| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high density wireless system. <P>SOLUTION: There are provided a method and apparatus for communicating within a wireless microphone system having a plurality of audio channels. The method comprises the steps of: dividing a small block of radio frequency spectrum associated with a single television broadcast channel into a plurality of at least 20 contiguous subchannels that are also contiguous with the boundaries of the television broadcast channel where each of the subchannels is less than 75 kHz; transmitting an audio signal from a microphone transmitter on one the plurality of subchannels through a transmitter with a radio frequency isolator or other means for suppressing intermodulation energy coupled to an antenna, the radio frequency isolator having a bandwidth no larger than any one of the plurality of divided subchannels; and receiving the audio signal through a microphone receiver. <P>COPYRIGHT: (C)2012,JPO&INPIT |
