Search Results - Roh, Hyoung-Hwan

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  1. 1
    Differential Colpitts VCO for Enhancing Transceiver Performance in Specified UHF Mobile RFID Environment Conditions

    Differential Colpitts VCO for Enhancing Transceiver Performance in Specified UHF Mobile RFID Environment Conditions by ROH, Hyoung-Hwan, PARK, Jun-Seok

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  2. 2
    TX Leakage Cancellation via a Micro Controller and High TX-to-RX Isolations Covering an UHF RFID Frequency Band of 908-914 MHz

    TX Leakage Cancellation via a Micro Controller and High TX-to-RX Isolations Covering an UHF RFID Frequency Band of 908-914 MHz by JUNG, Jin-Woo, ROH, Hyoung-Hwan, KIM, Jong-Cheol, KWAK, Ho-Gil, MYOUNG SUB JEONG, PARK, Jun-Seok

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  3. 3
    Extending the Interrogation Range of a Passive UHF RFID System With an External Continuous Wave Transmitter

    Extending the Interrogation Range of a Passive UHF RFID System With an External Continuous Wave Transmitter by Park, Jun-Seok, Jung, Jin-Woo, Ahn, Si-Young, Roh, Hyoung-Hwan, Oh, Ha-Ryoung, Seong, Yeung-Rak, Lee, Yoon-Deock, Choi, Kyoung

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  4. 4
    Simple and adaptive UHF RFID modulator using defected ground structure and practical measurement on reader-to-tag communication

    Simple and adaptive UHF RFID modulator using defected ground structure and practical measurement on reader-to-tag communication by Jung, Jin-Woo, Roh, Hyoung-Hwan, Park, Jun-Seok

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  5. 5
    Adaptive TRX isolation scheme by using TX leakage canceller at variable frequency

    Adaptive TRX isolation scheme by using TX leakage canceller at variable frequency by Jung, Jin-Woo, Roh, Hyoung-Hwan, Kwak, Ho-Gil, Sub Jeong, Myoung, Park, Jun-Seok

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  6. 6
    A dual directional coupler with unique asymmetric coupling values at 1.7-2 GHz

    A dual directional coupler with unique asymmetric coupling values at 1.7-2 GHz by Jung, Jin-Woo, Roh, Hyoung-Hwan, Park, Jun-Seok

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  7. 7
    Micro balun design and fabrication at 910 MHz and mobile RFID reader miniaturization thereby

    Micro balun design and fabrication at 910 MHz and mobile RFID reader miniaturization thereby by Kim, Jong-Cheol, Jung, Jin-Woo, Roh, Hyoung-Hwan, Park, Jun-Seok

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  8. 8
    A 900-MHz Direct-Conversion Transceiver for Mobile RFID Systems

    A 900-MHz Direct-Conversion Transceiver for Mobile RFID Systems by Jang, Jong-Eun, Bae, Sung-Woo, Oh, Ha-Ryoung, Seong, Yeong-Rak, Park, Jun-Seok, Lee, Hoon, Choi, Seung-Wan, Ahn, Karam, Jung, Myoung-Sub, Song, Eui-Seok, Kim, Juno, Roh, Hyoung-Hwan, Kim, Gi-Beom

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  9. 9
    A regulated low phase noise differential colpitts VCO for mobile RFID system

    A regulated low phase noise differential colpitts VCO for mobile RFID system by Hyoung-Hwan Roh, Eun-Jin Lee, Jin-Wook Jung, Kyong-Tae Park, Kwan-Kyu Nae, Hong-Goo Cho, Jun-Seok Park, Jong-Eun Jang

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  10. 10
    A regulated low phase noise differential colpitts VCO for mobile RFID system

    A regulated low phase noise differential colpitts VCO for mobile RFID system by Hyoung-Hwan Roh, Eun-Jin Lee, Jin-Wook Jung, Kyong-Tae Park, Kwan-Kyu Nae, Hong-Goo Cho, Jun-Seok Park, Jong-Eun Jang

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  11. 11
    A design of Balun for UHF mobile RFID system

    A design of Balun for UHF mobile RFID system by Jeong-cheol Kim, Boo-won Jeon, Kyoung-Tae Park, Hyoung-Hwan Roh, Jun-Seok Park, Ha-Ryoung Oh, Young-Rak Seong

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  12. 12
    ASK modulator for RFID system using a novel variable DGS resonator

    ASK modulator for RFID system using a novel variable DGS resonator by Yoon-Deock Lee, Kwan-Kyu Nae, Eun-Jin Lee, Hyoung-Hwan Roh, Jin-Wook Jung, Young-Kou Han, Jin-Woo Jung, Seok-Cheon Baek, Myeong-Sub Jung, Hong-Goo Cho, Ha-Ryoung Oh, Yeong-Rak Seong, Jun-Seok Park

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  13. 13
    ASK modulator for RFID system using a novel variable DGS resonator

    ASK modulator for RFID system using a novel variable DGS resonator by Lee, Yoon-Deock, Cho, Hong-Goo, Oh, Ha-Ryoung, Seong, Yeong-Rak, Park, Jun-Seok, Nae, Kwan-Kyu, Lee, Eun-Jin, Roh, Hyoung-Hwan, Jung, Jin-Wook, Han, Young-Kou, Jung, Jin-Woo, Baek, Seok-Cheon, Jung, Myeong-Sub

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  14. 14
    TX Leakage Cancellation via a Micro Controller and High TX-to-RX Isolations Covering an UHF RFID Frequency Band of 908a914 MHz

    TX Leakage Cancellation via a Micro Controller and High TX-to-RX Isolations Covering an UHF RFID Frequency Band of 908a914 MHz by Jung, Jin-Woo, Roh, Hyoung-Hwan, Kim, Jong-Cheol, Kwak, Ho-Gil, Jeong, Myoung Sub, Park, Jun-Seok

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  15. 15
    A channel allocation scheme considering with collisions and interferences in practical UHF RFID applied communication fields

    A channel allocation scheme considering with collisions and interferences in practical UHF RFID applied communication fields by Yeo, Seon Mi, Kim, Jeong Seok, Park, Chan Won, Choi, Gil Young, Jeon, Bu-Won, Bae, Jae Hyun, Moon, Young Joo, Kim, Yeon Joo, Roh, Hyoung Hwan, Park, Jun Seok, Seong, Yeong Rak, Oh, Ha Ryoung

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