Search Results 1-20 of 51

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  • Coaxially Fed Antenna Composed of Monopole and Choke Structure Using Two Different Configurations of Composite Right/Left-Handed Coaxial Lines

    FUKUSHIMA Takatsugu , MICHISHITA Naobumi , MORISHITA Hisashi , FUJIMOTO Naoya

    … At the resonant frequency, the total length of the proposed antenna which is the length of the monopole structure plus the choke structure is 0.12 wavelength. … The characteristics of the proposed antenna has been compared with that of the conventional coaxially fed monopole antenna without the choke structure and the sleeve antenna with the quarter-wavelength choke structure. …

    IEICE Transactions on Communications E102.B(2), 205-215, 2019


  • Multiband Antenna Based on Meta-Structured Transmission Line for RF Harvesting Application

    UM Kwi Seob , LEE Jae-Gon , LEE Jeong-Hae

    … <p>A penta-band antenna based on the mu-negative transmission line is presented for radio frequency (RF) energy harvesting application. … two quarter wavelength resonances, three quarter wavelength resonance, zeroth order resonance, and first order resonance. … The parasitic radiating strip antenna generates quarter wavelength resonance radiation. …

    IEICE Transactions on Communications E101.B(7), 1701-1707, 2018


  • Half-Height-Pin Gap Waveguide Technology and Its Applications in High Gain Planar Array Antennas at Millimeter Wave Frequency

    YANG Jian , FAN Fangfang , TAGHIKHANI Parastoo , VOSOOGH Abbas

    … The gap waveguide technology is a new transmission line technology introduced recently, which makes use of the stopband of wave propagation created by a pair of parallel plates, one PEC (perfect electric conductor) and one PMC (perfect magnetic conductor), with an air gap in between less than a quarter of the wavelength at operation frequency. …

    IEICE Transactions on Communications E101.B(2), 285-292, 2018


  • Power Dependent Impedance Measurement Exploiting an Oscilloscope and Möbius Transformation

    SAKIHARA Sonshu , TAKANA Masaru , SAKAI Naoki , OHIRA Takashi

    … To meet the condition, we propose a linear 4-port network consisting of a quarter-wavelength transmission line and resistors. …

    IEICE Transactions on Electronics E100.C(10), 918-923, 2017


  • Miniature Design Technique of Stabilized C-Band p-HEMT MMIC Doherty Power Amplifier with Lumped Element Load Modulator

    YOSHIDA Tsuyoshi , TAKAYAMA Yoichiro , ISHIKAWA Ryo , HONJO Kazuhiko

    … To minimize the circuit size, a lumped-element load modulation circuit without a quarter wavelength transmission line has been introduced to MMIC technology. …

    IEICE Transactions on Electronics E99.C(10), 1130-1139, 2016


  • Design of Parallel Ring-Lines Type Rat-Race Circuit  [in Japanese]

    YOSHIHASHI Naoshi , KAWAI Tadashi , OHTA Isao , ENOKIHARA Akira

    … This paper describes a rat-race hybrid with loose coupling using parallel ring-lines which compose of a quarter wavelength transmission line and a short-circuited coupled transmission line. …

    IEICE technical report. Microwaves 113(365), 19-22, 2013-12-19

  • Design of Microwave Lowpass Filters Using Microstrip Coupled-Line Structures  [in Japanese]

    Tsurumi Junichi , Ma Zhewang , Ohira Masataka

    … In this paper, a microstrip lowpass filter with improved passband frequency response is proposed by cascading a coupled-line hairpin resonator with two quarter-wavelength transmission lines having different characteristic impedances. … Moreover, by adding another appropriately designed coupled-line hairpin resonator to the proposed LPF, it is shown that flat passband, very wide stopband, and sharp roll-off property of the LPF are realized. …

    IEICE technical report. Microwaves 113(365), 1-6, 2013-12-19

  • Improvement of the Frequency Responses of Lowpass Filters Using Microstrip Coupled-Line Hairpin Resonators  [in Japanese]

    Tsurumi Junichi , Ma Zhewang , Ohira Masataka

    … In this paper, a microstrip lowpass filter is proposed with improved frequency response by adding quarter-wavelength transmission line to a coupled-line hairpin resonator. …

    IEICE technical report. Microwaves 113(70), 71-76, 2013-05-30

  • Broadband Design of Via-less Planar Microstrip-to-waveguide Transition  [in Japanese]

    MURASE Keisuke , SAKAKIBARA Kunio , KIKUMA Nobuyoshi , HIRAYAMA Hiroshi

    … However, an additional process for via holes increases production cost and manufacturing error of via hole position increases transmission loss of the transition. … The waveguide profile is equivalent to the short circuit when the open circuit at the edge of the metal plate is spaced by a quarter wavelength in the substrate from the waveguide profile. …

    IEICE technical report. Microwaves 112(56), 27-31, 2012-05-17

    References (19)

