The observed spectral bump in cosmic-ray (CR) proton and helium spectra, along with the phase amplitude evolution of CR dipole anisotropy, provide plausible yet indirect evidence for presence a nearby source. This study investigates potential giant molecular clouds (GMCs) located near solar system to act as natural probes CRs from source, their gamma-ray emissions serving indicators spatial variations flux within neighborhood resulting this We show that accounting data, could imprint...

The concept, principle, and method of microwave radiometric imaging with mirrored aperture synthesis (MAS) were proposed by the Huazhong University Science Technology (HUST), Wuhan, China. MAS can achieve higher spatial resolution without extending size antenna array. However, principle has not been sufficiently validated practical experiments. To solve this problem, an innovative experiment system at V-band (MAS-V) developed HUST. Experiments on interference fringe pattern, resolution, as...

A switchable filtering diplexer utilizing a reused resonator is proposed to reduce the size and insertion loss. This consists of two multi-coupled filters which reuse L-shaped resonator. The co-design input matching network shared simplifies diplexer's architecture reduces loss further. fabricated demonstrates 1.3 dB@ 2.35 GHz 1.34 3.5 GHz, fractional bandwidth 25%@ 28%@ respectively. occupied area as small 12 × 20 mm2. Compared with reported state-of-the-arts, achieves lower smaller simultaneously.

High-sensitivity super-regenerative receivers (SRXs) are demonstrated at 96 and 135 GHz, respectively, in this paper. They based on high-Q quench-controlled metamaterial resonators with a differential transmission line loaded split-ring resonator (DTL-SRR) complementary (DTL-CSRR) 65-nm CMOS. High-Q oscillatory amplifications established by the sharp stopband introduced resonators. As such, high detection sensitivity is achieved for SRXs millimeter-wave regions. The fabricated 96-GHz...

This paper presents a low switching-loss Dicke radiometer for W-band passive imaging systems. The equivalent switching loss introduced by the single-pole-double-throw (SPDT) switch in conventional is significantly reduced proposed distributed amplifier (SPDT-DA), which leads to radical improvement on receiver's noise performance. consisting of SPDT-DA, four-stage (LNA) and power detector fully integrated 0.13- μm SiGe BiCMOS chip. With 0.93-dB at 91 GHz total figure (NF) 8.4 dB achieved...

High output power density millimeterwave (mm-wave) signal sources are demonstrated at 60 and 140 GHz by a magnetic plasmon waveguide (MPW) based in-phase coupled oscillator network (CON) in 65-nm CMOS. Each unit-cell is designed an MPW-based low-loss inter-digital zero-phase coupler (ZPC). With multiple ZPC unit-cells, high mm-wave generated the center of CON combination. A 60-GHz CON-based source implemented with four unit-cells compact core chip area 0.11 mm <sup...

Slotline-based balanced filter with ultra-wide stopband is proposed in this brief. The integrates split-ring slotline resonators (SRSRs) and π-type structures, which not only increase the selectivity, but also enhance suppression a range of 7.1 times as large center frequency. SRSRs are implemented by two symmetrically folded stepped-impedance used second-order resonant circuit to obtain high-selectivity bandpass response. Moreover, structure enhances harmonic rejection significantly....

This letter proposes a novel high-selectivity quad-band bandpass filter (BPF) with nine transmission zeros (TZs) using asymmetrical interdigital coupled lines and circular spiral lines. By deploying five coupling lines, BPF seven TZs is achieved. With adding two open additional independent are obtained. The controllable contribute to selectivity improvement significantly. fabricated demonstrates four passbands located at 2.4, 3.5, 4.5, 5.8 GHz, which suitable for Wi-Fi 5G communication....

This brief presents a dual-band balun filter based on novel slotline multi-mode T-line loaded middle-shorted complementary split-ring resonator (TLMS-CSRR) with wide bandwidth and high selectivity. Coupled τ-shaped π-shaped stub as input output microstrip-slotline transition structure respectively, rejection between two passbands at harmonic frequencies are realized. With the TLMS-CSRR, proposed obtains five transmission poles (TPs) four zeros (TZs) which broaden sharpen roll-off skirt...

In this letter, a high-gain and selectivity W-band LNA using 0.13 <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">$\mu{\rm m}$</tex></formula> SiGe BiCMOS is proposed. A Q-enhanced cascode approach with filter synthesis passband-forming technique was employed to achieve gain improvement simultaneously. The amplifier achieved of above 45 dB noise figure 6–8.3 at 77–101 GHz power consumption 19.2 mW....

A novel tunable reflectionless dual-passband filter (T-RDBPF) based on a single multi-mode resonator and absorptive networks is proposed firstly with independently passbands, no reflection at full band, as well absorbed harmonic signals. By increasing the admittance radios between parallel resonant paths in resonator, two individually controlled passbands independent poles can be achieved. To correspond to poles, series loops are employed generate zeros network, thus consecutive absorptivity...

This study aims to explore an optimized deep-learning model for automatically classifying spinal osteosarcoma and giant cell tumors. In particular, it provide a reliable method distinguishing between these challenging diagnoses in medical imaging. research employs DenseNet with self-attention mechanism enhance feature extraction capabilities reduce misclassification differentiating The utilizes multi-scale map improved classification accuracy. paper delves into the practical use of...

