An ultrawideband circularly polarized (CP) planar array antenna built by new radiation elements, the bold-C spiral in millimeter-wave band is presented this article. Using tightly coupled (TCA) technique, embedded CP element infinite has achieved both impedance bandwidth and 3 dB axial ratio (AR) of 50.7% covering 18.1-30.4 GHz for fixed broadside beam. Then, a feeding network designed using dielectric-based inverted microstrip gap waveguide (DIMGW) technology order to have compact layout....

Background A pathological decrease in the serum prealbumin level is closely associated with severity of various diseases and complications after surgery. Many patients suffer from a systemic inflammatory response local myocardial ischemia off-pump coronary artery bypass grafting, which related to an adverse prognosis. This study aimed explore relationship between early following addition its predictive value. Methods Data were retrospectively collected on undergoing grafting January 2014...

A compact lowpass filter (LPF) with sharp cutoff frequency response and wide rejection bandwidth is proposed. The proposed LPF has a simple structure comprises one microstrip coupled-line hairpin unit, spiral slot two open stubs. demonstration 3 dB at 2.0 GHz been designed fabricated. Theoretical simulated results are presented, which in good agreement the measured results.

This paper addresses the design of a medium voltage adjustable speed drive (ASD) utilizing benefits cascaded inverter technology while employing 24-pulse rectifier inspired front end. Rectifier ends ASDs introduce high level harmonics into utility grid, creating equipment overheating problems and distorting waveform near ASD's connection point. To greatly reduce these limiting cost, multilevel transformer with minimum number windings is used. reduces total harmonic current to less than 5%...

This study investigates the total ionizing dose effect in static random access memory (SRAM)-based field programmable gate array (FPGA). In addition toY ray whole-chip irradiation, focused synchrotron x-ray irradiation with beam size of 20 μm is also used. As a result, most vulnerable inner circuit SRAM-based FPGA determined directly. Circuit simulation executed to understand failure phenomenon further. The simulated results are consistent experimental results.

A dual-band balanced-to-balanced (BTB) filtering power divider (FPD) is presented, which can achieve an in-phase division with high selectivity. The proposed FPD composed of microstrip-to-slotline transition structures (MTSTSs), T-shaped slotline, and multiple stub-loaded resonators (SLRs). differential-mode (DM) response a steep performance generated by employing SLRs. By adjusting the electrical lengths SLRs gaps between each resonator microstrip lines, fractional bandwidth (FBW)...

Abstract A compact ultra‐wideband (UWB) band‐pass filter (BPF) with dual narrow notch‐bands based on a dual‐mode stepped impedance resonator (SIR) is presented.The proposed UWB employed broadside‐coupled microstrip ring‐coplanar waveguide structure. Two notch bands are obtained by introducing one coupled SIR metalized via hole to ground. Theoretical and simulated results presented, which in good agreement the measured results. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett...

A compact balanced microstrip tri-band bandpass filter (BPF) using short and open stubs loaded resonators (SOSLRs) is achieved in this article. Three differential-mode (DM) passbands can be adjusted by properly controlling the dimensions of stubs, first third DM center frequencies implemented independently. By introducing interdigital coupling lines, five transmission zeros (TZ) are to achieve a higher selectivity. The positions TZs controlled adjusting gaps between SOSLRs lines. In...

A broadband monolithic linear single pole, eight throw (SP8T) switch has been fabricated in 180 nm thin film silicon-on-insulator (SOI) CMOS technology with a quad-band GSM harmonic filter integrated passive devices (IPD) technology, which is developed for cellular applications. The antenna module (ASM) features 1.2 dB insertion loss on 2G bands and 0.4 3G bands, less than -45 isolation maximum -103 intermodulation distortion mobile front ends by applying distributed architecture adaptive...

A novel wide stopband coplanar waveguide (CPW) low pass filter (LPF) using quarter wavelength stepped impedance resonators (SIR) is presented. The bandstop characteristics of the short circuited stubs SIR are demonstrated. By cascading three tapered and a CPW spurline resonator, fabricated has sharp rejection with cutoff frequency 3.5 GHz, deep attenuation from 3.7 GHz to 11 lower than -24 dB. Good agreement between simulated measured results

Abstract Based on conventional Wilkinson power divider, two compact multi-band equal dividers (PDs) employing stub loaded stepped-impedance resonators with defected microstrip structure (SL-SIR-DMS) is proposed in this paper. The SL-SIR-DMS analyzed by even/odd mode method. It found that different structures can lead to frequency responses. In addition, using DMS, tri-band and even quad-band responses be easily achieved without increasing the resonator size. As verification, one PD are...

Abstract In this article, two dual-band microstrip bandpass filters (BPFs) with high selectivity and independently controllable passbands are designed based on three parallel-coupled lines (TPCLs). The first BPF proposed in paper is achieved by employing a pair of folded F-type resonators (FFRs) conventional TPCL structure. By adjusting the above parameters each FFR, center frequencies can be controlled easily. meantime, enhance coupling between source load, introduce multiple transmission...