  • An X-Band GaN High-Power Amplifier with a Parallel-Resonant 2^<nd>-harmonic Input Terminating Network  [in Japanese]


    … It consists of an inter-digital capacitor and a transmission line, which are connected in parallel and constitute a pseudo-distributed parallel-resonant network. … This network contributes to increase efficiency of the power amplifier, with more compact circuit size and a wider operating frequency, compared to a conventional network utilizing a quarter-wavelength open-circuited stub. …

    IEICE technical report. Microwaves 111(458), 35-40, 2012-02-23

    References (14) Cited by (5)

  • Novel Miniaturized Harmonic Suppression Branch-Line Coupler Using Artificial Transmission Lines for UHF Applications

    KU Chia-Hao , LIU Hsien-Wen , LIN Yu-Shu , LIN Kuei-Yi , WANG Pao-Jen

    … A planar miniaturized branch-line coupler with harmonic suppression property for UHF band applications is presented in this paper. … By properly synthesizing the LC-tanks that employ artificial transmission lines, two pairs of quarter-wavelength branch-lines to respectively meet characteristic impedances of 35.4 and 50 ohms can be obtained with the coupler. …

    IEICE Transactions on Electronics 94(7), 1237-1239, 2011-07-01

    J-STAGE  References (5)

  • A New Miniaturization and the nth Harmonic Suppression of Wilkinson Power

    HAZERI Ali Reza

    … By replacing the quarter wavelength transmission lines of the conventional Wilkinson power divider with the equivalent P-type transmission lines, a compact power divider which can suppress the nth harmonic is achieved. … Design equations of proposed P-type line are achieved by ABCD matrices. …

    IEICE Transactions on Electronics 94(2), 215-219, 2011-02-01

    J-STAGE  References (33)

  • Analysis of Microstrip Line with Bends Using Fourier Transform and Mode-Matching Technique

    PARK Hyun Ho

    … In this paper, the transmission and reflection properties of the microstrip line with bends are investigated using the Fourier transform and a mode-matching technique. … Analytical closed-form expressions for transmission and reflection coefficients are developed using the residue calculus. …

    IEICE Transactions on Communications 93(7), 1731-1738, 2010-07-01

    J-STAGE  References (16)

  • Optimization of Microstrip-to-slot Transition for Ultra-wideband Bulk LTSA

    Damri Radenamad , Akira Hirose

    IEICE Proceeding Series (52), 3TB1-4, 2010


  • Compact Broadband Wilkinson Balun Using Metamaterial Transmission Lines

    Jeongpyo Kim , Haeil Chung , Youngki Lee , Jaehoon Choi

    IEICE Proceeding Series (51), 197-200, 2009


  • Compact Feed Circuit with Quarter Wavelength Transmission Line Matrix Controlling Beams in Three Directions Including Boresight  [in Japanese]

    TSUJI Masatoshi

    … A compact feed circuit with a λ/4 transmission line matrix circuit for use in array antennas to control beams in three directions, including boresight, is presented. … The feed circuit antenna is composed of five switches and λ/4 transmission lines, and the feeding matrix circuit yields phase differences of ±90° …

    IEEJ Transactions on Electronics, Information and Systems 128(6), 926-932, 2008-06-01

    J-STAGE  References (17) Cited by (3)

  • Dual-Band Bandpass Filter for RFID Applications

    Jan-Dong Tseng , Chung-Kai Wu

    IEICE Proceeding Series (35), 1B01-4, 2008


  • Immittance Converter

    Irie Hisaichi

    … Consequently, it converts a constant voltage source into a constant current source and a constant current source into a constant voltage source.<br>It is well known that the quarter-wavelength transmission line shows immittance conversion characteristics. … However, it has very long line length for inverters switching frequency, and is not suitable for power electronics application. …

    Journal of the Japan Institute of Power Electronics 34(0), 19-27, 2008


  • Novel broadband microstrip-to-CPW transition with easy transmission band control

    Baik Jung-Woo , Lee Tae-Hak , Kim Young-Sik

    … A broadband microstrip-to-coplanar waveguide (CPW) transition using two parallel folded balun structures with easy transmission band control for various RF circuits and integrated systems is proposed in this paper. … Each balun is employed an open-circuited microstrip line and a short-circuited slotline with one quarter-wavelength long each. …

    IEICE Electronics Express 5(2), 48-52, 2008


  • Wideband Microstrip Bandpass Filter Based on EBG Concept


    … Unit cells in the EBG circuit model are realized by capacitive and inductive parallel loading of a transmission line. … The main advantage lies in the fact that the size of unit cells can be small because electrical length of transmission line segments in unit cells can be chosen arbitrarily, hence the final filter structure becomes small in size. …

    IEICE transactions on electronics 90(12), 2212-2217, 2007-12-01

    References (15)

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