External mounted amplifiers with active interference cancelation using diversity antennas
First Claim
1. A system, comprising:
- a first external mounted amplifier having a first low-noise amplifier coupled to a first antenna, the first low-noise amplifier operable to receive a first signal from the first antenna;
a second external mounted amplifier having a second low-noise amplifier coupled to a second antenna, the second low-noise amplifier operable to receive a second signal from the second antenna, wherein the second low-noise amplifier amplifies a second input signal derived from the second signal;
a first splitter coupled between the first antenna and the first low-noise amplifier, the first splitter operable to derive a first sampling signal from the first signal;
a first phase shifter coupled to the first splitter, the first phase shifter operable to shift the phase of the first sampling signal to create a second cancelation signal; and
a second mixer coupled to the first phase shifter, the second mixer operable to mix a second input signal derived from the second signal with the second cancelation signal to create a second output signal.
12 Assignments
0 Petitions
Accused Products
Abstract
A system includes a first external mounted amplifier (EMA) having a first low-noise amplifier (LNA) coupled to a first antenna, a second EMA having a second LNA coupled to a second antenna, a first splitter coupled between the first antenna and the first LNA, a first phase shifter coupled to the first splitter, and a second mixer coupled to the first phase shifter. The first LNA is operable to receive a first input signal from first antenna. The second LNA is operable to receive a second input signal from second antenna. The first splitter is operable to derive a first sampling signal from first signal. The first phase shifter is operable to shift the phase of first sampling signal to create a second cancelation signal. The second mixer is operable to mix a second input signal derived from second signal with second cancelation signal to create a second output signal.
23 Citations
38 Claims
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1. A system, comprising:
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a first external mounted amplifier having a first low-noise amplifier coupled to a first antenna, the first low-noise amplifier operable to receive a first signal from the first antenna; a second external mounted amplifier having a second low-noise amplifier coupled to a second antenna, the second low-noise amplifier operable to receive a second signal from the second antenna, wherein the second low-noise amplifier amplifies a second input signal derived from the second signal; a first splitter coupled between the first antenna and the first low-noise amplifier, the first splitter operable to derive a first sampling signal from the first signal; a first phase shifter coupled to the first splitter, the first phase shifter operable to shift the phase of the first sampling signal to create a second cancelation signal; and a second mixer coupled to the first phase shifter, the second mixer operable to mix a second input signal derived from the second signal with the second cancelation signal to create a second output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method, comprising:
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receiving a first signal from a first antenna coupled to a first low-noise amplifier of a first external mounted amplifier; receiving a second signal from a second antenna coupled to a second low-noise amplifier of a second external mounted amplifier; phase shifting a first sampling signal derived from the first signal to create a second cancelation signal; amplifying a second input signal derived from the second signal; and mixing the second input signal with the second cancelation signal to create a second output signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A system, comprising:
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a first external mounted amplifier having a first low-noise amplifier coupled to a first antenna, the first low-noise amplifier operable to receive a first signal from the first antenna; a second external mounted amplifier having a second low-noise amplifier coupled to a second antenna, the second low-noise amplifier operable to receive a second signal from the second antenna; wherein the second external mounted amplifier is operable to mix a second input signal derived from the second signal with a first cancelation signal derived from the first signal to create a second output signal. - View Dependent Claims (28, 29, 30, 31, 32)
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33. A system, comprising:
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a first external mounted amplifier having a first low-noise amplifier coupled to a first antenna, the first low-noise amplifier operable to receive a first signal from the first antenna; a second external mounted amplifier having a second low-noise amplifier coupled to a second antenna, the second low-noise amplifier operable to receive a second signal from the second antenna; wherein the second external mounted amplifier is operable to mix a second input signal derived from the second signal with a first cancelation signal derived from the first signal to create a second output signal; and a base station coupled to an output of the second external mounted amplifier, the base station operable to receive the second output signal from the second external mounted amplifier. - View Dependent Claims (34, 35, 36, 37, 38)
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Specification