Results 251 to 260 of about 2,919,406 (297)
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Branch-Line Hybrid-Rings with Coupled-Lines
24th European Microwave Conference, 1994, 1994A branch-line hybrid-ring is composed of four quarter-wavelength transmission lines, and hence occupies a large area on printed circuitboards because of its loop structure. In this paper, a branch-line hybrid-ring which includes microwave C sections is proposed for size reduction.
Iwata Sakagami +3 more
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Characteristics of Coupled Microstrip Transmission Lines-II: Evaluation of Coupled-Line Parameters
IEEE Transactions on Microwave Theory and Techniques, 1970This part of the paper presents the parameters of coupled microstrip lines which are required in the equations and results derived in Part I for determining the characteristics of coupled lines. Several geometries are considered and the inductive and capacitive coupling coefficients, the effective dielectric constant, and the characteristic impedance ...
M.K. Krage, G.I. Haddad
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A Capacitance-Coupled Bit Line Cell
IEEE Journal of Solid-State Circuits, 1985A 38-µm2dynamic random-access memory (dRAM) cell with a capacitance-coupled bit line (CCB) approach is described. This cell enables a storage capacitor area 2-2.5 times larger than double polysilicon-type cells, or half the cell area with the same design rules.
M. Taguchi +5 more
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IEEE Transactions on Microwave Theory and Techniques, 1978
The quarter wave meander-folded coupler is a compact device useful for frequencies up to a few gigahertz. The folding is shown to shorten the electric length of the coupler and a theory is presented for the calculation of this shortening effect. The theory shows that the even-mode circuit is shortened to a higher extent than the odd-mode circuit which ...
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The quarter wave meander-folded coupler is a compact device useful for frequencies up to a few gigahertz. The folding is shown to shorten the electric length of the coupler and a theory is presented for the calculation of this shortening effect. The theory shows that the even-mode circuit is shortened to a higher extent than the odd-mode circuit which ...
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Coupled transmission lines revisited
IEEE Transactions on Education, 1988The author presents a very satisfying and disarmingly simple way of introducing students to the parallel line coupler, which derives its S matrix directly from a knowledge of its eigenvectors and eigenvalues. For a pair of symmetrical coupled lines, the eigenvectors can be found by inspection, and the eigenvalues determined easily by means of flow ...
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Line coupling in anisotropic Raman branches
The Journal of Chemical Physics, 1994Direct connection between collisional Raman cross sections and state-to-state rotational ones permits, within the sudden approximation, to evidence drastic decouplings from isotropic to anisotropic lines. These decouplings are consistent with the results obtained by using the strong collision model.
Bonamy, L. +5 more
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Bi-directional coupling between two coupled transmission lines
IEEE Microwave and Wireless Components Letters, 2003Coupled mode theory including backward coupling is employed to investigate the bi-directional coupling mechanism in two symmetrical coupled microstrip transmission lines. Analytical scattering parameter expressions for the case of matched terminations are presented. Reflections and near-end crosstalk is attributed to the combined effects of distributed
null Dengpeng Chen, null Zhongxiang Shen
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Field-To-Line Coupling Models Compared: Coupled Lines and Modified Taylor
2013Models for field-to-line coupling are interesting because they help to predict the immunity of PCBs and explain the relation between routing and immunity. In this article a meandered PCB trace illuminated by EM field in a TEM cell is analysed. The near-end and far-end coupling is predicted using two models: a detailed and an approximative one.
Barić, Adrijan, Mandić, Tvrtko
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Parallel-coupled filters using stepped-impedance coupled lines
2016 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), 2016A stepped-impedance coupled line (SICLN) is proposed in this paper. The proposed SICLN can be equivalent to a conventional quarter-wave coupled line section at the center frequency. The proposed SICLN is applied to half- and quarter-wave parallel-coupled filters. The proposed filters show both size reduction and better spurious responses.
Ting-An Chen +3 more
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Inhomogeneous Coupled-Line Filters
S-MTT International Microwave Symposium Digest, 1974Experimental and Theoretical results are presented demonstrating some novel properties of inhomogeneous coupled-line structures having large even-odd mode velocity ratios, e.g., a single inhomogeneous coupled-line filter section with an equiripple, 3-peak stopband response.
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