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US 6,807,399 B1Granted
Transmitting/receiving apparatus of repeater system
AssigneeLG Electronics Inc.
InventorJae Hoon Shim
Life of this patent
Estimating the term…
Abstract
A transmitting/receiving apparatus of a repeater system in which a signal received by the receiving apparatus from a base station is amplified to a high-powered transmission signal by the transmitting apparatus so as to be transmitted to a destination, wherein the transmitting apparatus varies a phase and a magnitude of the transmission signal and applies a compensation signal to the receiving apparatus, and the receiving apparatus adds the inputted compensation signal and a signal inputted through a receiving antenna and removes an unnecessary frequency component caused due to interference of the transmission signal.
Claims19
A repeater system, comprising:
- a receiving apparatus for receiving a signal from a base station;
- and
- a transmitting apparatus, wherein the transmitting apparatus varies a phase and a magnitude of a power amplified transmission signal to generate a compensation signal and applies the compensation signal to the receiving apparatus, and the receiving apparatus adds the inputted compensation signal and a signal inputted through a receiving antenna and removes an unnecessary frequency component caused due to interference of the transmission signal, wherein the transmitting apparatus comprises:
- a mixer for mixing an intermediate frequency signal outputted from the receiving apparatus and a local signal to generate a radio frequency signal;
- a power amplifier for amplifying the radio frequency signal outputted from the mixer;
- a low-pass filter for filtering the output signal of the power amplifier;
- a transmitting antenna for transmitting the output signal of the low-pass filter toward a destination;
- a phase converter for converting a phase of the signal amplified by the power amplifier;
- and
- a variable amplifier for variably amplifying the output signal of the phase converter so as to adjust the magnitude of the output signal and generating a compensation signal.
7 more elements
A transmitting/receiving apparatus of a repeater system, comprising:
- a receiving antenna for receiving a signal propagated from a base station;
- an adder for adding a signal inputted through the receiving antenna and a compensation signal and removing a noise caused due to interference of a transmission signal;
- a low-noise amplifier for amplifying the output signal of the adder;
- a first mixer for mixing the output of the low-noise amplifier and a local signal to obtain a converted intermediate frequency signal;
- and
- a transmitting apparatus for processing the intermediate frequency signal outputted from the first mixer and outputting a transmission signal and the compensation signal, wherein the compensation signal is generated by the transmitting apparatus by varying a phase and magnitude of a power amplified signal, wherein the transmitting apparatus comprises:
- a second mixer for mixing the intermediate frequency signal and a local signal to generate a radio frequency signal;
- a power amplifier for amplifying the radio frequency signal outputted from the second mixer;
- a low-pass filter for filtering the output signal of the power amplifier;
- a transmitting antenna for transmitting the output signal of the low-pass filter to a destination;
- a phase converter for converting a phase of the signal amplified by the power amplifier;
- and
- a variable amplifier for variably amplifying the output signal of the phase converter and generating a compensation signal.
10 more elements
A transmitting/receiving apparatus of a repeater system, comprising:
- a low-noise amplifier for amplifying an output signal of an adder;
- a first mixer for mixing the output of the low-noise amplifier and a local signal to obtain a converted intermediate frequency signal;
- a second mixer for mixing the intermediate frequency signal outputted from the first mixer and a local signal;
- a power amplifier for amplifying a radio frequency signal outputted from the second mixer;
- a low-pass filter for filtering the output signal of the power amplifier;
- a transmitting antenna for transmitting the output signal of the low-pass filter toward a destination;
- a phase converter for converting a phase of the signal amplified by the power amplifier;
- and
- a variable amplifier for variably amplifying the output signal of the phase converter and outputting a compensation signal to the adder.
6 more elements
A repeater system, comprising:
- a receiver for receiving an input signal, adding a compensation signal to the input signal and outputting a processed signal;
- and
- a transmitter for receiving the processed signal from the receiver, and for power amplifying the processed signal to yield a transmission signal, wherein the transmitter also varies a phase and magnitude of the power amplified processed signal to generate the compensation signal, wherein the transmitter comprises:
- a mixer for mixing the processed signal from the receiver with a local signal;
- a power amplifier for amplifying a signal output by the mixer and outputting a power amplified transmission signal;
- a low-pass filter for filtering the power amplified transmission signal and outputting a filtered transmission signal;
- a transmitting antenna for transmitting the filtered transmission signal;
- a phase converter for converting a phase of the power amplified transmission signal and outputting a phase converted signal;
- and
- a variable amplifier for varying a magnitude of the phase converted signal to yield the compensation signal.
7 more elements
Dependencies are inferred from the claim text.