CiNii Search - quadrature oscillator

1

High-Speed BPSK Modulator and Demodulator for 60GHz Band by NRD-Guide [in Japanese]

KAWAHARA Yuki , SAWADA Hirokazu , YONEYAMA Tsukasa

ミリ波帯で有効な低損失NRDガイドを用いて,60GHz帯における高速動作が可能なBPSK変復調器を試作した.今回のBPSK変調器は,既開発のNRDガイドASK変調器とハイブリッド結合器の有する90度移相特性を組み合わせて実現したものである.また,同ハイブリッド結合器を応用した直交検波器と,周波数の電圧制御が可能なNRDガイドガン発振器を用いて,コスタスループによるBPSK復調器も試作した.変復調器 …

IEICE technical report. Microwaves 108(452), 103-108, 20090227

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2

New voltage-mode quadrature oscillator employing single DBTA and only grounded passive elements

Herencsar Norbert , Koton Jaroslav , Vrba Kamil , Lahiri Abhirup

… A new voltage-mode quadrature oscillator employing single differential-input buffered and transconductance amplifier (DBTA), three grounded capacitors, and two grounded resistors is presented. … Outputs of two sinusoidal signals with 90° phase difference are available in the proposed quadrature oscillator. …

IEICE Electronics Express 6(24), 1708-1714, 2009

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3

Quadrature VCOs Using Single-Ended Injected Injection-Locked Frequency Dividers

JANG Sheng-Lyang , LIU Cheng-Chen , HUANG Jhin-Fang , WU Yuan-Kai , CHEN Jhao-Jhang

… This letter presents a new quadrature voltage-controlled oscillator (QVCO) consisting of two n-core Colpitts voltage-controlled oscillators (VCOs) with a tail inductor. …

IEICE Transactions on Electronics E92.C(9), 1226-1229, 2009

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4

A new low-phase noise direct-coupled CMOS LC-QVCO

Ebrahimi Emad , Naseh Sasan

… A new LC quadrature voltage-controlled oscillator (LC-QVCO), made with direct coupling of two CMOS LC-VCOs, is presented. …

IEICE Electronics Express 6(18), 1337-1344, 2009

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5

ASK and Pi/4-QPSK Dual Mode SiGe-MMIC Transceiver for 5.8GHz DSRC Terminals having Stabilized Amplifier Chain [in Japanese]

Shinjo SHINTARO , TSUTSUMI Koji , MORI Kazutomi , OKADA Hiroshi , INOUE Masahiro , SUEMATSU Noriharu

VCO,PLL,ASK及びπ/4QPSK各変調方式に対応する2つの送信系と共通の受信系を内蔵する5.8GHz帯DSRC車載器用送受信システムSiGe-MMICを開発した.チップ上でのグランド端子や電源端子共通化などにより形成される閉ループ回路をもつ高集積MMICの安定性を検討するために,従来のループ解析を差動系MMICに展開した安定化設計手法を導入する.平衡モードと不平衡モードの全閉ループに対し各 …

Technical report of IEICE. OPE 108(155), 157-162, 20080717

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6

ASK and Pi/4-QPSK Dual Mode SiGe-MMIC Transceiver for 5.8GHz DSRC Terminals having Stabilized Amplifier Chain [in Japanese]

Shinjo SHINTARO , TSUTSUMI Koji , MORI Kazutomi , OKADA Hiroshi , INOUE Masahiro , SUEMATSU Noriharu

VCO,PLL,ASK及びπ/4QPSK各変調方式に対応する2つの送信系と共通の受信系を内蔵する5.8GHz帯DSRC車載器用送受信システムSiGe-MMICを開発した.チップ上でのグランド端子や電源端子共通化などにより形成される閉ループ回路をもつ高集積MMICの安定性を検討するために,従来のループ解析を差動系MMICに展開した安定化設計手法を導入する.平衡モードと不平衡モードの全閉ループに対し各 …

IEICE technical report. Microwaves 108(154), 157-162, 20080717

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7

Generation of Quadrature Squeezed State of Light with High Squeezing Level and High Purity [in Japanese]

SUZUKI Shigenari

The Review of laser engineering 36(7), 399-403, 20080715

References (14)
8

40-Gb/s QPSK with inserted pilot symbols using self-homodyne detection

LU Guo-Wei , NAKAMURA Moriya , KAMIO Yukiyoshi , MIYAZAKI Tetsuya

… We proposed and experimentally demonstrated 40-Gb/s quadrature phase-shifted keying (QPSK) transmission systems with inserted pilot symbols, using a return-to-zero radio frequency (RZ-RF) driving signal in the transmitter and self-homodyne direct detection in the receiver. … Different from other existing homodyne or conventional differential QPSK systems, the proposed QPSK modulation formats do not need any complicated pre-coder, post-processor or local oscillator. …

IEICE technical report 108(84), 63-65, 20080605

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9

C-12-14 CMOS Injection-locked Voltage Controlled Oscillator with Quadrature Outputs [in Japanese]

