A novel dual-mode resonator with square-patch or corner-cut elements located at four corners of a conventional microstrip loop is proposed. One these patches corner cuts called the perturbation element, while others are reference elements. In proposed design method, transmission zeros created eliminated without sacrificing passband response by changing perturbation's size depending on simple transmission-line model used to calculate frequencies two zeros. It shown that nature coupling...

A novel dual-mode microstrip square loop resonator is proposed using the slow-wave and dispersion features of open-loop resonator. It shown that designed fabricated filter has a wide stopband including first spurious resonance frequency. Also, it size reduction about 50% at same center frequency, as compared with bandpass filters such patch, cross-slotted loop, ring filter.

A capacitively loaded coplanar waveguide (CPW) resonator has been studied. It shown that the proposed can be used to achieve a slow-wave effect without occupying extra surface area and it good performance as compared with conventional half-wavelength CPW resonator. Furthermore, dispersive effects have increased number of slots in periodically structures.

In order to reduce the size of dual-mode microstrip filters by keeping excellent performance, novel filter geometry is proposed. The includes a resonator based on meander structure. effect input/output feed lines located along straight line response investigated for filter. coupling between degenerate modes proposed discussed depending perturbation size. two bandpass with real axis and imaginary transmission zeros (TZs) are designed, fabricated, measured document validity description...

A novel compact topology based on only a single stub-loaded resonator (SLR) for single-wideband (WB) and dual-band (DB) filtering power dividers (FPDs) is proposed. Since the same SLR used both wideband operation, transition from to dual band (or vice versa) achieved by transmission zero (TZ) shifting method. The TZ controlled one of three loaded stubs in SLR. highly selective wide passband centered at 1.95 GHz with fractional bandwidths (FBW) 58%. two passbands are 1.66 2.37 FBW 18% 11.7%,...

A novel type of dual-mode microstrip bandpass filter using degenerate modes a square loop resonator with capacitively loaded open-loop arms is proposed. Such 0.75% bandwidth at the center frequency 1.603 GHz designed and fabricated to demonstrate design reduced-size filters. It shown that proposed has size reduction about 59% same frequency, as compared filters such patch, cross-slotted ring filter.

To reduce the size of microstrip dual-band bandpass filters (DBBPFs) by keeping excellent performance, a novel DBBPF configuration is proposed. The DBBPFs include two dual-mode resonators based on square loop structure that are located one within other to remove extra circuit area. open-loop stubs connected at end feed lines employed suppress harmonics. with real axis and imaginary transmission zeros designed, fabricated measured.

A novel coplanar slow-wave structure that has the form of an interdigitated-meander line is proposed in this letter for use MMIC's. simple analysis been carried out by using empirical equations available literature and with aid CAD packages. propagation velocity about 2.8/sup /spl times//10/sup 7/ m/s was measured. Comparisons between theoretical experimental results show good agreements.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

A dual-mode resonator with square patches attached to inner corners of a conventional microstrip loop is proposed. The two types coupling between the degenerate modes are described by changing perturbation's size for realization either Chebyshev or an elliptic function filter. novel type bandpass filter using this resonators developed. It shown that determines characteristic, whether it characteristic characteristic.

A stub-loaded U-shaped microstrip resonator (U-SLR) exciting two odd-modes and even-modes its applications to single-wideband dual-band bandpass filter (DB-BPF) are introduced. The parallel-coupled lines (PCLs) at input/output (I/O) ports can provide a wideband response by additional modes in the passband, so-called PCLs modes. In addition transmission poles (TPs) zeros (TZs) lower upper stopbands be created loaded stubs. compact size, high-selectivity, low insertion loss WB-BPF is designed,...

Interaction studies between the liquid metal and gas jet during laser cutting were made relationships various parameters influencing action identified theoretically. In theoretical analysis, effect of on process, due to momentum interface (gas-liquid) shear stress, considered. On experimental side, work was carried out in two parts. first part, mild steel at different thickness levels using an argon/oxygen mixture 5/1 pressure ratio 138 kPa total pressure. The depth resolidification around...