Abstract A compact microstrip diplexer with a high isolation and improved out-of-band performance is proposed in this paper. The based on cascaded-quadruplet (CQ) bandpass filters (BPFs), which composed of λ/4 stepped-impedance resonators (SIRs). By employing the edge quasi-lumped coupling topology, passband selectivity can be achieved. Meanwhile, by appropriately adjusting impedance electric length ratios SIRs, stopband extended to 20 GHz rejection level 10 dB, 12.7 times fundamental...

A novel configurable frequency synthesizer based on delay-locked-loop (DLL) is presented in this paper, with maximum multiplication factor 10 and division 16. SRAM employed to store configuration data for different factor. Users only need change the stored embedded obtain needed. The output range from 25 MHz 1 GHz using tsmc 0.18 mum CMOS process parameters. locking time of DLL core 20 mus at 100 120 MHz. cycle-to-cycle jitter 60 ps.The circuit can be part a standard digital cell library...

With the electric and intelligent development of automobile industry, impact electromagnetic environment on vehicle becomes increasingly obvious manufacturers received a lot complaints about interference. Traditionally, tried to go actual interference investigate malfunction try solve problems, which is costly inefficient. In consideration inconvenience field test, method scene simulation test in EMC chamber proposed research vehicle’s susceptibility complex environment, including collection...

A balanced second-order dual-band bandpass filter (BPF) with independently controllable center frequencies and bandwidths based on coupled stepped-impedance resonators (SIRs) is designed in this article. To obtain a differential-mode (DM) response, two pairs of SIRs different resonant are employed the design. The DM passbands can be tuned by adjusting coupling gaps lengths corresponding resonators. In addition, three transmission zeros realized to enhance selectivity passbands....

ABSTRACT A multimode stub loaded resonator (SLR) is presented in this article. The proposed SLR can introduce four or five narrow passbands and has great flexibility to adjust the resonant frequencies. Due structural symmetry, resonators are analyzed using even/odd mode method. Based on analysis, two compact band‐pass filters (BPFs) with quad‐ quint‐band responses designed good agreement between simulated measured results observed. quad‐band filter outperformances other published ones and,...

Abstract In this paper, two single- and dual-band equal power dividers (PDs) integrated filtering responses are proposed using quarter-wavelength stepped-impedance resonators (SIRs). By appropriately adjusting the impedances electric length ratios of SIRs, structures can achieve compact sizes wide stop-band performances. addition, source-load coupling is applied to create a pair transmission zeros at each side pass-bands, which improve effectively frequency selectivity out-of-band rejection....

In this paper a low power radiation hardened 256K SRAM is presented. The dual interlocked storage cell (DICE) and layout techniques have been implemented to achieve hardened. A novel sense amplifier has proposed modified self-timing scheme with duplicate for operation adopted in SRAM. It consumed only 11% read dissipation compared the conventional control circuit, access time can decrease 19%

Abstract This article presents a compact branch‐line coupler (BLC) for balanced‐type circuit application. It was designed by utilizing cascading multisection and capacitance‐loading technique bandwidth increase size reduction individually. The proposed BLC simulated fabricated. Its physical length reduces 28.7%, while it performs as good the conventional one. measured results have agreement. method is valid performance design. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51:...

A novel configurable no dead-zone digital phase detector is proposed in this paper. As an embedded SRAM employed to store configuration data, detection sensitivity of the can be controlled by data according different input frequency. Besides, avoid adopting two flip-flops and generating three state during operation. The circuit part a standard cell library easily used field programmable gate array (FPGA). PD designed betake frequency range 25 MHz 200 MHz. Simulation result for realized with...

This paper presents a compact ultra-wideband (UWB) power divider (PD) with sharply rejected notch-band. The proposed UWB is realized by cascading one conventional Wilkinson and two folded shunt quarter-wavelength short-circuited stubs, spiral slot in symmetrical output ports. studied employed to generate the desired notched band. Good insertion/return losses high notch-band rejection are achieved as demonstrated both simulation experiment.

A new magnetic integrated parallel current sharing control method for silicon carbide (SiC) power devices is presented in this article. The problem of the application connected SiC analyzed. coupled inductance adopted to solve problem. Based on active-back converter, we establish theoretical model inductance, and figure out its working mechanism. device designed based mechanism, effectiveness determined through simulation. 12 V/10 output active-flyback converter prototype fabricated tested...

In this brief, a dual-band filtering power divider (FPD) with high selectivity and independently controllable passbands is designed.The proposed FPD consists of asymmetric folded F-type resonators (AFFRs) quarter-wavelength three parallel-coupled lines (TPCLs).The center frequencies the dual bands can be determined by adjusting physical lengths AFFRs.Meanwhile, TPCLs increase transmission paths introduce multiple zeros (TZs) to achieve selectivity.For demonstration, designed, fabricated,...