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US 9,313,733 B2Granted
Repeater device for reducing the electromagnetic radiation transmitted from cellular phone antennas and extending phone battery life
AssigneeGolba LLC
InventorsSina Moshfeghi, Mehran Moshfeghi
Life of this patent
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Abstract
A cellular communication system and method is described where a low-cost repeater is used to reduce the transmit power of a cell phone. The cell phone transmits a low-power modulated carrier signal to a nearby repeater. The repeater amplifies the signal and transmits it to a cellular base-station. The reduction of cell phone transmit power lowers the exposure of humans to RF radiation and increases the battery life of the cell phone.
Claims48
A communication system comprising:
- a mobile device;
- and
- a repeater;
- the mobile device comprising:
- a transmitter configured to:
- transmit low power short-range modulated signals to the repeater in lieu of directly sending said high power long-range modulated signals to the cellular base station, wherein the mobile device is configured to transmit said low power short-range modulated signals to the repeater at a first power level at least 10 times lower than a second power level required to transmit said high power long-range signals directly from the mobile device to the cellular based station;
- and
- the repeater comprising:
- a receive antenna configured to receive said low power short-range modulated signals from the mobile device;
- a power amplifier configured to amplify said low power short-range modulated signals received from the mobile device to said second power level;
- a transmit antenna configured to transmit high power long-range modulated signals at the second power level to the cellular base station;
- and
- an adjustable clip configured to attach to a person's body or clothing to maintain a predetermined minimum distance between the repeater and the person's body.
10 more elements
A method of communicating modulated radio frequency (RF) signals from a mobile device to a cellular base station using a repeater, the method comprising:
- transmitting the modulated RF signals from the mobile device to the repeater using low power short-range modulated signals, the repeater comprising an adjustable clip to attach to a person's body or clothing to maintain a predetermined minimum distance between the repeater and the person's body, the low power short-range modulated signals transmitted at a first power level at least 10 times lower than a second power level required to transmit high power long-range signals directly from the mobile device to the cellular based station;
- receiving the low power short-range modulated signals at the repeater;
- amplifying the received low power short-range modulated signals at the repeater to the second power level;
- and
- transmitting high power long-range modulated signals at the second power level from the repeater to the cellular base station.
2 more elements
Dependencies are inferred from the claim text.