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An Integer-N PLL Frequency Synthesizer Design for The 900MHz UHF RFID Application
김신웅,김영식,Kim, Sin-Woong,Kim, Young-Sik Korea Institute of Electronic Communication Scienc 2009 한국전자통신학회 논문지 Vol.4 No.4
본 논문은 전하펌프와 클록트리거 회로를 사용하는 프리스케일러가 포함된 UHF RFID 응용을 위한 900MHz Integer-N 방식의 주파수 합성기를 소개한다. 쿼드러처 출력이 가능한 전압제어발진기와 프리스케일러, 위상주파수검출기와 전하펌프 및 아날로그 고정 검출기는 0.35-${\mu}m$ CMOS 공정으로 설계되었다. 주파수 분주기는 verilog-HDL 모듈을 통해 설계되었으며 mixed-mode 시뮬레이션을 통해 디자인을 검증하였다. 전압제어발진기의 동작 주파수영역은 828MHz에서 960MHz이고 위상이 90도 차이나는 쿼드러처 신호를 출력한다. 시뮬레이션 결과로 위상잡음은 100KHz offset 주파수에서 -102dBc/Hz 이었으며, 고착시간은 896MHz에서 928MHz까지 32MHz step을 천이할 때 4us이다. This paper presents an Integer-N phase-locked loop (PLL) frequency synthesizer using a novel prescaler based on a charge pump and clock triggering circuit. A quadrature VCO has been designed for the 900MHz UHF RFID application. In this circuit, a voltage-controlled oscillator(VCO), a novel Prescaler, phase frequency detector(PFD), charge pump(CP), and analog lock detector(ALD) have been integrated with 0.35-${\mu}m$CMOS process. The integer divider has been developed with a verilog-HDL module, and the PLL mixed mode simulation has been performed with Spectre-Verilog co-simulator. The sweep range of VCO is designed from 828 to 960 MHz and the VCO generates four phase quadrature signals. The simulation results show that the phase noise of VCO is -102dBc/Hz at 100 KHz offset frequency, and the maximum lock-in time is about 4us with 32MHz step change (from 896 to 928 MHz).
한방치료 및 천수근약침을 병행하여 치료한 제 1형 복합부위통증증후군 환자 치험 1례
정재현,윤영웅,정승현,김신웅,최희승,신동재,왕선준,Chung, Jai-Hyeon,Yun, Young-Ung,Cheong, Seong-Hyun,Kim, Sin-Woong,Choi, Hee-Seung,Shin, Dong-Jae,Wang, Shann-Jun 척추신경추나의학회 2013 척추신경추나의학회지 Vol.8 No.1
한랭자극에 취약한 복합부위통증증후군 환자 1례를 대상으로 한방치료 및 천수근약침 치료를 시행한 결과 환자의 주소증 및 NRS, ODI, MMT 결과상 호전이 있었음을 확인하였다. Objectives: The purpose of this case is to investigate and report the effectiveness of korean Medicine treatment and Harpagophytum radix. Pharmacopuncture for the type 1 complex regional pain syndrome. Methods: One patient is admitted at Bu-Chun Jaseng Hospital of Korean Medicine, diagnosed as type 1 complex regional pain syndrome and treated with korean Medicine treatment and Harpagophytum radix. pharmacopuncture. This case is measured and assessed by Neumerical Rating Scale(NRS), Oswestry Low-back Pain Disability Index(ODI) and Manual Muscle Test(MMT). Results: After treatment, the intensity and frequency of complex regional pain is gradually decreased and the result of NRS, ODI, MMT showed improvement. Conclusions: As seen in this cases of type 1 complex regional pain syndrome, korean Medicine treatment and Harpagophytum radix. pharmacopuncture appear to be effective for the pain relief and musculoskeletal function recovery.
근에너지기법 및 한방치료를 적용한 족하수를 동반한 요추추간판탈출증 환자 치험 7례
정재현,윤영웅,정승현,김태호,최영준,김신웅,이차로,Chung, Jai-Hyeon,Yun, Young-Ung,Cheong, Seong-Hyun,Kim, Tae-Ho,Choi, Young-Jun,Kim, Sin-Woong,Lee, Cha-Ro 척추신경추나의학회 2014 척추신경추나의학회지 Vol.9 No.1
Objectives : The present study reports seven foot drop patients with herniated intervertebral lumbar disc treated by Muscle Energy Technique and Korean traditional medicine therapy. Methods : Seven foot drop patients with herniated intervertebral lumbar disc were treated by Muscle Energy Rechnique and Korean traditional medicine therapy and were assessed by Manual Muscle Test, numeric rating scale, and oswestry low back pain disability index. Results : Among seven foot drop patients, two cases showed complete recovery, three cases showed recovery over good grade, and two cases showed recovery over good grade after temporary weakness. numeric rating scale and oswestry low back pain disability index of all cases showed improvement. Conclusions : Seven foot drop patients with herniated intervertebral lumbar disc were treated by Muscle Energy Rechnique and Korean traditional medicine therapy and showed improvement. It is anticipated that this report benefits the future in depth study and clinical treatments on the foot drop symptom in korean medicine.
슬괵건을 이용한 전방 십자 인대 재건술 : 고정 방법 및 술후 재활 방법에 따른 임상적 비교 Study of Fixation Method and Rehabilitation
최장석,이범구,성인호,김신웅 대한슬관절학회 2000 대한슬관절학회지 Vol.12 No.2
Purpose : To evaluate appropriate rehabilitation program after ACL reconstruction using double-looped semitendonosus and gracilis graft. Material and Method : ACL reconstruction using double-looped semitendinosus and gracilis tendon was performed in thirty patients from March 1997 to February 1999, and the patients were evaluated with K-T 2000 arthrometer, Lachman test, pivot shift test, mid-thigh circumference and Lysholm score. We divided the patients into three group; in group A, conservative rehabilitation after bio-absorbable screw fixation was done, in group B, aggressive rehabilitation after bioabsorbable screw fixation was done, in group C, aggressive rehabilitation after Semi-Fix fixation was done. Results: Average K-T 2000 maximum manual side-to-side difference was 0.73mm in group A, 3.66mm in group B, 0.91mm in group C at 6 weeks after the operation. The difference was greater in group B than group A and C. There was no difference in mid thigh circumference and Lysholm score at one year postoperatively. Positive signs in Lachman test and pivot shift test were increased in group B than group A and group C. Conclusion : Rehabilitation after bioabsorbable screw fixation of double-looped hamstring tendon should be performed conservatively, because aggressive rehabilitation might increase joint laxity.