Front-end arrangements for multiband multimode communication engines
First Claim
1. A receive front-end module for use in conjunction with a transceive front-end module in a multi-band communication device, the communication device having at least a first antenna and a second antenna electrically separated from the first antenna, wherein the transceive front-end module comprises a plurality of signal paths operatively connected to the first antenna for transmitting signals in at least a first transmit frequency band and a different second transmit frequency band, said receive front-end module comprising:
- a feed point, operatively connected to the second antenna for receiving communication signals in the communication device; and
a plurality of receive signal paths, operatively connected to the feed point for receiving communication signals in a plurality of frequency bands, wherein said plurality of frequency bands includes at leasta first receive frequency band, which is partially overlapped with the first transmit frequency band in the transceive front-end module, anda second receive frequency band, which is spaced from the first receive frequency band in frequency.
2 Assignments
0 Petitions
Accused Products
Abstract
A receive front-end module in a multi-band communication device. The communication device comprises a plurality of signal paths for receiving and transmitting communication signals in a plurality of frequency bands in GSM and W-CDMA modes. The signal paths in the receive front-end module are operatively connected to a common feed point, which is connected to one of the RF antennas of the communication device, and the signal paths are selected such that none of the frequency bands for receiving communication signals in the receive front-end module are overlapping. If the communication device also transmits the communication signal in at least one transmit frequency range partially overlapping with one of the frequency bands in the receive front-end module, switching means is provided to at least one of signal paths in the receive front-end module for providing cross-band isolation between the transmitted and received communication signals.
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Citations
32 Claims
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1. A receive front-end module for use in conjunction with a transceive front-end module in a multi-band communication device, the communication device having at least a first antenna and a second antenna electrically separated from the first antenna, wherein the transceive front-end module comprises a plurality of signal paths operatively connected to the first antenna for transmitting signals in at least a first transmit frequency band and a different second transmit frequency band, said receive front-end module comprising:
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a feed point, operatively connected to the second antenna for receiving communication signals in the communication device; and a plurality of receive signal paths, operatively connected to the feed point for receiving communication signals in a plurality of frequency bands, wherein said plurality of frequency bands includes at least a first receive frequency band, which is partially overlapped with the first transmit frequency band in the transceive front-end module, and a second receive frequency band, which is spaced from the first receive frequency band in frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of reducing reception loss in a portable communication device, the communication device having
a first antenna; -
a second antenna electrically separated from the first antenna; a plurality of transmit signal paths for transmitting communication signals in at least a first transmit frequency band and a different second transmit frequency band; a plurality of receive signal paths for receiving communication signals in a plurality of frequency bands, including at least a first receive frequency band, which is partially overlapped with the first transmit frequency band, and a second receive frequency band spaced from the first receive frequency band in frequency, said method comprising the steps of; operatively connected the transmit signal paths to a first antenna; and operatively connected the receive signal paths to the second antenna so that the communication signals in the first transmit signal band and the communication signals in the first receive signal band are conveyed via different antenna. - View Dependent Claims (26, 27, 28, 29, 30)
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31. A portable communication device, comprising:
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at least a first antenna; a second antenna electrically separating from the first antenna; a transceive front-end module comprises a plurality of signal paths operatively connected to the first antenna for transmitting signals in at least a first transmit frequency band and a different second transmit frequency band; and a receive front-end module comprising; a feed point, operatively connected to the second antenna for receiving communication signals in the communication device, and a plurality of receive signal paths, operatively connected to the feed point for receiving communication signals in a plurality of frequency bands, wherein said plurality of frequency bands includes at least a first receive frequency band, which is partially overlapped with the first transmit frequency band in the transceive front-end module, and a second receive frequency band, which is spaced from the first receive frequency band in frequency. - View Dependent Claims (32)
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Specification