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IEEE Microwave and Wireless Components Letters

Issue 11 • Date Nov. 2004

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  • Table of contents

    Publication Year: 2004, Page(s): c1
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  • IEEE Microwave and Wireless Components Letters publication information

    Publication Year: 2004, Page(s): c2
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  • Provisional model technique in the FDTD analysis of high-Q resonators

    Publication Year: 2004, Page(s):501 - 503
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB) | HTML iconHTML

    We propose A technique for extracting Q-factors and resonant frequencies of resonators from signal models constructed using samples provided by a time-domain simulator. The method involves two models. The first model is a provisional one and serves one to generate additional samples that prevent the original sequence from being corrupted during signal processing. The second model is the final one ... View full abstract»

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  • A fully integrated 24-dBm CMOS power amplifier for 802.11a WLAN applications

    Publication Year: 2004, Page(s):504 - 506
    Cited by:  Papers (22)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (385 KB) | HTML iconHTML

    A fully integrated 24-dBm complementary metal oxide semiconductor (CMOS) power amplifier (PA) for 5-GHz WLAN applications is implemented using 0.18-μm CMOS foundry process. It consists of differential three-stage amplifiers and fully integrated input/output matching circuits. The amplifier shows a P1 of 21.8 dBm, power added efficiency of 13%, and gain of 21 dB, respectively. Th... View full abstract»

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  • Demonstration of a backward wave in a single split ring resonator and wire loaded finline

    Publication Year: 2004, Page(s):507 - 509
    Cited by:  Papers (37)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB) | HTML iconHTML

    A finline-based left-handed transmission line is presented and analyzed. The transmission line is periodically loaded by single split ring resonators and thin wires in order to synthesize a negative permeability and permittivity propagation medium. The propagation properties are computed by means of full-wave frequency analysis of scattering parameters from which the band diagram is derived. A bac... View full abstract»

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  • Multiport investigation of the coupling of high-impedance probes

    Publication Year: 2004, Page(s):510 - 512
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (160 KB) | HTML iconHTML

    We used an on-wafer measurement technique that combines two- and three-port frequency-domain mismatch corrections in order to characterize the influence of a high-impedance probe on a device under test. The procedure quantifies the probe's load of the circuit, and the coupling between the probe and the device. View full abstract»

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  • On the current source implementation for the ADI-FDTD method

    Publication Year: 2004, Page(s):513 - 515
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB) | HTML iconHTML

    The current source implementation for the alternating-direction implicit finite-difference time-domain (ADI-FDTD) method is examined in this letter. By regarding the ADI-FDTD method as an approximate factorization of the Crank-Nicolson scheme, current source is naturally coupled into simulations. As a result, field distribution is much more improved and free of asymmetry. View full abstract»

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  • Quasi-TEM model of magnetostatic-surface wave excitation in microstrip lines

    Publication Year: 2004, Page(s):516 - 518
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB) | HTML iconHTML

    The per unit length capacitance and inductance of a YIG-loaded microstrip line are computed in the frame of a quasi-transverse electromagnetic approach. The transmission line parameters, i.e., the complex propagation constant and the complex characteristic impedance are computed from them and the insertion loss of a finite-length YIG-loaded microstrip line is obtained using the simple transmission... View full abstract»

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  • Application of singular value decomposition on FDTD simulation result - a novel approach for modal analysis of complex electromagnetic problems

    Publication Year: 2004, Page(s):519 - 521
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB) | HTML iconHTML

    We have proposed that application of singular value decomposition on finite-difference time-domain simulations is best suited for modal analysis of complex real-life electromagnetic problems. This combination of two powerful techniques yields a wealth of information about the complete mode structure which cannot be otherwise obtained. This is particularly important for a real-life system having co... View full abstract»

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  • A 0.3-25-GHz ultra-wideband mixer using commercial 0.18-μm CMOS technology

    Publication Year: 2004, Page(s):522 - 524
    Cited by:  Papers (61)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (361 KB) | HTML iconHTML

