Search results for: Jia-Sheng Hong,

Items from 1 to 20 out of 77 results

article

Federated Learning: A Cross‐Institutional Feasibility Study of Deep Learning Based Intracranial Tumor Delineation Framework for Stereotactic Radiosurgery

Wei‐Kai Lee, Jia‐Sheng Hong, Yi‐Hui Lin, Yung‐Fa Lu, more

Journal of Magnetic Resonance Imaging > 59 > 6 > 1967 - 1975

Background Deep learning–based segmentation algorithms usually required large or multi‐institute data sets to improve the performance and ability of generalization. However, protecting patient privacy is a key concern in the multi‐institutional studies when conventional centralized learning (CL) is used. Purpose To explores the feasibility of a proposed lesion delineation for stereotactic radiosurgery...

article

Deep Learning Detection and Segmentation of Brain Arteriovenous Malformation on Magnetic Resonance Angiography

Jia‐Sheng Hong, Weir‐Chiang You, Ming‐Hsi Sun, Hung‐Chuan Pan, more

Journal of Magnetic Resonance Imaging > 59 > 2 > 587 - 598

Background The delineation of brain arteriovenous malformations (bAVMs) is crucial for subsequent treatment planning. Manual segmentation is time‐consuming and labor‐intensive. Applying deep learning to automatically detect and segment bAVM might help to improve clinical practice efficiency. Purpose To develop an approach for detecting bAVM and segmenting its nidus on Time‐of‐flight magnetic resonance...

article

Mode selective bandpass filter with high selectivity based on thirty‐second‐mode circular SIW resonator

Sheng Zhang, Jin‐Chuan She, Meng‐Han Tong, Jia‐Sheng Hong

Microwave and Optical Technology Letters > 63 > 7 > 1820 - 1825

In this paper, a thirty‐second‐mode circular substrate integrated waveguide resonator (TMCSIWR) is firstly investigated, which well retains the fundamental mode and high‐order modes (TM_0n0 modes) in circular SIW resonator (CSIWR) for stable transmission. Considering miniaturization, high Q and multi frequency selection of TMCSIWR systematically, each TM_0n0 mode in TMCSIWR can be effectively selected...

article

Accelerated white matter lesion analysis based on simultaneous T₁ and T₂^∗ quantification using magnetic resonance fingerprinting and deep learning

Ingo Hermann, Eloy Martínez‐Heras, Benedikt Rieger, Ralf Schmidt, more

Magnetic Resonance in Medicine > 86 > 1 > 471 - 486

Purpose To develop an accelerated postprocessing pipeline for reproducible and efficient assessment of white matter lesions using quantitative magnetic resonance fingerprinting (MRF) and deep learning. Methods MRF using echo‐planar imaging (EPI) scans with varying repetition and echo times were acquired for whole brain quantification of

T_{1}

and

T_{2}^{*}

in 50 subjects with multiple sclerosis (MS) and...

article

Two miniaturized triple‐band filters based on 90⁰ sector substrate integrated waveguide

Sheng Zhang, Ya Guo, Yu‐Yu Zhou, Jia‐Sheng Hong

Microwave and Optical Technology Letters > 62 > 12 > 3820 - 3828

Two kinds of triple‐band filters based on 90⁰ sector substrate integrated waveguide (SSIW) are firstly investigated. The resonant frequencies of SSIW are deduced by analogy with a circular SIW cavity. By contrast, SSIW cavity is not only easier to suppress higher‐order modes than the circular SIW cavity, but also easier to cascade multiple cavities. Two kinds of miniaturization filters are realized...

article

Computer‐aided design of microstrip extracted‐pole lossy filter

Zhou Zhou, Jia‐Sheng Hong

International Journal of RF and Microwave Computer‐Aided Engineering > 28 > 5 > n/a - n/a

In this article, computer‐aided design of a new type of microstrip lossy filter is described. The new type of lossy filter is realized by introducing resistive cross couplings into a microstrip extracted‐pole filter to achieve a flat passband. The high selectivity is achieved by introducing 2 transmission zeros using 2 extracted poles, which can be adjusted. An equivalent circuit model is established...

article

A novel triple‐band bandpass filter based on equilateral triangle substrate integrated waveguide