Wang Tong , Fujishima Mmoru

Proceedings of the IEICE General Conference 2008年_エレクトロニクス(2), 104, 20080305

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10

C-2-20 Evaluation of 10.3GHz Quadrature Voltage Controlled Oscillator [in Japanese]

Ogase Taichi , Ikebe Masayuki , Sano Eiichi

Proceedings of the IEICE General Conference 2008年_エレクトロニクス(1), 53, 20080305

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11

A design of a low-noise voltage controlled oscillator using an active inductor [in Japanese]

SATO Takahide , TAKAGI Shigetaka , SUDA Satoshi , FJII Nobuo

電気学会研究会資料. ECT, 電子回路研究会 2007(35), 11-16, 20070628

References (8)
12

Construction of radio-controlled clocks/watches using TAD digital quadrature detection [in Japanese]

MASUDA Sumio , WATANABE Takamoto , YAMAUCHI Shigenori , TERASAWA Tomohito

… This paper describes Time Analog to Digital Converter(TAD) technology, TAD digital quadrature detection(TAD-DQD), and radio-controlled clock/watch as an application of the TAD-DQD. … Frequency error of the local oscillator in the clock/watch, which is used as a time standard, also can be estimated and corrected. …

Micromechatronics 51(196), 15-23, 20070610

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13

Sinusoidal-switched serial-coupled CMOS LC quadrature VCO

Jannesari Abumoslem , Kamarei Mahmoud

… A new topology to design low-phase-noise low-power quadrature voltage-controlled-oscillator (QVCO) is proposed. … The proposed topology is based on using a dynamic transistor biasing scheme in a typical voltage-controlled-oscillator (VCO). …

IEICE Electronics Express 4(13), 423-429, 2007

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14

Source-injection serial coupled CMOS LC quadrature VCO

Jannesari Abumoslem , Kamarei Mahmoud

… A novel source-injection serial-coupled (SISC) topology for designing LC quadrature voltage-controlled-oscillator (QVCO) is proposed. … The proposed topology uses the advantages of the cascode-coupling QVCO and source-injection parallel-coupled (SIPC) QVCO topologies and provides a good phase noise performance with good quadrature phase accuracy. …

IEICE Electronics Express 4(14), 467-471, 2007

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15

Franck-Condon factors based on anharmonic vibrational wave functions of polyatomic molecules

Rodriguez-Garcia Valerie , Yagi Kiyoshi , Hirao Kimihiko , Iwata Suehiro , Hirata So , ヤギキヨシ , ヒラオキミヒコ , イワタスエヒロ , ヒラタソウ , 八木清 , 平尾公彦 , 岩田末廣

… The anharmonic vibrational wave functions of the initial and final states are expanded unambiguously by harmonic oscillator basis functions of normal coordinates of the respective electronic states. … Alternatively, anharmonic wave functions of both states are expanded by basis functions of just one electronic state, permitting the FC integral to be evaluated directly by the Gauss-Hermite quadrature used in the VSCF and VCI steps [Bowman et al., Mol. …

Journal of Chemical Physics 125(1), 0141091-0141099, 20060707

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16

Extended Phase Noise Performance in Mutual Negative Resistance CMOS LC Oscillator for Low Supply Voltages(<Special Section>Analog Circuit and Device Technologies)

WORAPISHET Apisak

… A LC oscillator based upon the quadrature magnetic coupling to generate a mutual negative resistance (mu-R) is introduced. … The principal operation of the mu-R oscillator is described and its comparison with the popular cross-coupled topology is discussed. …

IEICE transactions on electronics E89-C(6), 732-738, 20060601

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17

A Reduction Technique of Phase Noise in 5GHz Complementary Quadrature LC Oscillator [in Japanese]

HATTORI Yukio , HYOGO Akira , SEKINE Keitaro

電気学会研究会資料. ECT, 電子回路研究会 2006(39), 49-53, 20060331

References (10)
18

Low Power Low Phase Noise LC Quadrature VCO Topology (Electronic Circuits)

KIM Ji-Hoon , YOO Hyung-Joun

… A simple low power low phase noise LC QVCO (Quadrature Voltage Controlled Oscillator) topology is proposed. …

IEICE transactions on electronics E89-C(3), 440-442, 20060300

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19

Quadrature Oscillator with Linear Current-Frequency Characteristic

YOSHIOKA M.

IEEJ International Analog VLSI Workshop 2006, Hangzhou, Nov., 2006

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20

A New Carrier Recovery Loop for High-Order Quadrature Amplitude Modulation(Transmission Systems and Transmission Equipment for Communications)

OUYANG Yuan , WANG Chin-Liang

… In this paper, we present a new all-digital carrier recovery loop for high-order quadrature amplitude modulation (QAM) signal constellations. … The proposed approach is a blind phase-frequency detector structure that consists of a phase detector, a phase offset estimator, a frequency offset estimator, and a digital control oscillator. …

IEICE transactions on communications E88-B(11), 4250-4258, 20051101

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