• Title/Summary/Keyword: 비율분배

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Vector analysis for multimode-interference power splitter with an arbitrary splitting ratio (임의 분배 비율의 다중모드간섭 광전력 분배기에 대한 벡터 해석법)

  • 김진희;이상선;송석호
    • Korean Journal of Optics and Photonics
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    • v.13 no.6
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    • pp.479-485
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    • 2002
  • We propose a vector analysis for designing multimode-interference power splitters, which can show an arbitrary splitting ratio. Power splitting is a fundamental characteristic in integrated optical circuits and its value would be multiplied for many applications if the splitting ratio could be selected freely. Since the vector analysis utilizes a graphical method based on the previously-reported mathematical results of multimode interference, it shows an excellent advantage especially for designing power splitters with an arbitrary splitting ratio.

An Unequal Power Divider with Adjustable Dividing Ratio (가변 분배 비율 비대칭 전력 분배기)

  • Lim, Jong-Sik;Oh, Seong-Min;Koo, Jae-Jin;Jeong, Yong-Chae;Ahn, Dal
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.18 no.5 s.120
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    • pp.478-485
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    • 2007
  • In this paper, an unequal 1:N Wilkinson power divider with adjustable dividing ratio is proposed. The proposed unequal power divider is composed of basic Wilkinson structure. It consists of rectangular-shaped defected ground structure (DGS), isolated island pattern in DGS, and varactor diodes of which capacitance depends on bias voltage. The characteristic impedance value of microstrip line having DGS goes up and down by controlling bias voltage for diodes, and consequently the power dividing ratio(N) is adjusted. The obtained N from measurement is $2.59{\sim}10.4$ which mean the proposed divider has adjustable unequal dividing ratio.

An Unequal Divider based on Transmission Line with Periodic Capacitor Shunt Connection (캐패시터가 주기적으로 병렬 연결된 전송선로를 이용한 비대칭 분배기)

  • Kim, Young;Yoon, Young-Chul
    • Journal of Advanced Navigation Technology
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    • v.16 no.5
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    • pp.781-786
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    • 2012
  • In this paper, we propose the design and performance of an unequal divider using transmission line with periodic capacitor shunt connection. To design divider with a high dividing ratio, we limit a high impedance line value to fabricate microstrip line and also, design a low impedance line of below $10{\Omega}$ using periodic capacitor shunt connection. As a design example, a 10:1 ratio divider was designed and measured at center frequency 1 GHz to show the validity of the unequal divider using periodic capacitor shunt connection. Its performance is in good agreements with the simulated results.

A variable power divider circuit using the combine characteristic of the branchline coupler (브랜치라인 커플러 결합을 이용한 가변 전력 분배기 회로)

  • Park, Ung-hee
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.21 no.2
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    • pp.245-251
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    • 2017
  • The proposed variable pawer divider in this paper is composed of one equal power 2-way Wilkinson power divider, two variable phase shifters with 90-degree phase variation to be connected two output paths of the 2-way power divider, and one branchline coupler to combine output signals of two variable phase shifter. The proposed variable power divider can theoretically have an arbitrary power division ratio ranging from ${\infty}:1$ to ${\infty}:1$ due to 90-degrees phase variation of two phase shifter. The proposed power divider circuit fabricates on laminated TLX-9(h=20 mil, er=2.5; Taconic) with a center frequency of 1.7 GHz. The power division ratio of the fabricated prototype varies from about 1:100 to 200:1, with an input reflection characteristic(S11) of below -16 dB, an insertion loss of about -1.0 dB, and an isolation characteristic of below -17 dB between two output ports in the range 1.65-1.75 GHz.

The variable power divider circuit to use the ring-hybrid coupler (링-하이브리드 커플러를 이용한 가변 전력 분배기 회로)

  • Park, Ung-hee
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.20 no.2
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    • pp.253-259
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    • 2016
  • This paper introduces a new variable power divider circuit with an arbitrary power division ratio ranging from $1:{\infty}$ to ${\infty}:1$. The proposed power divider circuit consists of one branch-line coupler to be a good input matching characteristic, two variable phase shifters with 90-degree phase variation to be connected two output paths of the branch-line coupler, and one ring-hybrid coupler to combine output signals of two variable phase shifter. The power division ratio between the two output ports of the proposed power divider can be easily controlled by the phase variation of the two phase shifter. The proposed power divider circuit fabricates on laminated RF-35 (h = 20 mil, er=3.5; Taconic) with a center frequency of 2 GHz. The power division ratio of the fabricated prototype varies from about 1:1000 to 5000000:1, with an input reflection characteristic(S11) of below -20 dB, an insertion loss of about -1.0 dB, and an isolation characteristic of below -17 dB between two output ports in the range 1.9-2.1 GHz.