Sheng Zhang, Jia Yu Rao, Jun Jie Cheng, Jia Sheng Hong, more

Microwave and Optical Technology Letters > 60 > 3 > 575 - 578

A novel compact triple‐mode triple‐band bandpass filter (TB‐BPF) based on equilateral triangle substrate integrated waveguide is first proposed. The first passband response is achieved by the fundamental modes of the first and third cavities. To obtain the second and third passbands, a new postperturbation method is proposed. And based on it, the perturbed TM₁₀₁ and TM₂₀₁ modes of the second cavity...

article

Dual-Wideband Filtering Power Divider With Good Isolation and High Selectivity

Xuedao Wang, Jianpeng Wang, Gang Zhang, Jia-Sheng Hong, more

IEEE Microwave and Wireless Components Letters > 2017 > 27 > 12 > 1071 - 1073

A new microstrip dual-wideband filtering power divider (FPD) is presented in this letter. The proposed device is mainly composed of a resonator loaded quarter-wavelength (

$\lambda $

/4) three-line coupled structure and a modified isolation network. To illustrate the design principle of the proposed FPD, equivalent circuits of the structure under the even-/odd-mode excitations are provided with the...

article

Microstrip/Coplanar Waveguide Hybrid Bandpass Filter With Electromagnetic Coupling

Jian-Kang Xiao, Ning Zhang, Jian-Guo Ma, Jia-Sheng Hong

IEEE Microwave and Wireless Components Letters > 2016 > 26 > 10 > 780 - 782

Microstrip/coplanar waveguide (CPW) hybrid bandpass filter with electromagnetic (EM) coupling has been developed, and a hybrid tri-band bandpass filter has been proposed. For each passband, the filter center frequency can be easily controlled, and the bandwidth can be adjusted. The hybrid bandpass filters have simple topologies, high frequency selectivity, and multiple passbands. The tri-band filter...

article

Conductor-Backed CPW Bandpass Filters With Electromagnetic Couplings

Jian-Kang Xiao, Min Zhu, Jian-Guo Ma, Jia-Sheng Hong

IEEE Microwave and Wireless Components Letters > 2016 > 26 > 6 > 401 - 403

High selective bandpass filters (BPFs) using end-connected conductor-backed coplanar waveguide (CBCPW) have been proposed, and the electromagnetic (EM) couplings have been investigated. Filter transmission zeros (TZs) are attributed to the separated electric and magnetic coupling paths, and the additional coupling resonators are not desired. Either magnetic-dominant coupling or electric-dominant coupling...

chapter

Developing compact wideband filters using multilayer liquid crystal polymer technology

Zhang-Cheng Hao, Jia-Sheng Hong

2015 Asia-Pacific Microwave Conference (APMC) > 2 > 1 - 3

2015 Asia-Pacific Microwave Conference (APMC)

This paper reviews some recently developed compact wideband bandpass filters based on the multilayer liquid crystal polymer technology, including multilayer lump-element bandpass filter, multilayer multiple-mode filter and multilayer lump-element-resonator bandpass filter. Miniature techniques using the multilayer topologies on multilayer liquid crystal polymer substrates are described with some examples,...

article

Design of a compact dual‐band folded‐waveguide bandpass filter using multilayer waveguide resonators

Sultan Almorqi, Hussein Shaman, Jia‐Sheng Hong, Osama M. Haraz

International Journal of RF and Microwave Computer‐Aided Engineering > 25 > 9 > 780 - 788

A novel compact dual‐band bandpass filter based on multilayer folded‐waveguide (FWG) structure is presented in this article.In this design, slots are used to realize direct coupling between adjacent resonators and apertures are adopted to implement cross coupling between non‐adjacent resonators.A new technique of external quality factor of FWG resonator and coupling coefficients between different...

chapter

A compact dual-passband filter using multilayer structure

Zhang-Cheng Hao, Wei Hong, Jia-Sheng Hong

2013 IEEE International Wireless Symposium (IWS) > 1 - 4

2013 IEEE International Wireless Symposium (IWS)

This paper reports a compact dual-passband filter by using multilayer liquid crystal polymer technology. The investigated filter consists of two resonators on the middle metal layer, which can be independently designed for the two passbands. To achieve a compact size, the resonator for the upper passband is embedded in the resonator for the lower passband. Cross coupling between input and output ports...

article

A novel microstrip parallel‐coupled line structure for ultrawideband microwave filters

