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US 2012/0069881 A1Published application
Broadband power amplifier
AssigneeSony Ericsson Mobile Communication AB
InventorsFilip SKARP, Olof ZANDER
Life of this patent
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Abstract
The present invention relates to a power amplifier unit (30, 40, 50, 60a-60d, 70) comprising a power amplifier element (31, 41, 51, 71) and a matching unit (32, 42, 52, 72). The unit comprises an impedance matched MicroElectroMechanicalSystem (MEMS) switch element (33, 43, 53, 73) between said power amplifier element (31, 41, 51, 71) and said matching unit (32, 42, 52, 72).
Claims8
A power amplifier unit comprising:
- a. a power amplifier element,
- b. a matching unit,
- c. an impedance matched MicroElectroMechanicalSystem (MEMS) switch element between said power amplifier element and said matching unit, and
- d. a Phase Locked Loop (PLL) arranged at input of said power amplifier element and connected to said MEMS switch element for providing switching instructions.
1 more element
A communication terminal comprising:
- a. a power amplifier unit, comprising:
- i. an amplification stage, a matching stage,
- ii. an antenna connected to the power amplifier unit,
- iii. an impedance matched MEMS Switch stage (73) between said power amplifier stage and matching stage, and
- iv. a Power Locked Loop (74) connected to said MEMS Switch.
2 more elements
A method of amplifying a radio signal comprising:
- a. providing the signal to power amplifier,
- b. switching by an impedance matched MEMS switch, based on the frequency of the radio signal detected by a Power Locked Loop connected to said MEMS Switch to a suitable matching network, and
- c. outputting the amplified signal.
Dependencies are inferred from the claim text.