Multi-band wireless radiotelephone operative in a plurality of air interface of differing wireless communications systems

A universal wireless radiotelephone communication system;

• comprising:
• a first plurality of wide area coverage base stations, including a radio transceiver apparatus and a radiant and receiving antenna, and operative in a first band of frequencies;
• a second plurality of local area coverage base stations including a radio transceiver apparatus and a radiant and receiving antenna, operative in a second and third band of frequencies with the second band higher in frequency than the first band of frequencies and the third band of frequencies higher in frequency than the second band of frequency;
• the first plurality of wide area coverage base stations and the second plurality of local area coverage base stations all connected to a common land telephone network;
• a personal radiotelephone handset for communicating with the first plurality of wide area coverage base stations and the second plurality of local area coverage base stations;
• including:
• a baseband circuit for processing IF signals for all three bands of RF frequencies;
• first minimized RF circuit means connected to the baseband circuit for generating signals for transmission within the first band of frequencies for transmission to the first plurality of wide area coverage base stations;
• second minimized RF circuit means connected to the baseband circuit through a frequency tripler for generating signals for transmission within the third band of frequencies for transmission to the second plurality of local area base stations;
• and the first and second minimized RF circuit means circuit sharing radio mixers and IF processors in common;
• an antenna whose electrical length is a wavelength of a subharmonic frequency within the first band of frequencies and an integer multiple wavelength of a subharmonic frequency within the third band of frequencies;
• filter circuitry interconnecting the antenna to the first and second RF circuit means;
• and
• including a reject filter to reject the third band frequencies and a RF switch connected to bypass the reject filter.

A universal wireless radiotelephone communication apparatus operative in a first radio telephone communication system including a first base station having a wide area of coverage, transmitting radio signals at a first band of frequencies and in a second radiotelephone communication system including a second base station having a localized area of coverage, transmitting radiotelephone signals at a second band of frequencies higher than said first band of frequencies with an offset of less than twice a frequency contained within said first band;

• the wireless radiotelephone communication apparatus comprising:
• baseband circuitry for processing received radiotelephone signals and signals generated by a user of the radiotelephone communication apparatus;
• a first minimized RF circuit means for generating signals for transmission within the first band of frequencies for transmission to the first base station;
• a second minimized RF circuit means of transmission within a third band of frequencies having a frequency three times a frequency within the first band of frequencies for transmission to the second base station;
• and
• the first and second RF circuit means being connected to the baseband circuitry and each sharing in common radio mixers and IF processors for processing radio signals at the first and third band of frequencies;
• an antenna whose electrical length is a wavelength of a subharmonic frequency within the first band of frequencies and an integral multiple wavelength of the subharmonic frequency within the third band of frequencies;
• filter circuitry interconnecting the antenna to the first and second RF circuit means and including a reject filter to reject the third band of frequencies and a RF switch connected to bypass the reject filter.

A wireless radiotelephone mobile communications apparatus that operates in a first and second wireless air interface,

• the first air interface operating within a first range of frequencies including uplink and downlink frequency bands;
• the second air interface operating within at least a second range of frequencies including uplink and downlink frequency bands, one band being greater than a frequency within the first range of frequencies by an integer multiple;
• comprising:
• radio frequency processing circuitry including
• an antenna having a wavelength defined length to operate within both ranges of frequencies;
• RF/IF conversion circuitry;
• a receive section interconnecting the antenna to the RF/IF conversion circuitry and including a first filtered path for conveying downlink signals at the first and second range of frequencies and including circuitry for rejecting signals at the second range of frequencies, the circuitry for rejecting being controllably switched into the first filtered path;
• a first transmit section interconnecting the antenna to the RF/IF conversion circuitry for conveying uplink signals within the first range of frequencies, and including signal splitting circuitry;
• a second transmit section connected to the antenna and connected to receive uplink signals from the signal splitting circuitry and including signal multiplication circuitry for increasing the frequency of signals received from the splitting circuitry to the uplink band of the second range of frequency;
• and
• the receive section and first and second transmit sections sharing common mixers and IF processors.