This brief presents the design of a band-tunable 60-GHz CMOS power amplifier using 65-nm standard technology. To achieve high gain and PAE over whole 7-GHz frequency band, this utilizes differential band switching circuit to tune center channel in use, whereas high-Q transformer matching deep-neutralized pairs are employed narrow bandwidth. The achieves saturated output 12.3 dBm peak 20.4% with 1-V supply 63-mA current. is 17.1 dB at 59 GHz 16.2 53.5 for two different bands, respectively.

In this paper, a fully-integrated transimpedance amplifier with ultra-large dynamic range and automatic gain control function is presented. By first deploying three AGC-controlled current paths in the low noise pre-amplifier, (TIA) can accommodate significantly enlarged input current. Meanwhile, of adjustment enhanced utilizing (AGC) circuit, tunable pre-amplifier (PrA), variable (VGA). Besides above blocks, TIA size 1.26 × 1.33 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...

A novel reflectionless triple‐band bandpass filter (RTBPF) with compact structure and high controllability is proposed by combing the reused multi‐mode resonator (MMR) a coupled‐line based absorptive network. The MMR coupled to feeding lines share its even‐mode resonating points as transmission poles (TPs) in branch zeros (TZs) bandstop branch. By employing network, additional TZs TPs are obtained Since these resonances network controlled independently, bandwidth centre frequency of RTBPF...

This paper presents a fast-locking 28 Gbaud PAM-4 CDR targeting for burst-mode operation. By implementing an oversampling scheme tailored the preamble stage signal according to pattern appearance regulation, trade-off between loop bandwidth and convergence time in conventional is avoided. In addition, reduce power consumption mode, 3-phase sampling equivalent 3 times-oversampling with minimal phase shift range of 30° proposed. The also includes Bang-Bang locking 5 MHz. Realized 65nm bulk...

This study proposes a compact sept-band bandpass filter (BPF) with controllable centre frequencies and bandwidths. To achieve size low insertion loss, the deploys single multi-mode resonator abandons conventional source–resonator coupling structure to reduce order of sections. The fabricated BPF demonstrates seven passbands located at 1.0, 1.6, 2.3, 2.8, 3.5, 4.2, 5 GHz, which are targeted for global system mobile communications (GSM), wireless local area network, WIFI, 4G/5G communication....

This paper presents a high sensitivity and dynamic range 25 Gbaud optical receiver including the CMOS transimpedance amplifier (TIA) Ge-on-Si photodetector. In TIA with DC bypassing path, instead of deploying voltage-controlled path fixed feedback strength, current-controlled <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$g_{\mathrm {m}}$ </tex-math></inline-formula> -adjusting ability is proposed to...

A <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${V}$ </tex-math></inline-formula> -band heterodyne radiometer in SiGe BiCMOS employing a capacitor-reused absorptive inter-stage matching network is firstly proposed, which prevents from circulator, resistive attenuator or two quadrature couplers the conventional high-sensitivity cascaded receiver. This consists of five-stage low noise amplifier (LNA) with...

This article presents an <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$L$ </tex-math></inline-formula> - and notation="LaTeX">$C$ -band radiometer with integrated wideband active hot cold loads (AHCLs). By seamlessly integrating the distributed low noise amplifying unit power-combining unit, operational bandwidth of conventional AHCL is significantly enhanced. The proposed based on reused...

This paper analyzes the influence of Miller effect on gain performance cascode stage. A passive compensation network is proposed to cancel Cbc at millimeter-wave range without distinct penalty noise figure and stability. Using this network, stage can achieve a higher in wider bandwidth than other topologies. Furthermore, W-band amplifier based new designed fabricated using 0.13-μm BiCMOS process successfully. The has potential be used building blocks, which need improvement through cancellation.

A high output power and efficiency injection-locked millimeter-wave (mm-wave) signal source is demonstrated by zero-phase coupled oscillator network (CON) at 140GHz. Each unit-cell designed an inter-digital coupler with shift 0.4dB loss 70GHz, further doubled to 140GHz a push-push frequency doubler. With four in-phase unit-cells, generated the center of CON combination second harmonics doublers. Moreover, 9.7% frequency-tuning-range (FTR) centered 133.5GHz achieved inductive tuing each...

This brief proposes a wideband balun filter with ultrawide stopband utilizing shunt slotline coupled folded ring resonator (FRSR) and dual-feedback stubs (DFS). Utilizing the FRSR, there are four transmission poles (TPs) within passband ten zeros (TZs) in range of < 20 GHz generated, which contribute to large bandwidth, high selectivity, >10-dB harmonic suppression. In addition, two additional TZs generated by DFS can improve suppression >18 dB. meantime, design effectively reduces size...

This brief proposes a novel dual-wideband slotline power divider (DWSPD) with ultrawide stopband, which is suitable for the multi-band wireless communication system application. The proposed DWSPD mainly constructed two multi-mode T-stub loaded resonators (MTSRs), four folded structures (FSSs), microstrip-slotline transitions and isolation resistors. MTSR can generate transmission poles (TPs), forms wide passbands. Furthermore, FSS contributes to additional zeros (TZs), enhances harmonic...