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# IEEE Transactions on Microwave Theory and Techniques

## Issue 6  Part 1 • June 2012

This issue contains several parts.Go to:  Part 2

## Filter Results

Displaying Results 1 - 25 of 37

Publication Year: 2012, Page(s):C1 - C4
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• ### IEEE Transactions on Microwave Theory and Techniques publication information

Publication Year: 2012, Page(s): C2
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• ### An Analytical Formulation for Black Box Conversion Matrix Extraction

Publication Year: 2012, Page(s):1493 - 1499
Cited by:  Papers (1)
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In this paper, an analytical formulation for calculation of a Black Box conversion matrix using results of a large signal harmonic balance simulation is presented. This formulation is based on analytical modeling of a general black box and incorporates only the large signal analysis data (pump signal harmonics). The formulation is applied to a nonlinear resistor as a special case, and the results ... View full abstract»

• ### Efficient Low-Frequency Breakdown Free Full-Wave PEEC Modeling Based on Geometrical Optics DCIM

Publication Year: 2012, Page(s):1500 - 1512
Cited by:  Papers (1)
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The partial element equivalent circuit (PEEC) modeling based on geometrical optics discrete complex image method (GODCIM) is proposed. In GODCIM, the spectral domain dyadic Green's functions for layered media (DGFLM) are expanded into a geometrical optics series. The coefficient of each term is related to the Green's function for a half-space problem and then is expanded into an exponential series... View full abstract»

• ### Experimental Validation of Frozen Modes Guided on Printed Coupled Transmission Lines

Publication Year: 2012, Page(s):1513 - 1519
Cited by:  Papers (6)  |  Patents (1)
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Previous work has theoretically demonstrated that nonreciprocal slow-wave modes, namely, “frozen modes,” can be supported on a pair of coupled transmission lines printed on a magnetic substrate. Small antennas have also been designed by exploiting these modes. However, to date, we have yet to demonstrate and observe their existence experimentally. To this end, we construct two printe... View full abstract»

• ### Unequal Wilkinson Power Dividers With Favorable Selectivity and High-Isolation Using Coupled-Line Filter Transformers

Publication Year: 2012, Page(s):1520 - 1529
Cited by:  Papers (33)
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In the conventional unequal-split Wilkinson power divider, poor selectivity for each transmission path is usually a problem. To surmount this obstacle, the parallel coupled-line bandpass filter structure is utilized as an impedance transformer as well as a band selector for each transmission path in the proposed unequal-split Wilkinson power dividers. However, the bandpass filters in the proposed ... View full abstract»

• ### Quasi-Arbitrary Phase-Difference Hybrid Coupler

Publication Year: 2012, Page(s):1530 - 1539
Cited by:  Papers (14)
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Previous hybrid couplers have output phase difference that have either been 0°, 90°, or 180°. Other phase differences could only be realized using additional phase-shift elements. This increased circuit size and cost, and also degraded overall performance due to interconnecting mismatch losses. The proposed uniplanar arbitrary phase-difference ... View full abstract»

• ### Stepped-Impedance Coupled Resonators for Implementation of Parallel Coupled Microstrip Filters With Spurious Band Suppression

Publication Year: 2012, Page(s):1540 - 1548
Cited by:  Papers (11)
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A parallel-coupled microstrip bandpass filter based on the stepped-impedance coupled resonator (SICR) for suppression of harmonic spurious response is presented. The SICR relies upon the incorporation of different stepped impedances for the even and odd propagation modes of the coupled microstrip lines. This is to align the modal parallel resonance frequencies, and thereby effectively equalize the... View full abstract»

• ### Design Method for Butter–Cheby Bandpass Filters With Even Number of Resonators

Publication Year: 2012, Page(s):1549 - 1559
Cited by:  Papers (1)
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A design method for the bandpass filters with even number of resonators is presented for compacter size and wider bandwidth. The design method is based on the conventional filters with two resonators defined as a scattering parameter at a given frequency and a characteristic impedance of a 0° lumped-element equivalent circuit. The filter designed in this paper can be terminated i... View full abstract»

• ### Novel Wideband Differential Bandpass Filters Based on T-Shaped Structure

Publication Year: 2012, Page(s):1560 - 1568
Cited by:  Papers (57)
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Two novel wideband differential bandpass filters based on a T-shaped structure are proposed in this paper. Broad passband and wideband harmonic suppression for the differential/common mode can be easily achieved for the wideband differential filter without cross coupling, due to the controlled resonator frequencies of the shorted/open T-shaped structure. In addition, another more compact different... View full abstract»

