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US 9,544,010 B2Granted
RF front-end module
AssigneeAiroha Technology Corp.
InventorsHeng-Chih Lin, Chien-Kuang Lee
Life of this patent
Estimating the term…
Abstract
An RF front-end module includes a transmitting/receiving terminal, a control unit, a first transmitting block and a second transmitting block. The first transmitting block and the second transmitting block connect the transmitting/receiving terminal and the control unit. The control unit controls on or off status of the first transmitting block and the second transmitting block. Thus, the first transmitting block and the second transmitting block can send a signal to the transmitting/receiving terminal directly without pass through any switch unit, avoiding extra signal loss on switch unit.
Claims9
An RF front-end module, comprising:
- a transmitting/receiving terminal;
- a plurality of transmitting blocks connected to said transmitting/receiving terminal;
- a plurality of impedance units electrically connected to said transmitting/receiving terminal or said transmitting blocks;
- a plurality of impedance switching units respectively electrically connected to said impedance units for switching the connection status between the respective said impedance units and the respective said transmitting blocks or said transmitting/receiving terminal;
- a control unit connected with said transmitting blocks and adapted to turn on or turn off said transmitting blocks;
- a switch unit connected to said transmitting/receiving terminal;
- a plurality of receiving paths connected to said transmitting/receiving terminal through said switch unit;
- and
- a plurality of transmitting paths connected between respective ones of said transmitting blocks and said transmitting/receiving terminal;
- wherein at least one of said transmitting paths is connected to said transmitting/receiving terminal without passing through said switch unit,
- wherein signals received from said transmitting/receiving terminal pass through said switch unit, and
- wherein each said transmitting block includes at least one matching circuit, and at least one impedance unit and at least one impedance switching unit are disposed in a switched path connected in parallel across the input and output of one of said matching circuits.
9 more elements
An RF front-end module, comprising:
- a transmitting/receiving terminal;
- a plurality of transmitting blocks connected to said transmitting/receiving terminal;
- a control unit connected to said transmitting blocks and adapted to turn on or turn off said transmitting blocks;
- a plurality of receiving paths connected to said transmitting/receiving terminal;
- a plurality of transmitting paths connected between respective ones of said transmitting blocks and said transmitting/receiving terminal;
- a plurality of reception impedance units respectively electrically connected to said transmitting/receiving terminal or said receiving paths;
- a plurality of transmission impedance units respectively electrically connected to said transmitting/receiving terminal or said transmitting paths;
- a plurality of reception impedance switching units respectively electrically connected to said reception impedance units, and adapted for switching the connection status between said reception impedance units and said receiving paths or said transmitting/receiving terminal;
- and
- a plurality of transmission impedance switching units respectively electrically connected to said transmission impedance units, and adapted for switching the connection status between said impedance units and said transmitting paths or said transmitting/receiving terminal;
- wherein each said transmitting block includes at least one amplifier and at least one matching circuit, and at least one transmission impedance unit and at least one transmission impedance switching unit are disposed in a switched path connected in parallel across the input and output of one of said matching circuits,
- wherein at least one of said transmitting paths is connected to said transmitting/receiving terminal without passing through any of said transmission impedance switching units and any of said transmission impedance units, or at least one of said receiving paths is connected to said transmitting/receiving terminal without passing through any of said reception impedance switching units and any of said reception impedance units, and
- wherein at least one transmission impedance unit is electrically connected through one of said transmission impedance switching units to said transmitting/receiving terminal or one of said transmitting blocks.
10 more elements
Dependencies are inferred from the claim text.