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US 9,853,345 B2Granted
Radio frequency splitter
AssigneeSTMicroelectronics S.r.l.
InventorsBaudouin Martineau, Olivier Richard, Frédéric Gianesello
Life of this patent
Estimating the term…
Abstract
A multichannel splitter formed from 1 to 2 splitters. An input terminal of a first 1 to 2 splitter defines an input of the multichannel splitter. The 1 to 2 splitters are electrically series-connected. First respective outputs of the 1 to 2 splitters define output terminals of the multichannel splitter.
Claims21
A multichannel power splitter having an input and a plurality of outputs, the multichannel power splitter comprising:
- a first 1-to-2 power splitter that includes an input terminal that serves as the input of the multichannel power splitter and a first output that serves as a first output of the multichannel power splitter;
- a second 1-to-2 power splitter that includes an input terminal coupled to a second output of the first 1-to-2 power splitter and a first output that serves as a second output of the multichannel power splitter, wherein the frequency of a signal at the second output of the multichannel power splitter is at the same frequency of a signal at the first output of the multichannel power splitter;
- and
- a third 1-to-2 power splitter that includes an input terminal coupled to a second output of the second 1-to-2 power splitter and a first output that serves as a third output of the multichannel power splitter, wherein the frequency of a signal at the third output of the multichannel power splitter is at the same frequency of a signal at the second output of the multichannel power splitter.
1 more element
A radio frequency transmission system comprising:
- a transceiver circuit having a receive input;
- a first 2-to-1 power combiner that includes an output terminal coupled to the receive input of the transceiver circuit and a first input coupled to a first channel;
- a second 2-to-1 power combiner that includes an output terminal coupled to a second input of the first 2-to-1 power combiner and a first input coupled to a second channel, wherein the frequency of a signal at the first input coupled to the first channel is at the same frequency of a signal at the second input of the first 2-to-1 power combiner;
- a third 2-to-1 power combiner that includes an output terminal coupled to a second input of the second 2-to-1 power combiner and a first input coupled to a third channel, wherein the frequency of a signal at the first input coupled to the second channel is at the same frequency of a signal at the second input of the second 2-to-1 power combiner;
- a first 1-to-2 power splitter that includes an input terminal coupled to the transceiver circuit to receive a signal to be transmitted and a first output coupled to the first channel;
- a second 1-to-2 power splitter that includes an input terminal coupled to a second output of the first 1-to-2 power splitter and a first output coupled to the second channel, wherein the frequency of a signal at the first output coupled to the first channel is at the same frequency of a signal at the first output coupled to the second channel;
- and
- a third 1-to-2 power splitter that includes an input terminal coupled to a second output of the second 1-to-2 power splitter and a first output coupled to the third channel, wherein the frequency of a signal at the first output coupled to the second channel is at the same frequency of a signal at the first output coupled to the third channel.
5 more elements
A system comprising:
- a transceiver circuit having a transmission input configured to receive a baseband signal and a transmission output configured to output a modulated signal for transmission, and a receiver input configured to receive a modulated received signal and a receiver output configured to output a base band received signal;
- and
- a multichannel power splitter/combiner coupled to the transceiver circuit, the multichannel power splitter/combiner including n 1-to-2/2-to-1 power splitter/combiner circuits in series, n being an integer greater than 3, wherein the frequency of a signal at each input and output of the multichannel power-splitter is at the same frequency, the multichannel power splitter/combiner comprising:
- a first power splitter/combiner circuit that includes a transmission input terminal that serves as a power splitter input of the multichannel power splitter/combiner, the transmission input terminal of the first power splitter/combiner coupled to the transmission output of the transceiver circuit, an antenna output that serves as a first output of the multichannel power splitter/combiner and is to be coupled to a first antenna, and a transmission output;
- a second power splitter/combiner circuit that includes a transmission input terminal coupled to the transmission output of the first power splitter/combiner circuit, and an antenna output that serves as a second output of the multichannel power splitter/combiner and is to be coupled to a second antenna, and a transmission output;
- a third power splitter/combiner circuit that includes a transmission input terminal coupled to the transmission output of the second power splitter/combiner circuit, an antenna output that serves as a third output of the multichannel power splitter/combiner and is to be coupled to a third antenna, and a transmission output coupled to a succeeding power splitter/combiner circuit in the series;
- and
- an nth power splitter/combiner circuit that includes a transmission input terminal coupled to the transmission output of the preceding intermediate power splitter/combiner in the series and an antenna output that serves as an nth output of the multichannel power splitter/combiner and is to be coupled to an nth antenna.
5 more elements
A multichannel splitter having an input and a plurality of outputs, the multichannel splitter comprising:
- a first 1-to-2 splitter that includes an input terminal that serves as the input of the multichannel splitter and a first output that serves as a first output of the multichannel splitter;
- a second 1-to-2 splitter that includes an input terminal coupled to a second output of the first 1-to-2 splitter and a first output that serves as a second output of the multichannel splitter;
- a third 1-to-2 splitter that includes an input terminal coupled to a second output of the second 1-to-2 splitter and a first output that serves as a third output of the multichannel splitter;
- a first amplifier coupled between the input terminal of the second 1-to-2 splitter and the second output of the first 1-to-2 splitter;
- and
- a second amplifier coupled between the input terminal of the third 1-to-2 splitter and the second output of the second 1-to-2 splitter.
3 more elements
Dependencies are inferred from the claim text.