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US 11,444,642 B2Granted
Mobile terminal for expanding bandwidth of LTE B41 frequency band, and method thereof
AssigneeTCL Commanication (Ningbo) Co., Ltd.
InventorWen Wang
Life of this patent
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Abstract
A mobile terminal and a method for expanding a bandwidth of a B41 frequency band in LTE are disclosed. The mobile includes a multimode multiband power amplifier, a duplexer, a first surface acoustic wave (SAW) filter, a selection module, and a radio frequency transmission module. When the multimode multiband power amplifier identifies that the initial signal is a signal in the B41 frequency band, the multimode multiband power amplifier determines a frequency band range of the signal in the B41 frequency band and outputs a transmitting signal in the B41 frequency band.
Claims20
A mobile terminal for expanding a bandwidth of a B41 frequency band in LTE, comprising:
- a radio frequency transceiver configured to output an initial signal which requires being transmitted;
- a multimode multiband power amplifier configured to amplify a power of the initial signal and identify a type of the initial signal;
- a duplexer;
- a first surface acoustic wave (SAW) filter;
- a selection module;
- and
- a radio frequency transmission module,
- wherein when the multimode multiband power amplifier identifies that the initial signal is a signal in the B41 frequency band, the multimode multiband power amplifier determines a frequency band range of the signal in the B41 frequency band and outputs a transmitting signal in the B41 frequency band;
- the transmitting signal belonging to a first frequency band range in the B41 frequency band and outputted from the multimode multiband power amplifier is transmitted to the radio frequency transmission module via the duplexer and transmitted by the radio frequency transmission module;
- the transmitting signal belonging to a second frequency band range in the B41 frequency band and outputted from the multimode multiband power amplifier is transmitted to the radio frequency transmission module via the first SAW filter and transmitted by the radio frequency transmission module;
- and
- the transmitting signal belonging to a third frequency band range in the B41 frequency band and outputted from the multimode multiband power amplifier is switched to the duplexer by the selection module, transmitted to the radio frequency transmission module, and transmitted by the radio frequency transmission module;
- wherein the selection module is a single pole double throw switch, a connection terminal of the single pole double throw switch is connected to a first interface of the duplexer, a first transmission terminal of the single pole double throw switch is connected to a pin HB3 of the radio frequency transceiver, a second transmission terminal of the single pole double throw switch is connected to a thirty-ninth pin of the multimode multiband power amplifier, the first interface of the duplexer is configured to receive the transmitting signal in the third frequency band range in the B41 frequency band, and the thirty-ninth pin of the multimode multiband power amplifier is configured to output the transmitting signal in the third frequency band range in the B41 frequency band and receive a signal in the B41 frequency band.
10 more elements
A mobile terminal for expanding a bandwidth of a B41 frequency band in LTE, comprising:
- a multimode multiband power amplifier configured to identify a type of an initial signal inputted to the multimode multiband power amplifier;
- a duplexer;
- a first surface acoustic wave (SAW) filter;
- a selection module;
- and
- a radio frequency transmission module,
- wherein when the multimode multiband power amplifier identifies that the initial signal is a signal in the B41 frequency band, the multimode multiband power amplifier determines a frequency band range of the signal in the B41 frequency band and outputs a transmitting signal in the B41 frequency band;
- the transmitting signal belonging to a first frequency band range in the B41 frequency band and outputted from the multimode multiband power amplifier is transmitted to the radio frequency transmission module via the duplexer;
- the transmitting signal belonging to a second frequency band range in the B41 frequency band and outputted from the multimode multiband power amplifier is transmitted to the radio frequency transmission module via the first SAW filter and transmitted by the radio frequency transmission module;
- and
- the transmitting signal belonging to a third frequency band range in the B41 frequency band and outputted from the multimode multiband power amplifier is switched to the duplexer by the selection module and transmitted to the radio frequency transmission module;
- wherein the selection module is a single pole double throw switch, a connection terminal of the single pole double throw switch is connected to a first interface of the duplexer, a first transmission terminal of the single pole double throw switch is connected to a pin HB3 of a radio frequency transceiver, a second transmission terminal of the single pole double throw switch is connected to a thirty-ninth pin of the multimode multiband power amplifier, the first interface of the duplexer is configured to receive the transmitting signal in the third frequency band range in the B41 frequency band, and the thirty-ninth pin of the multimode multiband power amplifier is configured to output the transmitting signal in the third frequency band range in the B41 frequency band and receive a signal in the B41 frequency band.
9 more elements
A method for expanding a bandwidth of a B41 frequency band in LTE, comprising:
- when a multimode multiband power amplifier identifies that an initial signal inputted to the multimode multiband power amplifier is a signal in the B41 frequency band, a frequency band range of the signal in the B41 frequency band is determined and a transmitting signal in the B41 frequency band is outputted;
- transmitting the transmitting signal belonging to a first frequency band range in the B41 frequency band and outputted from the multimode multiband power amplifier to a radio frequency transmission module via a duplexer;
- transmitting the transmitting signal belonging to a second frequency band range in the B41 frequency band and outputted from the multimode multiband power amplifier to the radio frequency transmission module via a first surface acoustic wave (SAW) filter;
- and
- switching, by a selection module, the transmitting signal belonging to a third frequency band range in the B41 frequency band and outputted from the multimode multiband power amplifier to the duplexer;
- wherein the selection module is a single pole double throw switch, a connection terminal of the single pole double throw switch is connected to a first interface of the duplexer, a first transmission terminal of the single pole double throw switch is connected to a pin HB3 of a radio frequency transceiver, a second transmission terminal of the single pole double throw switch is connected to a thirty-ninth pin of the multimode multiband power amplifier, the first interface of the duplexer is configured to receive the transmitting signal in the third frequency band range in the B41 frequency band, and the thirty-ninth pin of the multimode multiband power amplifier is configured to output the transmitting signal in the third frequency band range in the B41 frequency band and receive a signal in the B41 frequency band.
3 more elements
Dependencies are inferred from the claim text.