Power Dividers for High Splitting Ratios using Transmission Line Connected with Open and Short Stubs (단선과 단락 스터브가 연결된 전송선로를 이용한 높은 분배비율을 갖는 전력 분배기)

  • Kim, Young
    • Journal of Advanced Navigation Technology
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    • v.25 no.3
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    • pp.229-235
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    • 2021
  • This paper proposes a method of implementing an unequal power divider for high splitting ratios by using transmission lines connected with open and short stubs. The proposed method is an equivalent circuit analysis of a transmission line with an additional port so that it can be converted to an arbitrary impedance in the center of a 2-port transmission line and a 3-port transmission line with an open or short stub connected in parallel to each port. To prove the validity of this method, a Wilkinson power divider with k2 = 20 dB splitting ratio and a Gysel power divider with k2 = 17 dB splitting ratio were designed at a center frequency of 1 GHz using a 3-port transmission line equivalent circuit. The experimental results of the electrical characteristics are in good agreement with the simulation.

Unequal Power Divider using Parallel Connection Transmission Line (병렬 연결된 전송선로를 이용한 비대칭 전력 분배기)

  • Kwon, Sang-Keun;Kim, Young;Yoon, Young-Chul
    • Journal of Advanced Navigation Technology
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    • v.17 no.2
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    • pp.202-207
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    • 2013
  • In this paper, a high dividing ratio unequal power divider using parallel connection transmission line is presented. Because a very low impedance transmission line can't implement a microstrip technology, this can fabricate a parallel connection transmission line with high impedance. When we design a high dividing ratio divider, we need the very low impedance line. The parallel connection transmission line could be implemented to obtain a low impedance line characteristic. To validity this approach, we are implemented a 10:1 unequal divider at center frequency 1 GHz. The performances of power divider agree with simulation results.

Unequal Bagley Divider based on Uniform Characteristic Impedance Transmission Lines with Adjustment Electrical Lengths (균일한 임피던스 전송선로 길이 조정을 통한 비대칭 Bagley 분배기)

  • Yoon, Young-Chul;Hong, Soung-Wook;Kim, Young
    • Journal of Advanced Navigation Technology
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    • v.21 no.3
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    • pp.287-293
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    • 2017
  • This paper describes an unequal Bagley divider using uniform transmission lines with adjustment electrical lengths between output ports. To obtain an arbitrary dividing ratio of Bagley divider, we have only adjusted the electrical lengths of the transmission line between output ports. All the transmission lines have the same characteristic impedance value. This design method does not require an impedance transformer for port matching. For verification, we simulated and fabricated a 3-way, 1:2:1 and 5-way, 2:3:4:3:2 ratio Bagley divider with an operating frequency of 2 GHz. The experimental results are in agreement with the simulated results.

Unequal Power Divider with Different Complex Termination Impedance (다른 복소 종단 임피던스를 갖는 비대칭 전력 분배기)

  • Kim, Young
    • Journal of Advanced Navigation Technology
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    • v.26 no.1
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    • pp.15-21
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    • 2022
  • In this paper, we propose a method to implement an unequal power divider with different complex termination impedances for different output power ratios. The proposed method was designed using a matching the terminated complex impedances of the output port using only the transmission line, and presented an isolation circuits to satisfy the isolation characteristic between the terminating complex impedance ports. To prove the feasibility of this method, an unequal power divider with different load complex impedances with a splitting ratio k2 = 3 dB and 1.7 dB and an unequal power divider with different complex termination impedances of all ports with a splitting ratio k2 = 3 dB was designed at a center frequency of 2 GHz, and it was confirmed that the measured results of the electrical characteristics agree well the simulation.

Unequal Dual-band Wilkinson Power Divider (비대칭 이중대역 전력분배기)

  • Kim, Byung-Chul;Lee, Soo-Jung;Kim, Young
    • Journal of Digital Convergence
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    • v.12 no.4
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    • pp.343-348
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    • 2014
  • This paper suggested a theoretical approach and an implementation for the design of an unequal Wilkinson power divider with a high dividing ratio operating at two-frequencies. The T-section transmission lines and the two-section of Monzon's theory are proposed to operate a dual-band application. To achieve the high dividing ratio divider, the high impedance line using a T-shaped structure and low impedance lines with periodic shunt open stubs are implemented. For the validation of this divider, a dual-band power divider with a high dividing ratio of 5 is simulated and measured at 1 GHz and 2 GHz. The measured performances of the divider are in good agreements with simulation results.