Hussein Shaman, Jia‐Sheng Hong

Microwave and Optical Technology Letters > 54 > 11 > 2510 - 2513

A novel configuration of microstrip three parallel‐coupled line structure is proposed in this letter. This new structure consists of only one section of three parallel‐coupled lines to design a compact ultrawideband (UWB) bandpass filter to obtain the Federal Communications Commission's spectrum mask. To create transmission zeros around the desired UWB passband, the middle line of the three coupled...

chapter

Multilayer interdigital ultra-wideband filter

Zhang-Cheng Hao, Jia-Sheng Hong

2011 IEEE MTT-S International Microwave Symposium > 1 - 4

2011 IEEE/MTT-S International Microwave Symposium - MTT 2011

A miniature ultra wideband (UWB) bandpass filter that uses a multilayer interdigital structure is presented in this paper. The quarter-wavelength resonators including microstrip line resonator and coplanar waveguide (CPW) resonator are vertically stacked to achieve a strong coupling for the designed UWB filter. By adopting multilayer configurations, a miniature footprint is achieved. A seven-pole...

chapter

Reconfigurable lowpass filter based on signal interference techniques

Miguel A. Sanchez-Soriano, Jia-Sheng Hong

2011 IEEE MTT-S International Microwave Symposium > 1 - 4

2011 IEEE/MTT-S International Microwave Symposium - MTT 2011

This paper presents a novel reconfigurable filtering block based on signal interference techniques. The topology consists of the connection in parallel of three transmission lines of different electrical lengths. The lines can be switched on/off through the use of p-i-n diodes. In this way, the signal paths and their interferences are controlled providing different states (different cutoff frequencies)...

chapter

Wideband bandpass filter with multiple reconfigurable bandwidth states

A Miller, Jia-Sheng Hong

The 40th European Microwave Conference > 1273 - 1276

2010 40th European Microwave Conference (EuMC)

This paper aims to develop a novel building block for designing tuneable wideband bandpass filters. The proposed circuit block mainly consists of short circuit coupled lines and short circuit stubs with pin diodes as tuning elements. This work aims to demonstrate a filter with four reconfigurable bandwidth states developed by combining two tuneable filter circuits designed previously. The filter has...

chapter

Microstrip quasi-elliptic function bandpass filter with improved tuning range

Wenxing Tang, Jia-Sheng Hong

The 40th European Microwave Conference > 751 - 754

2010 40th European Microwave Conference (EuMC)

This paper proposes a new type of varactor-tuned microstrip quasi-elliptic bandpass filter with improved tuning range. By employing the unique characteristic of the dual-mode open-loop resonator, that is, whose two operating modes (odd-and even-modes) do not couple each other, tuning the passband frequency becomes simple with single DC bias circuit. In addition, by using a wideband transformer, the...

chapter

UWB bandpass filter with switchable notching band using multilayer LCP technology

Zhang-Cheng Hao, Jia-Sheng Hong

The 40th European Microwave Conference > 17 - 20

2010 40th European Microwave Conference (EuMC)

This paper proposes a novel reconfigurable ultra wideband (UWB) bandpass filter with switchable notching band for ultra wideband communication systems. In this study, PIN diodes are used to switch the notching band and broadside coupling technique is adopted to design the notching resonator. A prototype of proposed filter has been designed with a 10 dB insertion loss bandwidth from 3.05 GHz to 10...

chapter

Dual-wideband bandpass filter for ultra wideband applications

Zhang-Cheng Hao, Jia-Sheng Hong

The 40th European Microwave Conference > 747 - 750

2010 40th European Microwave Conference (EuMC)

Novel dual-wideband bandpass filters are proposed by employing hybrid shunt short/open stubs in this paper. Transmission line model is established for analyzing and designing proposed BPF. Shunt open stubs are integrated between adjacent hybrid shunt short/open stubs to suppress out-of-band harmonic response. As demonstration, a dual-band bandpass filter cantered at 3.79/8.55 GHz is designed, fabricated...

