Dual band mobile station employing cross-connected transmitter and receiver circuits

Claim 2

A transceiver as set forth in claim 1, wherein said first and second circuit packages are integrated circuit packages.

Claim 3

A transceiver as set forth in claim 1, wherein said first and second circuit packages are hybrid circuit packages employing at least one of thick film or thin film interconnects.

Claim 4

A transceiver as set forth in any preceding claim, further comprising: a first local oscillator (LO1) for use with the first frequency band; a second local oscillator (LO2) for use with the second frequency band; and means (38) for switchably coupling an output of either the first local oscillator or the second local oscillator to the first and second circuit packages.

Claim 5

A transceiver as set forth in any preceding claim, further comprising: a first duplexer (15a) for coupling said first receiver and said first transmitter to said at least one antenna; and a second duplexer (15b) for coupling said second receiver and said second transmitter to said at least one antenna.

Claim 6

A transceiver as set forth in any preceding claim, further comprising: a first switch means (60a) for selectively applying operating power to only one of said first receiver and said second receiver; and a second switch (60b) means for selectively applying operating power to only one of said first transmitter and said second transmitter.

Claim 7

A transceiver as claimed in any preceding claim, wherein the first and second receivers amplify and down-convert RF signals and the first and second transmitters up-convert and amplify RF signals.

Claim 8

A transceiver as claimed in claim 7, wherein: the first receiver amplifies RF signals, within a first frequency band (Band1), and outputs a Band1 first intermediate frequency (IF1); the second receiver amplifies RF signals, within a second frequency band (Band2), and outputs a Band2 first intermediate frequency (IF2); the first transmitter amplifies RF signals and outputs a Band1 transmitted frequency (f TX1 ); and the second transmitter amplifies RF signals and outputs a Band2 transmitted frequency (f TX2 ),

Claim 9

A transceiver, comprising: at least one antenna (12, 12a, 12b) for transmitting and receiving RF signals within at least two frequency bands; a first local oscillator (LO1) for use with a first frequency band (Band1); a second local oscillator (LO2) for use with a second frequency band (Band2); a first receiver (30, 34) having an input coupled to said at least one antenna for amplifying and down-converting RF signals, within Band1, to a Band1 first intermediate frequency (IF 1), the first receiver being switchably coupled to an output of LO1 for outputting IF1 to be a difference frequency between the frequency of Band1 and the frequency of LO1; a second receiver (30a, 34a) having an input coupled to said at least one antenna for amplifying and down-converting RF signals, within Band2, to a Band2 first intermediate frequency (IF2), the second receiver being switchably coupled to an output of LO2 for outputting IF2 to be a difference frequency between the frequency of Band2 and the frequency of LO2; a first transmitter (44, 46, 48) having an output coupled to said at least one antenna for up-converting and amplifying RF signals, within Band1, to a Band1 transmitted frequency (f TX1 ), the first transmitter being switchably coupled to the output of LO1 for outputting f TX1 to be centered on the frequency of LO1; and a second transmitter (44a, 46a, 48a) having an output coupled to said at least one antenna for up-converting and amplifying RF signals, within Band2, to a Band2 transmitted frequency (f TX2 ), the first transmitter being switchably coupled to the output of LO2 for outputting f TX2 to be centered on the frequency of LO2; wherein said first receiver and said second transmitter are disposed within a first integrated circuit, and said second receiver and said first transmitter are disposed within a second integrated circuit.

Claim 10

A transceiver comprising: at least one antenna for transmitting and receiving RF signals within at least two frequency bands; a first receiver having an input coupled to said at least one antenna for amplifying RF signals, within a first frequency band (Band1), and for outputting a Band1 first intermediate frequency (IF1); a second receiver having an input coupled to said at least one antenna for amplifying RF signals, within a second frequency band (Band2), and for outputting a Band2 first intermediate frequency (IF2); a first transmitter having an output coupled to said at least one antenna for amplifying RF signals and for outputting a Band1 transmitted frequency (f TX1 ); and a second transmitter having an output coupled to said at least one antenna for amplifying RF signals and for outputting a Band2 transmitted frequency (f TX2 ); wherein at least a portion of said first receiver and said second transmitter are disposed within a first integrated circuit, and at least a portion of said second receiver and said first transmitter are disposed within a second integrated circuit.

Claim 11

A multi-mode radiotelephone comprising a transceiver as claimed in any preceding claim.

Claim 12

A multi-mode mobile station comprising a transceiver as claimed in any of claims 1 to 10.