Abstract: Disclosed herein is an embedded chip antenna. The embedded chip antenna having a complementary radiator structure includes two radiators that have identical radiation characteristics and are respectively arranged on both sides of a feed point. According to the present invention, the radiator of a chip antenna has a single physical radiator structure, but is electrically formed of a plurality of partial radiators symmetrical with respect to a feed point, and radiation operations in high and low frequency bands are separately performed. Therefore, complementary operational characteristics that counteract external effects are implemented, so that, when part of a human body, such as the hand, affects one partial radiator on one side of the chip antenna, the other partial radiator on the other side thereof independently operates, thereby minimizing performance degradation originating from the outside of the antenna.

Abstract: The present invention relates to a dualduplexer having a matrix structure and a fabrication method thereof. The dualduplexer includes a dualduplexing block which uses the transmitting input unit, the receiving input unit, the transmitting output unit and the receiving output unit in common, wherein the transmitting input unit, the receiving input unit, the transmitting output unit and the receiving output unit are connected in the form of a matrix; a low noise amplifying block for performing low noise amplification on a signal outputted from an input port of the dualduplexing block; and a high power amplifying block for performing high power amplification on the signal outputted from the low noise amplifying block and transmitting the amplified signal to the dualduplexing block.

Abstract: A repeater and method for automatically setting output signal level of the repeater is disclosed. The repeater includes: a voltage detection unit for measuring a voltage of signal amplified by a plurality of the amplifiers; a digital variable resist unit for providing a reference voltage value Vref; a comparison unit for comparing the detected voltage Vdec from the voltage detection unit and the reference voltage value Vref from the digital variable resist unit; and a control unit for setting output signal level of the repeater by controlling the digital variable resistor unit to generate the reference voltage Vref to be identical to the detected voltage Vdec and controlling an output of repeater based on the comparison result from the comparison unit after setting the output signal level of the repeater.

Abstract: A switchable combiner and apparatus for providing intergrated combiner unit, which can reduce problem due to frequent substitution of unit. The apparatus for providing intergrated combiner unit includes the means of; a) dividing input signal according to basic type, redundancy type or power division/coupling type; b) switching the transmitted signal to power amplifier; c) switching the transmitted signal to the means of combining; and d) combining the transmitted signal according to basic type, redundancy type or power division/coupling type.

Abstract: A switchable combiner and apparatus for providing intergrated combiner unit, which can reduce problem due to frequent substitution of unit. The apparatus for providing intergrated combiner unit includes the means of; a) dividing input signal according to basic type, redundancy type or power division/coupling type; b) switching the transmitted signal to power amplifier; c) switching the transmitted signal to the means of combining; and d) combining the transmitted signal according to basic type, redundancy type or power division/coupling type.

Abstract: A repeater and method for automatically setting output signal level of the repeater is disclosed. The repeater includes: a voltage detection unit for measuring a voltage of signal amplified by a plurality of the amplifiers; a digital variable resist unit for providing a reference voltage value Vref; a comparison unit for comparing the detected voltage Vdec from the voltage detection unit and the reference voltage value Vref from the digital variable resist unit; and a control unit for setting output signal level of the repeater by controlling the digital variable resistor unit to generate the reference voltage Vref to be identical to the detected voltage Vdec and controlling an output of repeater based on the comparison result from the comparison unit after setting the output signal level of the repeater.