Results 21 to 30 of about 209,502 (272)

Analysis Method of Bending Effect on Transmission Characteristics of Ultra-Low-Profile Rectangular Microstrip Antenna

open access: yesSensors, 2022
With the advent of wearable communication devices, microstrip antennas have developed multiple applications due to their ultra-low-profile properties. Therefore, it is essential to analyze the problem of frequency shift and impedance mismatch when the ...
Jiaying Zhang   +5 more
doaj   +1 more source

Elf: computer automation and error correction for a microwave network analyzer [PDF]

open access: yes, 1988
A microwave measurement system has been developed that combines a personal computer (PC) and an conventional vector network analyzer to yield a full complex-error-corrected automatic network analyzer.
Compton, Richard C.   +2 more
core   +1 more source

PRECISE Photonic Hybrid Electromagnetic Solver

open access: yesIEEE Photonics Journal, 2022
PRECISE, Photonic hybRid EleCtromagnetIc SolvEr, is a Matlab-based library to model large and complex photonic integrated circuits. Each circuit is modularly described in terms of waveguide segments connected through multi-port nodes.
Davide Bazzanella   +4 more
doaj   +1 more source

Efficient enhancements in spectral domain method to speed up open planar circuit analysis [PDF]

open access: yes, 1998
The spectral domain method is a very fast and powerful technique to analyse planar microwave circuits. Available techniques for simulating the excitation of open planar microwave circuits are not very effective at relatively low frequencies.
Balik, HH, Railton, CJ
core   +2 more sources

Negative Group Delay Theory of a Four-Port RC-Network Feedback Operational Amplifier

open access: yesIEEE Access, 2019
An innovative negative group delay (NGD) theory based on a unity direct chain feedback (UDCF) circuit topology is developed in this paper. This NGD circuit is an active cell constituted by an operational amplifier in feedback with a four-port RC-network.
Fayu Wan   +6 more
doaj   +1 more source

Steady state analysis of Chua's circuit with RLCG transmission line [PDF]

open access: yes, 1999
In this paper we present a new technique to compute the steady state response of nonlinear autonomous circuits with RLCG transmission lines. Using multipoint Pade approximants, instead of the commonly used expansions around s=0 or s/spl rarr//spl infin ...
Bonet Dalmau, Jordi   +2 more
core   +1 more source

Analysis of the Harmonic Transmission Characteristics of HVDC Transmission Based on a Unified Port Theory Model

open access: yesIEEE Access, 2020
The application of power electronics can introduce flexibility into power systems, but it can also cause harmonic problems. As a typical application of power electronics, high-voltage direct current (HVDC) transmission exhibits very prominent harmonic ...
Dui Liu, Xiaohua Li, Zexiang Cai
doaj   +1 more source

Properties of periodic arrays of symmetric complementary structuresand their application to grid amplifiers [PDF]

open access: yes, 1998
Deschamps' theorem for n-terminal complementary structures is reviewed. An extension to Deschamps' theorem for a class of three-terminal bounded structures with one axis of symmetry is presented.
Moussessian, Alina   +2 more
core   +1 more source

Bandpass Negative Group Delay Theory of Fully Capacitive Δ-Network

open access: yesIEEE Access, 2021
A particularly original negative group delay (NGD) theory of $\Delta $ -topology is developed in the present paper. The NGD three-port topology is a passive circuit purely constituted by capacitors network. The model of the proposed $\Delta $ -topology
Fayu Wan   +8 more
doaj   +1 more source

High-Order Dual-Port Quasi-Absorptive Microstrip Coupled-Line Bandpass Filters [PDF]

open access: yes, 2020
In this article, we present the first demonstration of distributed and symmetrical all-band quasi-absorptive filters that can be designed to arbitrarily high orders.
Li, Y, Liu, X, Wu, X
core  

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