A compact, low-loss and narrowband dual-mode microstrip filter is proposed using degenerate modes of a patch resonator loaded with two narrow slots. The structure fed by inset lines connected directly to the centre adjacent edges notches. verified both simulation measurement.

A compact dual-band microstrip bandpass filter is proposed using dual-mode resonators. Two loop resonators, one within the other, are employed to obtain responses. Each resonator uses two loading elements excite dual modes. Distinct characteristics of these new types filters investigated full-wave electromagnetic simulations. It also found that there three finite-frequency transmission zeros. One them inherently associated with configuration. Four resonators demonstrated different asymmetric...

In this paper, design of a tunable dual-mode dualband microstrip bandpass filter is presented. The designed constructed by using two nested resonators (DMRs) having patch capacitances located at the lateral arms as reference elements. Varactor diodes are used instead perturbation elements in order to excite degenerate modes. Linear phase and quasi elliptical filtering characteristics can be independently obtained each passband band-widths also tuned both characteristics. For experimental...

A new type of dual-mode microstrip square-loop resonator that produces asymmetrical frequency responses is proposed. The coupling between degenerate modes the proposed discussed depending on perturbation size. effect non-orthogonal input/output feed lines located along a straight line response investigated using full-wave electromagnetic simulations. Two second-order bandpass filters this are designed, fabricated and measured to demonstrate exhibiting transmission zero (TZ) shifting...

A novel simple and understandable topology is proposed for dual-mode dual-band bandstop filters with asymmetric frequency response. Two microstrip square loop resonators are used to obtain the filter characteristic. Each resonator uses a perturbation element excite dual-modes. Distinct characteristics of new investigated using full-wave electromagnetic simulations. It also found that there five reflection zeros. Three them inherently associated topology, whereas other zeros near stopbands...

ABSTRACT Design of a novel ultra‐wideband (UWB) microstrip bandpass filter is presented by using square loop quintuple‐mode resonator (QMR) having open‐circuited stubs. The proposed has five resonant modes in UWB band range and coupled to Input/Output (IO) ports parallel‐coupled feed lines. first three resonance are resulted from the stub loaded resonator, whereas remaining two can be formed means coupling between stubs resonator. designed totally seven poles including resulting nature...

Abstract Dual‐mode microstrip bandstop filter, which has an inductive or capacitive perturbation element located at one of its corners, with a 90°‐bended λ/4 feeding line is proposed. The degenerate mode splitting conventional dual‐mode square loop resonator and the coupling coefficient between these modes are investigated. filter characteristic changed by size. Finally, novel designed realized using resonator. Two filters designed, fabricated, measured to demonstrate validity proposed...

In this article, a novel and simple design procedure for multibit chipless radio frequency identification (RFID) tags is introduced, which based on the characteristics of dual-mode loop resonator (DMLR) open-loop (OLR). By removing small patch element from symmetry axis DMLR, geometrical transition to an OLR obtain different codes can be achieved. Since DMLR provide dual- single-resonant frequencies, three observed using one resonator. Thus, 3 <formula...

In this paper, new N-way Wilkinson power dividers (WPDs) are represented by using slow-wave structures such as narrow slits loaded and meandered transmission lines. The slit lines used to represent the quarter wavelength of a conventional WPD for size reduction. Based on proposed approaches, 2-, 4- 8-way designed, simulated fabricated. fabricated -, circuits have been measured at center frequencies 2.03, 1.77, 1.73 GHz in an excellent agreement with predicted ones. also design types WPDs...

A new type of dual-mode resonator that produces asymmetrical frequency responses is proposed. The effect nonorthogonal input/output feed lines located along a straight line on filter response investigated for the filter. coupling between degenerate modes proposed microstrip discussed depending perturbation size. two samples asymmetric were designed, fabricated and measured to demonstrate design filters exhibiting transmission zero shifting property. one them characteristic with TZs in upper...