$\require{mediawiki-texvc}$
  • 검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
  • 검색연산자
검색도움말
검색연산자 기능 검색시 예
() 우선순위가 가장 높은 연산자 예1) (나노 (기계 | machine))
공백 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 예1) (나노 기계)
예2) 나노 장영실
| 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 예1) (줄기세포 | 면역)
예2) 줄기세포 | 장영실
! NOT 이후에 있는 검색어가 포함된 문서는 제외 예1) (황금 !백금)
예2) !image
* 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 예) semi*
"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"

통합검색

연합인증

연합인증 가입 기관의 연구자들은 소속기관의 인증정보(ID와 암호)를 이용해 다른 대학, 연구기관, 서비스 공급자의 다양한 온라인 자원과 연구 데이터를 이용할 수 있습니다.

이는 여행자가 자국에서 발행 받은 여권으로 세계 각국을 자유롭게 여행할 수 있는 것과 같습니다.

연합인증으로 이용이 가능한 서비스는 NTIS, DataON, Edison 등이 있습니다.

한번의 인증절차만으로 연합인증 가입 서비스에 추가 로그인 없이 이용이 가능합니다.

다만, 연합인증을 위해서는 최초 1회만 인증 절차가 필요합니다. (회원이 아닐 경우 회원 가입이 필요합니다.)

연합인증 절차는 다음과 같습니다.

최초이용시에는
ScienceON에 로그인 → 연합인증 서비스 접속 → 로그인 (본인 확인 또는 회원가입) → 서비스 이용

그 이후에는
ScienceON 로그인 → 연합인증 서비스 접속 → 서비스 이용

연합인증을 활용하시면 KISTI가 제공하는 다양한 서비스를 편리하게 이용하실 수 있습니다.

특허 상세정보

Ultra-wideband variable-phase ring-oscillator arrays, architectures, and related methods

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H03J-007/32   
미국특허분류(USC) 455/147; 455/086; 455/085; 455/141; 327/105; 327/156; 375/372
출원번호 UP-0131805 (2008-06-02)
등록번호 US-7848719 (2011-01-31)
발명자 / 주소
  • Krishnaswamy, Harish
  • Hashemi, Hossein
출원인 / 주소
  • University of Southern California
대리인 / 주소
    McDermott Will & Emery LLP
인용정보 피인용 횟수 : 11  인용 특허 : 21
초록

Variable phase ring oscillators are described that provide a linear phase progression between adjacent elements in an antenna array by providing a symmetric ring configuration of tuned amplifiers and a single phase shifter. The ring topology is coupled to a single PLL that allows for direct modulation and demodulation of arbitrary waveforms without using RF up/down converting mixers. The PLL distributes the transmit waveforms to all antenna elements in the transmit mode and combines the received waveforms in the receive mode without any complicated power...

대표
청구항

What is claimed is: 1. An ultra-wideband variable-phase ring-oscillator circuit comprising: a plurality of tuned amplifiers configured in series as a ring, wherein the ring includes a plurality of output nodes for connection to a plurality of antennas; a first phase-locked loop connected to the ring, wherein the first-phased locked loop includes a first phase shifter coupled to the ring, wherein the first phase shifter provides a phase delay between each pair of successive tuned amplifiers; and a reference oscillator configured and arranged to produce a...

이 특허에 인용된 특허 (21)

