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IEEE Microwave and Guided Wave Letters

Issue 11 • Date Nov. 1996

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Displaying Results 1 - 14 of 14
  • A transversal filter using CPW directional couplers

    Publication Year: 1996, Page(s):401 - 403
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    A transversal filter using coplanar waveguide (CPW) directional couplers and no active devices has been proposed. It aims to be free from the noise figure problems found in an active transversal filter and also aims to show it can be easily realized with a single-layer structure when the bandwidth is narrower than about 30%. Two types of CPW directional couplers were employed. When using G-S-G-S-G... View full abstract»

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  • Comments on "New prospects for time domain analysis" [and reply]

    Publication Year: 1996, Page(s):422 - 423
    Cited by:  Papers (4)
    Request permission for commercial reuse | PDF file iconPDF (104 KB)
    Freely Available from IEEE
  • Comment on "A quasi-optical isolator" [and reply]

    Publication Year: 1996, Page(s):423 - 424
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (130 KB)

    For the original article see ibid., vol. 6, no.5, p. 205-6 (1996). In the aforementioned article, the authors describe the design of a linear-to-circular polarizer. The commenter considers their use of six cascaded printed gratings as a practical way to realize this type of quasi-optical isolator and their use of a resistor loaded grid as a good way to absorb the reflected wave. However, the comme... View full abstract»

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  • Comment on "A Quasi-Optical Isolator" [Comments]

    Publication Year: 1996
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (130 KB)

    In the above named letter, the authors describe an interesting design of a linear-to-circular polarizer. Their use of six cascaded printed gratings is indeed a practical way to realize this type of quasioptical isolator. Their use of a resistor loaded grid is a good way to absorb the reflected wave. In this comment it is pointed out here that there have been earlier demonstrations of nonferrite qu... View full abstract»

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  • Authors' Reply [Comments]

    Publication Year: 1996
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (47 KB)

    The authors of the original letter thank J. J. Taub for reading the letter and for sending several interesting references. However, they feel that reference 7 in original letter is a good review of quasioptical duplexers, but unfortunately it does not contain any of the references supplied by Dr. Taub. The original authors briefly discuss the four references cited in the comment by Dr Taub. All of... View full abstract»

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  • Patent abstracts

    Publication Year: 1996
    Request permission for commercial reuse | PDF file iconPDF (467 KB)
    Freely Available from IEEE
  • Specifications for a linear network simultaneously noise and available-power matched

    Publication Year: 1996, Page(s):407 - 409
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    The authors address the problem of designing a linear lossy input matching network for low-noise amplifiers so that the source impedance can deliver its available power and correspond to the minimum noise figure of the driven stages. The differences between lossless and lossy networks are highlighted because matching circuits are usually considered to be lossless when designing an amplifier. After... View full abstract»

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  • Novel low-loss delay line for broadband phased antenna array applications

    Publication Year: 1996, Page(s):395 - 397
    Cited by:  Papers (16)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB)

    The microwave propagation velocity along a nonlinear transmission line is a function of dc bias, hence, a nonlinear transmission line (NLTL) can be utilized as a broadband delay line. A hybrid NLTL has been fabricated in a proof-of-principle experimental concept test where a 1.1-ns true time delay with <4-dB insertion loss has been measured in good agreement with theory. A 2×2 NLTL-based ... View full abstract»

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  • A coplanar 38-GHz SiGe MMIC oscillator

    Publication Year: 1996, Page(s):398 - 400
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    Design, technology, and first results of a coplanar Si-SiGe HBT oscillator monolithically integrated on high-resistivity silicon are reported. At 38 GHz, an oscillator output power of 2 dBm with a conversion (dc to rf) efficiency of 6% is measured View full abstract»

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  • Wave propagation in a periodic microstrip line on a multilayered anisotropic substrate

    Publication Year: 1996, Page(s):416 - 418
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    An efficient spectral domain full-wave algorithm based on 4×4 transfer matrix and integral equation method is developed for the periodic microstrip line on the multilayered anisotropic substrate. The substrate may consists of arbitrary number of layers whose permittivity and permeability are tensors of general form. It is shown, that in some cases, the quasistatic approach for calculations o... View full abstract»

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  • A new TLM node for Berenger's perfectly matched layer

    Publication Year: 1996, Page(s):410 - 412
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (236 KB)

    A new two-dimensional (2-D) transmission-line matrix (TLM) node for the modeling of perfectly matched layer (PML) media is presented. A rigorous field formulation of the 2-D TLM node allows one to construct a node that has a scattering matrix fully compatible with the standard 2-D hybrid node. This approach avoids the coupling of the TLM algorithm with a finite difference time-domain (FDTD) approx... View full abstract»

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  • A 180° out-of-phase power divider using asymmetrical coplanar stripline

    Publication Year: 1996, Page(s):404 - 406
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    This letter presents a new uniplanar 3-dB power divider using an asymmetrical coplanar stripline (ACPS) for microwave integrated circuit (MIC) and microwave and millimeter-wave integrated circuit (MMIC) applications. The circuit having 180° out-of-phase between two output ports provides good performance as compared to conventional microstrip power dividers. Experimental results for the power d... View full abstract»

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  • Modal cross power in quasi-TEM transmission lines

    Publication Year: 1996, Page(s):413 - 415
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    The authors examine modal cross power in electromagnetic transmission lines. They show that the cross powers of nearly degenerate modes may be large in quasi-TEM multiconductor transmission lines typical of modern electronic circuits at moderate and low microwave frequencies. The authors develop simple expressions to estimate the magnitude of these cross powers from the “power-normalized&rdq... View full abstract»

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  • Integrated FDTD and solid-state device simulation

    Publication Year: 1996, Page(s):419 - 421
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    A mixed-mode circuit simulation technique is presented, based on the lumped-element finite-difference time-domain (FDTD) scheme. The algorithm is extended to incorporate numerical models of lumped devices. This makes the formulation and characterization of analytical, closed-form models for circuit devices unnecessary and allows for directly correlating device behavior and fabrication process para... View full abstract»

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Aims & Scope

This Periodical ceased production in 2000. The current retitled publication is IEEE Microwaves and Wireless Component Letters.

Full Aims & Scope