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公开(公告)号：US10236846B2
公开(公告)日：2019-03-19
申请号：US15894675
申请日：2018-02-12
Applicant: Korea Electronics Technology Institute
Inventor： Ki Jin Kim , Kwang Ho Ahan
Abstract: A power amplifier using an equivalent transformer is provided. The power amplifier includes amplifiers and T lines having first terminals connected to the amplifiers and second terminals connected to output sides. Accordingly, powers are combined using the equivalent transformer in the power amplifier, such that an insertion loss can be reduced and thus degradation of output power efficiency can be prevented.
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公开(公告)号：US09966904B2
公开(公告)日：2018-05-08
申请号：US15391500
申请日：2016-12-27
Applicant: Korea Electronics Technology Institute
Inventor： Ki Jin Kim , Kwang Ho Ahan
CPC classification number: H03F1/223 , H03F1/347 , H03F3/193 , H03F2200/405 , H03F2200/451 , H03F2200/537
Abstract: An RF amplifier to increase a gain using a transformer is provided. The amplifier includes: a first transistor configured to generate a current by amplifying and converting an input voltage; a second transistor configured to amplify the generated current; and a first transformer configured to feed an emitter current of the second transistor back to a gate. Accordingly, Gm of the transistor is boosted using the transformer, such that a high gain can be obtained with a low current. Therefore, a problem of a gain reduction caused by a parasitic capacitor at a high frequency can be solved.
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公开(公告)号：US09787000B2
公开(公告)日：2017-10-10
申请号：US14630267
申请日：2015-02-24
Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE
Inventor： Ki Jin Kim , Kwang Ho Ahn , Sanghoon Park , Jong-Won Yu , Hyun Sung Tae
Abstract: A control system connected to a plurality of array antenna performs beamforming. The control system comprises a beam radiation controller for requesting a predetermined first antenna group to radiate beams and requesting a second antenna group including the first antenna group to radiate beams to an optimized sector, a beam receiver for receiving response beams from the first antenna group and the second antenna group, and a sector selector for setting up an optimized sector based on the received beams for the first antenna group, and transmitting information on the optimized sector to the beam radiation controller in order to control the second antenna group to radiate beams to the optimized sector.
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公开(公告)号：US20170214366A1
公开(公告)日：2017-07-27
申请号：US15385633
申请日：2016-12-20
Applicant: Korea Electronics Technology Institute
Inventor： Ki Jin Kim , Kwang Ho Ahan
CPC classification number: H03F1/0205 , G01S7/285 , G01S7/292 , G01S7/352 , G01S13/34 , G01S2013/0254 , H03F3/19 , H03F3/195 , H03F3/21 , H03F3/45197 , H03F2200/06 , H03F2200/09 , H03F2200/129 , H03F2200/165 , H03F2200/294 , H03F2200/408 , H03F2200/451 , H03F2200/534 , H03F2200/537 , H03F2200/541 , H03F2203/45356 , H03F2203/45494 , H03F2203/45498 , H03F2203/45631 , H03F2203/45686 , H03F2203/45694 , H03F2203/45701
Abstract: A high-efficiency high-integrated receiver is provided. The radar receiver according to an embodiment of the present disclosure includes a receiver configured to receive a radar signal, a processor configured to attenuate a magnitude of a low frequency band of the received signal of the receiver, a filter configured to perform a low pass filtering on an output signal of the processor, and an ADC configured to A/D convert the output signal of the filter. Accordingly, it is possible to demodulate all the signals being reflected from targets in various distances when even using a low resolution ADC, thereby reducing the manufacturing cost and power consumption.
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