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BAND-PASS FILTERS (41)
MICROWAVE FILTERS (34)
BAND PASS FILTERS (32)
MICROSTRIP FILTERS (32)
RESONATOR FILTERS (28)
FILTERING THEORY (16)
ULTRA WIDEBAND TECHNOLOGY (15)
LIQUID CRYSTAL POLYMERS (13)
PASSBAND (13)
BANDPASS FILTER (12)
MICROSTRIP FILTER (11)
ULTRA WIDEBAND COMMUNICATION (10)
VARACTORS (10)
NONHOMOGENEOUS MEDIA (9)
NOTCH FILTERS (9)
TUNING (9)
UWB BANDPASS FILTER (9)
BAND-STOP FILTERS (8)
COUPLINGS (8)
INSERTION LOSS (8)
PROTOTYPES (8)
DUAL BAND (7)
TUNABLE FILTER (7)
BANDPASS FILTER (BPF) (6)
BANDWIDTH (6)
LIQUID CRYSTAL POLYMER (LCP) (6)
MICROSTRIP (6)
RESONATORS (6)
BANDPASS FILTERS (5)
IMPEDANCE (5)
MICROSTRIP LINES (5)
MICROSTRIP RESONATORS (5)
P-I-N DIODES (5)
POLES AND ZEROS (5)
SUBSTRATES (5)
ULTRA WIDEBAND BANDPASS FILTER (5)
DUAL-MODE RESONATOR FILTER (4)
FULL-WAVE SIMULATION (4)
LIQUID CRYSTAL POLYMER (4)
MICROWAVE THEORY AND TECHNIQUES (4)
MULTILAYERS (4)
TRANSMISSION LINE FILTERS (4)
TRANSMISSION LINES (4)
TRANSMISSION ZERO (4)
ULTRA WIDEBAND (UWB) (4)
ULTRA-WIDEBAND (UWB) (4)
VECTOR NETWORK ANALYZER (4)
WIDEBAND (4)
BANDPASS FILTERS (BPFS) (3)
BANDSTOP FILTER (3)
DISTRIBUTED HIGHPASS FILTER (3)
DUAL-MODE RESONATOR (3)
ELECTROMAGNETIC COUPLING (3)
ELECTROMAGNETIC SIMULATION (3)
FRACTIONAL BANDWIDTH (3)
FREQUENCY (3)
FULL-WAVE ELECTROMAGNETIC SIMULATION (3)
HARMONICS SUPPRESSION (3)
HIGH-PASS FILTERS (3)
MICROSTRIP LINE (3)
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MULTILAYER LIQUID CRYSTAL POLYMER TECHNOLOGY (3)
RESONANT FREQUENCY (3)
SHORT-CIRCUITED STUBS (3)
SWITCHES (3)
TRANSMISSION ZEROS (3)
TUNABLE CIRCUITS AND DEVICES (3)
ULTRA WIDEBAND RADAR (3)
ULTRAWIDEBAND BANDPASS FILTER (3)
UWB FILTERS (3)
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DUAL-MODE OPEN-LOOP RESONATOR (2)
ELECTROMAGNETIC WAVEGUIDES (2)
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EM SIMULATIONS (2)
FCC (2)
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FULL-WAVE SIMULATOR (2)
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HIGH IMPEDANCE MICROSTRIP LINES (2)
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INFONA - science communication portal

Search results for: Jia-Sheng Hong,

Federated Learning: A Cross‐Institutional Feasibility Study of Deep Learning Based Intracranial Tumor Delineation Framework for Stereotactic Radiosurgery

Deep Learning Detection and Segmentation of Brain Arteriovenous Malformation on Magnetic Resonance Angiography

Mode selective bandpass filter with high selectivity based on thirty‐second‐mode circular SIW resonator

Accelerated white matter lesion analysis based on simultaneous T₁ and T₂^∗ quantification using magnetic resonance fingerprinting and deep learning

Two miniaturized triple‐band filters based on 90⁰ sector substrate integrated waveguide

Computer‐aided design of microstrip extracted‐pole lossy filter

A novel triple‐band bandpass filter based on equilateral triangle substrate integrated waveguide

Dual-Wideband Filtering Power Divider With Good Isolation and High Selectivity

Microstrip/Coplanar Waveguide Hybrid Bandpass Filter With Electromagnetic Coupling

Conductor-Backed CPW Bandpass Filters With Electromagnetic Couplings

Developing compact wideband filters using multilayer liquid crystal polymer technology

Design of a compact dual‐band folded‐waveguide bandpass filter using multilayer waveguide resonators

A compact dual-passband filter using multilayer structure

A novel microstrip parallel‐coupled line structure for ultrawideband microwave filters

Multilayer interdigital ultra-wideband filter

Reconfigurable lowpass filter based on signal interference techniques

Wideband bandpass filter with multiple reconfigurable bandwidth states

Microstrip quasi-elliptic function bandpass filter with improved tuning range

UWB bandpass filter with switchable notching band using multilayer LCP technology

Dual-wideband bandpass filter for ultra wideband applications

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