Directional couplers
A REVIEW ON DIRECTIONAL COUPLERS WITH INTRODUCTION OF TRANSMISSION LINES IN BETWEEN COUPLED LINE SECTIONS
... of directional couplers includes sampling of signals (which can be further used in the measurement of power, measurement of frequency, signal leveling and reflection coefficient measurements), measurement ...
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Multi Section Coupled Line Directional Couplers Design
... The lines can be symmetrical or asymmetrical and the separation between the lines may be either constant or variable. Both lines are placed in close to each other so that the electromagnetic fields can be interacting. ...
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Design and Verification of Strip Line Directional Couplers for Various Applications in RF and Microwave Communication Systems
... to couplers of at most three sections [2], ...symmetrical directional couplers of more than three sections can be synthesized on the basis of a firstorder theory [4] these designs did not maximize ...
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General strong coupled mode theory for multiwaveguide nonlinear directional couplers
... Chapters 1-4 are review chapters setting the background for the rest of the thesis. Recent papers in the literature regarding nonlinear materials, spatial and temporal solitons, linear strong coupled mode theory, and ...
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Development of Forward-wave Directional Couplers Loaded by Periodic Shunt Shorted Stubs
... forward-wave directional couplers using periodic shunt short circuited stubs is ...forward-wave directional couplers (FWDC) is disccused using the equivalent circuit ...The couplers are ...
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Scattering Matrix of 2N-Port Hybrid Directional Couplers
... hybrid directional couplers with more than four ports is rather difficult to find in the ...hybrid directional couplers with N input and N output ...hybrid directional couplers with ...
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Multi Hole Waveguide Directional Couplers
... The directional couplers are inherently assumed as four-port devices, which consisted of two transmission lines that are electromagnetically coupled to each ...
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Simulation of Electromagnetic Wave Propagation in Microwave Directional Couplers and Rat-Race Hybrid Coupler Using Open Source Finite Element Software
... Abstract- Computer modeling and simulations of physical processes play an important role in teachinga-learning process of engineering courses and particularly for difficult courses such as electromagnetic and microwave ...
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A Design of Compact Microwave Six-Port Device for Ultra-Wideband Applications
... ◦ couplers and power dividers in stripline, microstrip, and waveguide ...quadrature directional couplers by two 8.43-dB quadrature directional couplers with series ...quadrature ...
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Design and Simulation of Coupled-line Couplers
... Directional couplers are one of the microwave passive components that are used in array antennas, modulators, filters and power amplifiers for propose of dividing or combining the ...
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On-chip manipulation of single photons from a diamond defect
... Here we report the coupling of a room temperature color center single photon source and an integrated LOC. The single photons are emitted from a chromium related dia- mond color center which operates at room temperature ...
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Temperature Effects in Fiber Couplers
... Abstract Directional Coupler is one of the devices used in signal transmission techniques in optical fiber communication systems, especially Wavelength Division Multiplexing ...The directional coupler can ...
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Low-loss multimode interference couplers for terahertz waves
... replace directional couplers due to the ease of fabrication, their advantages of compactness, large fabrication tolerance, wide bandwidth, excellent splitting ratio, as well as low-loss and polarization ...
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Low-loss multimode interference couplers for terahertz waves
... replace directional couplers due to the ease of fabrication, their advantages of compactness, large fabrication tolerance, wide bandwidth, excellent splitting ratio, as well as low-loss and polarization ...
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Power transfer on multiple fiber couplers
... Power transfer characteristics among N parallel single mode optical fibers have been investigated using coupled mode theory (Wang et al, 2007). The analysis shows that power transfer of N fibers is periodical during ...
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Design of Multilayer and Multiline Microstrip Directional Coupler with Closed Form Relations
... type directional couplers is their poor directivity, which usually becomes a problem during sampling of the signals when they are used as power monitoring ...the couplers and enhance the accuracy of ...
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Subwavelength grating waveguide devices for telecommunications applications
... as couplers and beam splitters, both directional couplers (DCs), and multimode interference couplers [14,15]; mode transformers [16]; and polarization converters ...
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Development of Resonant Diplexers for high-power ECRH – Status, Applications, Plans
... the directional couplers installed in the transmission lines near to the launchers were used as input for the control of the resonator mirror drive; the controller was set for frequency tracking to ...
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Design, Simulation and Development of Wideband Directional Coupler at S Band
... Directional couplers have four ports as shown in Figure ...3. Directional couplers are frequently symmetrical [9] so there also exists port 4, the isolated ...
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Miniaturization of Trans-Directional Coupled Line Couplers Using Series Inductors
... coupled-line directional couplers are used in Butler matrices, problems of circuit complexity and parasitic effects are caused by crossover circuits ...TRD couplers can achieve tight coupling and ...
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