SYSTEM AND METHOD FOR RADIO OPERATION IN UMTS BANDS I AND IV UTILIZING A SINGLE RECEIVING PORT
First Claim
1. A front-end circuit for a multi-band wireless transceiver, the front-end circuit comprising:
- a diplexer comprising;
a common port to be coupled to an antenna;
a lower band port coupled to the common port by a low pass filter;
an upper band port coupled to the common port by a high pass filter; and
the diplexer for receiving, at the lower band port, a first band modulated carrier from a first transmitter port of the transceiver;
a duplexer including;
a common port coupled to the upper band port of the diplexer;
a transmit port coupled to the common port by a low band pass filter;
a receive port coupled to the common port by a high band pass filter and to be coupled to a receiving port of the transceiver; and
the duplexer for receiving, at the transmit port, a second band modulated carrier from a second transmitter port of the transceiver.
1 Assignment
0 Petitions
Accused Products
Abstract
A portable electronic device comprises a multi-band wireless transceiver for communication with a remote device. The portable electronic device comprises a transceiver: i) generating a first band modulated carrier at a first transmitter port; ii) generating a second band modulated carrier at a second transmitter port; and iii) including a low noise amplifier receiving port. A front-end circuit couples the transceiver to an antenna. The front-end circuit includes a first band modulated carrier transmission signal path from the first transmitter port to the antenna comprising: i) a coupling of a first band modulated carrier from the first transmitter port of the transceiver to a low pass port of a diplexer; ii) the diplexer comprising a low pass filter coupling the first band modulated carrier from the low pass port of the diplexer to a common port of the diplexer; and iii) a coupling of the first band modulated carrier from the common port of the diplexer to the antenna. A second band modulated carrier transmission signal path from the second transmitter port to the antenna comprises: i) a coupling of the second band modulated carrier from the second transmitter port of the transceiver to a transmit port of a duplexer; ii) the duplexer comprising a low band pass filter coupling the second band modulated carrier from the transmit port of the duplexer to a common port of the duplexer; iii) a coupling of the second band modulated carrier from the common port of the duplexer to a high pass port of the diplexer; iv) the diplexer comprising a high pass filter coupling the second band modulated carrier from the high pass port of the diplexer to the common port of the diplexer; and v) a coupling of the second band modulated carrier from the common port of the diplexer to the antenna. A modulated carrier received signal path from the antenna to the receiving port comprises: i) a coupling of a modulated carrier from the antenna to the common port of the diplexer; ii) the high pass filter of the diplexer coupling the modulated carrier from the common port to the high pass port of the diplexer; iii) a coupling of the modulated carrier from the high pass port of the diplexer to the common port of the duplexer; iv) the duplexer comprising a high band pass filter coupling the modulated carrier from the common port of the duplexer to a receive port of the duplexer while attenuating the second band modulated carrier; and v) a coupling for the modulated carrier from the receive port of the duplexer to the receiving port of the transceiver.
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Citations
18 Claims
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1. A front-end circuit for a multi-band wireless transceiver, the front-end circuit comprising:
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a diplexer comprising; a common port to be coupled to an antenna; a lower band port coupled to the common port by a low pass filter; an upper band port coupled to the common port by a high pass filter; and the diplexer for receiving, at the lower band port, a first band modulated carrier from a first transmitter port of the transceiver; a duplexer including; a common port coupled to the upper band port of the diplexer; a transmit port coupled to the common port by a low band pass filter; a receive port coupled to the common port by a high band pass filter and to be coupled to a receiving port of the transceiver; and the duplexer for receiving, at the transmit port, a second band modulated carrier from a second transmitter port of the transceiver. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A front-end circuit for a multi-band wireless receiver, the front-end circuit comprising:
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a first band modulated carrier transmission signal path from a first transmitter port of a transceiver to an antenna, the first modulated carrier transmission signal path comprising; a coupling of a first band modulated carrier from the first transmitter port of the transceiver to a low pass port of a diplexer; the diplexer comprising a low pass filter coupling the first band modulated carrier from the low pass port of the diplexer to a common port of the diplexer; and a coupling of the first band modulated carrier from the common port of the diplexer to the antenna; a second band modulated carrier transmission signal path from a second transmitter port of the transceiver to the antenna, the second band modulated carrier transmission signal path comprising; a coupling of the second band modulated carrier from the second transmitter port of the transceiver to a transmit port of a duplexer; the duplexer comprising a low band pass filter coupling the second band modulated carrier from the transmit port of the duplexer to a common port of the duplexer; a coupling of the second band modulated carrier from the common port of the duplexer to a high pass port of the diplexer the diplexer comprising a high pass filter coupling the second band modulated carrier from the high pass port of the diplexer to the common port of the diplexer; and a coupling of the second band modulated carrier from the common port of the diplexer to the antenna; and a modulated carrier received signal path from the antenna to a receiving port of the transceiver, the modulated carrier received signal path comprising; a coupling of a modulated carrier from the antenna to the common port of the diplexer; the high pass filter of the diplexer coupling the modulated carrier from the common port to the high pass port of the diplexer; a coupling of the modulated carrier from the high pass port of the diplexer to the common port of the duplexer; the duplexer comprising a high band pass filter coupling the modulated carrier from the common port of the duplexer to a receive port of the duplexer while attenuating the second band modulated carrier; and a coupling for the modulated carrier from the receive port of the duplexer to the receiving port of the transceiver. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A portable electronic device comprising a multi-band wireless transceiver for communication with a remote device, the portable electronic device comprising:
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a transceiver, the transceiver; generating a first band modulated carrier at a first transmitter port; generating a second band modulated carrier at a second transmitter port; and including a low noise amplifier receiving port; an antenna; and a front end circuit coupled between the transceiver and the antenna, the front end circuit comprising; a first band modulated carrier transmission signal path from the first transmitter port of the transceiver to the antenna, the first modulated carrier transmission signal path comprising; a coupling of a first band modulated carrier from the first transmitter port of the transceiver to a low pass port of a diplexer; the diplexer comprising a low pass filter coupling the first band modulated carrier from the low pass port of the diplexer to a common port of the diplexer; and a coupling of the first band modulated carrier from the common port of the diplexer to the antenna; a second band modulated carrier transmission signal path from a second transmitter port of the transceiver to the antenna, the second band modulated carrier transmission signal path comprising; a coupling of the second band modulated carrier from the second transmitter port of the transceiver to a transmit port of a duplexer; the duplexer comprising a low band pass filter coupling the second band modulated carrier from the transmit port of the duplexer to a common port of the duplexer; a coupling of the second band modulated carrier from the common port of the duplexer to a high pass port of the diplexer the diplexer comprising a high pass filter coupling the second band modulated carrier from the high pass port of the diplexer to the common port of the diplexer; and a coupling of the second band modulated carrier from the common port of the diplexer to the antenna; and a modulated carrier received signal path from the antenna to a receiving port of the transceiver, the modulated carrier received signal path comprising a coupling of a modulated carrier from the antenna to the common port of the diplexer; the high pass filter of the diplexer coupling the modulated carrier from the common port to the high pass port of the diplexer; a coupling of the modulated carrier from the high pass port of the diplexer to the common port of the duplexer; the duplexer comprising a high band pass filter coupling the modulated carrier from the common port of the duplexer to a receive port of the duplexer while attenuating the second band modulated carrier; and a coupling for the modulated carrier from the receive port of the duplexer to the receiving port of the transceiver. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification