Multi-mode radio frequency network system

An apparatus for communicating in both narrowband and wideband frequency ranges with other types of communication devices over a multi-mode radio frequency network, said network having a network access controller that provides periodic beacon signals including a synchronous communication period and asynchronous communication period, comprising:

• a receive section adapted to receive radio frequency (RF) signals and having a downconversion mixer to mix the RF signals with a frequency-shifted carrier signal to downconvert the RF signals to intermediate (IF) signals;
• an IF filter section adapted to receive said IF signals and having a wideband bandpass filter and a narrowband bandpass filter that are alternatively coupled to said IF signals to provide filtered IF signals;
• a demodulation section adapted to receive said filtered IF signals and recover wideband and narrowband receive signals therefrom;
• a synthesizer section adapted to generate said frequency-shifted carrier for said receive section, said frequency-shifted carrier being further modulated by wideband and narrowband transmit data signals to provide modulated transmit signals;
• and
• a transmit section adapted to transmit said modulated transmit signals,
• wherein said apparatus communicates with said other types of communication devices during respective ones of said synchronous and asynchronous communication periods.

An apparatus for communicating in both narrowband and wideband frequency ranges with other types of communication devices over a multi-mode radio frequency network, said network having a network access controller that provides periodic beacon signals including a synchronous communication period and asynchronous communication period, comprising:

• a receive section adapted to receive radio frequency (RF) signals and having a downconversion mixer to mix the RF signals with a carrier signal to downconvert the RF signals to intermediate frequency (IF) signals;
• a demodulation section adapted to receive said filtered IF signals and provide in-phase and quadrature receive data signals therefrom;
• a synthesizer section adapted to generate said carrier for said receive section, said carrier being further modulated by in-phase and quadrature transmit data signals;
• a transmit section adapted to transmit said modulated transmit signals;
• and
• a control section adapted to control switching between wideband and narrowband modes of said apparatus, wherein said in-phase and quadrature receive signals comprise wideband data in said wideband mode of the apparatus, and said in-phase receive signals comprising narrowband data in said narrowband mode of the apparatus,
• wherein said apparatus communicates with said other types of communication devices during respective ones of said synchronous and asynchronous communication periods.