Data transfer method and apparatus having dual frequency operati
Detachable battery pack with a built-in broadband antenna
Detector DC offset compensator
Device for controlling extension and retraction of an antenna
Device for integration between voice and data radio communicatio
Device for mounting an electronic part
Device for shielding a cellular telephone user from electromagne
Device for the exchange of data by electromagnetic waves
Digital mobile radio communication apparatus
Digitally programmable multifunction radio system architecture
Direct conversion RF transceiver with automatic transmit...
Dual band antenna having separate matched inputs for each band
Dual band cellular/PCS transceiver
Dual band notch antenna for portable radiotelephones
Dual mode power amplifier for analog and digital cellular teleph
Dual mode radio communication apparatus having function of selec
Dual mode radio communication apparatus having function of selec
Dual-bandwidth cellular telephone switching apparatus