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公开(公告)号：US11533022B2
公开(公告)日：2022-12-20
申请号：US17105985
申请日：2020-11-27
Applicant: AGENCY FOR DEFENSE DEVELOPMENT
Inventor： Taehoon Kim , Jaedon Park , Jungho Joe , Youngsin Kim , Jongsung Park , Inwoong Kang , Sanggeun Jeon , Seungwon Park
Abstract: In accordance with an aspect of the present disclosure, there is provided a power amplification apparatus, the apparatus comprising: an input part; a first-1 transformer and a first-2 transformer connected to the input part in parallel; a first amplifier and a second amplifier connected to the first-1 transformer and the first-2 transformer, respectively; a first switch connected to one side of the first-2 transformer; a second-1 transformer and a second-2 transformer connected to the first amplifier and the second amplifier, respectively, and connected to an output part in parallel; and a second switch connected to one side of the second-2 transformer.
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2.发明授权公开(公告)号：US11533158B2
公开(公告)日：2022-12-20
申请号：US17177005
申请日：2021-02-16
Applicant: AGENCY FOR DEFENSE DEVELOPMENT
Inventor： Inwoong Kang , Jaedon Park , Jong Sung Park , Taehoon Kim
IPC: H04L5/14
Abstract: This application relates to a full duplex communication device. In one aspect, the device includes a transmission/reception antenna configured to receive a received signal corresponding to a transmitted signal. The device may also include an analog cancellation unit configured to set values of elements constituting an analog cancellation circuit and cancel an interference signal included in the received signal using the set values of the elements constituting the analog cancellation circuit. The device may further include a digital cancellation unit configured to cancel a remaining interference signal included in the received signal. Some embodiments can minimize the influence of distortion of a transmitted signal due to non-linearity of a power amplifier during an active analog self-interference cancellation process.
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公开(公告)号：US12250069B2
公开(公告)日：2025-03-11
申请号：US17734883
申请日：2022-05-02
Inventor： Taehoon Kim , Yoan Shin , Beong Sung Kim , Kwansoo Kim
Abstract: This application relates to an apparatus and method for generating a jamming signal, and a communication system. In one aspect, the method may include converting binary bits of a first communication signal to be transmitted and obtaining at least one codeword matched previously to the binary bits. The method may also include generating a second communication signal by superimposing a first conversion signal being obtained by converting the first communication signal to an up-chirp signal and a second conversion signal being obtained by converting the first communication signal to a down-chirp signal. The method further include generating a pseudo jamming signal by computing the second communication signal and the codeword.
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公开(公告)号：US20210167736A1
公开(公告)日：2021-06-03
申请号：US17105985
申请日：2020-11-27
Applicant: AGENCY FOR DEFENSE DEVELOPMENT
Inventor： Taehoon Kim , Jaedon Park , Jungho Joe , Youngsin Kim , Jongsung Park , Inwoong Kang , Sanggeun Jeon , Seungwon Park
Abstract: In accordance with an aspect of the present disclosure, there is provided a power amplification apparatus, the apparatus comprising: an input part; a first-1 transformer and a first-2 transformer connected to the input part in parallel; a first amplifier and a second amplifier connected to the first-1 transformer and the first-2 transformer, respectively; a first switch connected to one side of the first-2 transformer; a second-1 transformer and a second-2 transformer connected to the first amplifier and the second amplifier, respectively, and connected to an output part in parallel; and a second switch connected to one side of the second-2 transformer.
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