  1. Cranford, Jr.,Hayden Clavie; Garvin,Stacy Jean; Norman,Vernon Roberts; Owczarski,Paul Alan; Schmatz,Martin Leo; Stevens,Joseph Marsh, Analog unidirectional serial link architecture.
  2. Cranford, Jr.,Hayden Clavie; Garvin,Stacy Jean; Norman,Vernon Roberts; Owczarski,Paul Alan; Schmatz,Martin Leo; Stevens,Joseph Marsh, Analog unidirectional serial link architecture.
  3. Lee Bhum Cheol,KRX ; Choi Eun Chang,KRX ; Park Kwon Chul,KRX, Bit synchronization apparatus for recovering high speed NRZ data.
  4. Tso Robert ; Herman Ray Michael, Compact voltage controlled ring oscillator with quadrature outputs.
  5. Forbes, Leonard, Method and apparatus for providing clock signals at different locations with minimal clock skew.
  6. Forbes,Leonard, Method and apparatus for providing clock signals at different locations with minimal clock skew.
  7. Gonder, John F., Multi-phase, multi-frequency controller.
  8. Dimmler,Klaus; Rotzoll,Robert R., Non-quasistatic phase lock loop frequency divider circuit.
  9. Nicholls Charles Tremlett,CAX ; Grundlingh Johan M.,CAX, Oscillation circuits featuring coaxial resonators.
  10. Kobayashi,Yoshihiro, Oscillator circuit, oscillator circuit adjusting method, and mass measuring apparatus using oscillator circuit.
  11. Baker Scott ; Marius Goldenberg ; Pradeep Katikaneni ; Russ Croman ; Edmund Schneider, Phase interpolation circuits and methods and systems using the same.
  12. Schmatz,Martin, Phase rotator and data recovery receiver incorporating said phase rotator.
  13. Lee, Kun Seok, Phase-locked loop integrated circuits that support clock signal updates during dead zone compensation time intervals.
  14. Rasmussen, Carsten, Power amplifier and pulse-width modulated amplifier.
  15. Halladay Ralph H. (Huntsville AL) Emmons George A. (Huntsville AL), Quasi-optical oscillator using ring-resonator feedback.
  16. Lesmeister Gary J. (Hayward CA), Retriggered oscillator for jitter-free phase locked loop frequency synthesis.
  17. Kaylani,Tarek; Lu,Fang; Samueli,Henry, Synchronizing method.
  18. Kaylani, Tarek; Lu, Fang; Samueli, Henry, Synchronizing method and apparatus.
  19. Fensch Thierry,FRX ; Sevenhans Jan,BEX, Transmission circuit of a line encoded signal on a telephone line.
  20. Hinrichs,Jeffrey M.; Goyette,William R., Tunable resonator for use in active-RC continuous-time filters.
  21. Takada, Yutaka; Suzuki, Kenji; Tsuruoka, Tatsuya, Voltage-controlled oscillator.

이 특허를 인용한 특허 (11)

  1. Rasheed, Irshad; Schiller, Christopher T., Adaptive transmit array for beam-steering.
  2. Rasheed, Irshad; Schiller, Christopher T., Automatic high-resolution adaptive beam-steering.
  3. Schiller, Christopher T.; Kennedy, Jonathan, Extending beamforming capability of a coupled voltage controlled oscillator (VCO) array during local oscillator (LO) signal generation through a circular configuration thereof.
  4. Schiller, Christopher T., Extending beamforming capability of a coupled voltage controlled oscillator (VCO) array during local oscillator (LO) signal generation through accommodating differential coupling between VCOs thereof.
  5. Schiller, Christopher T., Extending beamforming capability of a coupled voltage controlled oscillator (VCO) array during local oscillator (LO) signal generation through fine control of a tunable frequency of a tank circuit of a VCO thereof.
  6. Schiller, Christopher T., Extending beamforming capability of a coupled voltage controlled oscillator (VCO) array during local oscillator (LO) signal generation through frequency multiplication.
  7. Petrov, Dmitry; Mei, Haitao, PLL system and method of operating same.
  8. Schiller, Christopher T.; Kennedy, Jonathan, Phase shift based improved reference input frequency signal injection into a coupled voltage controlled oscillator (VCO) array during local oscillator (LO) signal generation to reduce a phase-steering requirement during beamforming.
  9. Schiller, Christopher T; Shaw, Michael Joseph, Power management in an electronic system through reducing energy usage of a battery and/or controlling an output power of an amplifier thereof.
  10. Tekin, Ahmet; Emira, Ahmed, Pumped distributed wave oscillator system.
  11. Shaw, Michael Joseph; Kennedy, Jonathan Lee; Livezey, Darrell Lee; Laskar, Joy, Simultaneous accommodation of a low power signal and an interfering signal in a radio frequency (RF) receiver.