurality of RF output connectors activating a corresponding one of said plurality of output antennas to transmit said RF energy;
• and
• said system reduces an unwanted radio frequency interference by-product caused by signal leakage.

HA method of automatically switching antennas for a multiband communications device to different frequencies, comprising the steps of:

• connecting an RF input port to said communications device;
• receiving RF energy from said communications device, said RF energy having a given frequency;
• forming an RF sensing coil;
• connecting said RF input port to said RF sensing coil and a plurality of output antenna connectors;
• connecting said plurality of output antenna connectors to a plurality of output antennas, each of said antennas having a plurality of antenna characteristics;
• forming a means for RF sensing to include a means for frequency counting;
• forming a means for antenna port selection to include a means for frequency comparison;
• placing said RF input port, said RF sensing coil, said RF sensing means, said antenna port selection means and said plurality of output antenna connectors into a metal housing;
• providing said RF energy from said RF sensing coil to said RF sensing means;
• sending a frequency count output from said RF sensing means to said means for antenna port selection;
• comparing said frequency count output with said plurality of antenna characteristics to generate an antenna selection output;
• providing said antenna selection output from said antenna port selection means to a selected one of said plurality of RF output connectors;
• switching on a corresponding one of said output antennas that corresponds to said selected RF output connector;
• transmitting said RF energy to said corresponding one;
• connecting a multiband communications device to connect to said RF input port;
• and
• reducing an unwanted radio frequency interference by-product caused by signal leakage.