• ### A Tunable Combline Bandpass Filter Loaded With Series Resonator

Publication Year: 2012, Page(s):1569 - 1576
Cited by:  Papers (39)
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This paper proposes a varactor-tuned microstrip combline bandpass filter (BPF) that is loaded with lumped series resonators instead of the short-circuited end of combline. This configuration has the advantage of enhancing the tunability of the suggested BPF by varactor diodes in series resonators, which leads to a wide tuning range even with a small capacitance ratio (Cratio) of ... View full abstract»

• ### Cascaded Coupled Line Filter With Reconfigurable Bandwidths Using LCP Multilayer Circuit Technology

Publication Year: 2012, Page(s):1577 - 1586
Cited by:  Papers (18)
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This paper presents a new design method for reconfigurable coupled line filters. The main aim is to develop an analytical design procedure for designing this type of reconfigurable filter with any orders and bandwidths. The new design procedure allows not only making the design easy, but also increasing the passband performance by eliminating the impedance transformers needed for matching purposes... View full abstract»

• ### Compact, Low-Loss, Wideband, and High-Power Handling Phase Shifters With Piezoelectric Transducer-Controlled Metallic Perturber

Publication Year: 2012, Page(s):1587 - 1594
Cited by:  Papers (8)
| | PDF (1671 KB) | HTML

Compact phase shifters with large phase shift, low loss, and high-power-handling capability are desired for a variety of applications. In this paper, a new type of compact meander line phase shifter with metallic perturber controlled by a piezoelectric transducer (PET) has been designed, fabricated, and tested. The new phase-shifter design led to a large phase shift of 360° with a control v... View full abstract»

• ### An All-Metal Micro-Relay With Bulk Foil Pt–Rh Contacts for High-Power RF Applications

Publication Year: 2012, Page(s):1595 - 1604
Cited by:  Papers (7)
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This paper describes the performance of stainless-steel micro-relays, with platinum-rhodium metal foil contact elements, in handling high-power RF signals. The electrical and thermal responses are described for electrostatically actuated three-terminal micro-relays that are directly assembled on printed circuit boards. The preliminary designs have footprints of 6.4 mm2. Fabricated relay... View full abstract»

• ### A Narrowband CMOS Ring Resonator Dual-Mode Active Bandpass Filter With Edge Periphery of 2% Free-Space Wavelength

Publication Year: 2012, Page(s):1605 - 1616
Cited by:  Papers (5)
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This paper presents a monolithic transmission- line-based ring resonator dual-mode active bandpass filter (BPF) fabricated in a standard 0.13-μm complementary metal-oxide-semiconductor (CMOS) technology. The dual-mode ring resonator comprises a quasi-TEM complementary-conductive- strip transmission-line loop and a shunt metal-insulator-metal perturbation capacitor. Two CMOS cross-coupled pa... View full abstract»

• ### Design and Analysis of a $W$-band Divide-by-Three Injection-Locked Frequency Divider Using Second Harmonic Enhancement Technique

Publication Year: 2012, Page(s):1617 - 1625
Cited by:  Papers (11)
| | PDF (1808 KB) | HTML

In this paper, we present design and analysis of a W-band divide-by-three injection-locked frequency divider (ILFD) in 90 nm CMOS process. Based on the proposed topology, the locking range can be enhanced without additional dc power consumption due to the boost of the second harmonic in the ILFD, and the small input capacitance is more feasible for W -Band PLL integration. The lockin... View full abstract»

• ### A Full 360$^{circ}$ Vector-Sum Phase Shifter With Very Low RMS Phase Error Over a Wide Bandwidth

Publication Year: 2012, Page(s):1626 - 1634
Cited by:  Papers (16)
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An innovative vector-sum phase shifter with a full 360° variable phase-shift range in 0.18-μm CMOS technology is proposed and experimentally demonstrated in this paper. It employs an I/Q network with high I/Q accuracy over a wide bandwidth to generate two quadrature basis vector differential signals. The fabricated chip operates in the 2.3-4.8 GHz range. The root-mean-square gain err... View full abstract»

• ### Graphical Analysis of Stabilization Loss and Gains for Three-Port Networks

Publication Year: 2012, Page(s):1635 - 1640
| | PDF (2555 KB) | HTML

This paper presents the graphical analysis of stabilization loss and gains for three-port networks. The analysis considers the three-port stabilization loss, the three-port maximum available gain and the three-port maximum stable gain, which are functions of three-port S-parameters and third port termination Γ3. Extending its advantages, the three-port quasi-invariant stab... View full abstract»