    An ultra-wideband mixer using standard complementary metal oxide semiconductor (CMOS) technology was first proposed in this paper. This broadband mixer achieves measured conversion gain of 11 /spl plusmn/ 1.5 dB with a bandwidth of 0.3 to 25 GHz. The mixer was fabricated in a commercial 0.18-μm CMOS technology and demonstrated the highest frequency and bandwidth of operation. It also prese... View full abstract»

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  • A 1.8-V distributed voltage-controlled oscillator module for 5.8-GHz ISM band

    Publication Year: 2004, Page(s):525 - 527
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB) | HTML iconHTML

    This letter presents the design and implementation of a 1.8-V 5.8-GHz distributed voltage-controlled oscillator module based on bipolar transistors. The oscillator delivered -2-dBm-output power with a current consumption of 11.5 mA. The tuning range achieved was 650 MHz. The measured phase noise was -100 dBc/Hz at 1-MHz offset. The circuit construction was simple and robust and no buffer amplifier... View full abstract»

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  • An 8-20-GHz wide-band LNA design and the analysis of its input matching mechanism

    Publication Year: 2004, Page(s):528 - 530
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB) | HTML iconHTML

    A wide-band low-noise amplifier (LNA) design is presented with -10 dB input reflection coefficient and 100-K noise temperature over the 8-20-GHz frequency range at room temperature. This LNA can be cooled down in a liquid helium cryostat to have 10-K noise temperature for the purpose of radio-astronomy application. To achieve its wide-band characteristics, a novel input matching mechanism is propo... View full abstract»

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  • Microstrip "wiggly-line" bandpass filters with multispurious rejection

    Publication Year: 2004, Page(s):531 - 533
    Cited by:  Papers (73)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB) | HTML iconHTML

    A method to achieve the rejection of multiple spurious passbands in parallel-coupled-line microstrip bandpass filters is proposed. As it was previously demonstrated by the authors, using a continuous perturbation of the width of the coupled-lines following a sinusoidal law, the wave impedance can be modulated so that the first undesired harmonic passband of the filter is rejected, while the desire... View full abstract»

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  • A reconfigurable microstrip antenna for switchable polarization

    Publication Year: 2004, Page(s):534 - 536
    Cited by:  Papers (144)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2024 KB) | HTML iconHTML

    A novel reconfigurable microstrip antenna with switchable polarization sense is proposed. The proposed antenna has a simple structure, consisting of a corner-truncated square radiating patch, four small triangular conductors, and a microstrip line feed. Using independently biased PIN diodes on the patch, it can produce linear polarization, or left- or right-hand circular polarization according to ... View full abstract»

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  • Unconditionally stable ADI-FDTD formulations of the APML for frequency-dependent media

    Publication Year: 2004, Page(s):537 - 539
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB) | HTML iconHTML

    Unconditional stable formulations of the anisotropic perfectly matched layer (APML) are presented for truncating frequency-dependent media. The formulations are based on the auxiliary differential equation and the alternating direction implicit finite-difference time-domain (ADI-FDTD) methods. Numerical examples carried out in one and two dimensions show that the proposed formulations remain uncon... View full abstract»

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  • A low-phase noise LC-QVCO in CMOS technology

    Publication Year: 2004, Page(s):540 - 542
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (322 KB) | HTML iconHTML

    This letter presents a source-injection parallel coupled (SIPC) quadrature voltage-controlled oscillator (QVCO) topology. In the proposed SIPC-QVCO, compared to the conventional parallel-coupled LC-QVCO (P-QVCO), the coupling transistors are configured in a way so that the 1/f noise, contributed by the coupling transistors at the output, can be avoided. The newly proposed SIPC-QVCO and conventiona... View full abstract»

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  • Advertisement - IEEE Member Digital Library

    Publication Year: 2004, Page(s): 543
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    Publication Year: 2004, Page(s): 544
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  • IEEE Microwave and Wireless Components Letters Information for authors

    Publication Year: 2004, Page(s): c3
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  • IEEE Microwave and Wireless Components Letters blank page

    Publication Year: 2004, Page(s): c4
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Aims & Scope

The IEEE Microwave and Wireless Components Letters (MWCL) publishes three page papers that focus on microwave theory, techniques and applications as they relate to components, devices, circuits, biological effects, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals.

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