• ### Low-Power Very Low-Noise Cryogenic SiGe IF Amplifiers for Terahertz Mixer Receivers

Publication Year: 2012, Page(s):1641 - 1648
Cited by:  Papers (7)
| | PDF (1418 KB) | HTML

State-of-the-art radio astronomy terahertz receivers utilize clusters of super-conducting mixers with cryogenic IF amplifiers. The critical parameters of the IF amplifiers are noise temperature, bandwidth, power consumption, input return loss, and physical size. This paper presents test data on three approaches to the IF amplifier; two are silicon-germanium (SiGe) monolithic microwave integrated c... View full abstract»

Publication Year: 2012, Page(s):1649 - 1657
Cited by:  Papers (22)
| | PDF (1608 KB) | HTML

This paper presents a comprehensive theory of a dual-frequency complex load-matching technique based on transmission lines. The theoretical analysis is insightfully described, and the applicable regions of the design equations are specified. To substantiate the theory, a corresponding methodology is proposed to design a dual-band 10/24-GHz amplifier, which is fabricated by standard 0.13-μm ... View full abstract»

• ### A 30.8-dBm Wideband CMOS Power Amplifier With Minimized Supply Fluctuation

Publication Year: 2012, Page(s):1658 - 1666
Cited by:  Papers (9)
| | PDF (2042 KB) | HTML

A wideband design method for a twisted eight-shape transformer is introduced with the design guidelines. The supply modulation effect caused by the fluctuation of virtual ground is analyzed. To minimize the effect, the different matching capacitors are adopted at each port and an accurate virtual ground is positioned. For verification, a fully integrated linear CMOS power amplifier (PA) is impleme... View full abstract»

• ### A Nested-Reactance Feedback Power Amplifier for $Q$-Band Applications

Publication Year: 2012, Page(s):1667 - 1675
Cited by:  Papers (3)
| | PDF (2532 KB) | HTML

A power amplifier (PA) topology is presented that incorporates a feedback network around the transistor to satisfy matching requirements. Circuit parameters can be tuned for small- and large-signal circuit operation. The PA is fabricated in a 120-nm SiGe BiCMOS process and performs from 36 to 41 GHz. The PA achieves a saturated output power of 23 dBm and a peak power-added efficiency of 20% at 38 ... View full abstract»

• ### A Transformer-Coupling Current-Reuse SiGe HBT Power Amplifier for 77-GHz Automotive Radar

Publication Year: 2012, Page(s):1676 - 1683
Cited by:  Papers (13)
| | PDF (1946 KB) | HTML

This paper presents a pseudodifferential power amplifier for 77-GHz automotive radar. The circuit is fabricated in a SiGe HBT BiCMOS technology featuring bipolar transistors with fT/fmax of 230/280 GHz. The amplifier adopts a transformer-coupling current-reuse approach to improve both gain and efficiency. An interstacked transformer is also profitably adopted to reduce out... View full abstract»

• ### 60-GHz Dual-Conversion Down-/Up-Converters Using Schottky Diode in 0.18 $mu{hbox {m}}$ Foundry CMOS Technology

Publication Year: 2012, Page(s):1684 - 1698
Cited by:  Papers (19)
| | PDF (4150 KB) | HTML

Due to the benefits of Schottky diodes, 0.18-μm CMOS technology is being promoted for millimeter wave applications. In this paper, 60-GHz dual-conversion down-/up-converters using Schottky diodes are realized by using 0.18-μm foundry CMOS technology. A CoSi2-Si Schottky diode, fabricated on a lower doped N-well by blocking the threshold voltage adjustment implant, has a lo... View full abstract»

• ### Novel Coupling Structure for the Resonant Coaxial Probe

Publication Year: 2012, Page(s):1699 - 1708
Cited by:  Papers (7)
| | PDF (1677 KB) | HTML

Herein we present a technique for performing complex permittivity measurements with an overmoded, evanescently perturbed coaxial resonator at microwave frequencies. The design of a noninvasive electromagnetic coupling structure, which allows transmission measurements to be taken from one end of a resonant section of coaxial cable, is discussed in detail. Quasi-spectral information was obtained thr... View full abstract»

## Aims & Scope

The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design..

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## Meet Our Editors

Editor-in-Chief
Luca Perregrini
luca.perregrini@unipv.it

Editor-in-Chief
Jose Carlos Pedro
edit.tmtt@ua.pt