7 citations · 12 across the 10 of their papers we have counts for
10 papers
Where Entropy Is Measured Matters: Policy Geometry in Bounded Continuous-Control PPO
Yiyang He, Zhichun Zhou, Ziwei Wang +2
Many continuous-control policies are optimized as unbounded Gaussians and then mapped into bounded actions. We show that where entropy is measured changes the policy geometry learn…
Time-Reversal Characteristic Modes of Lossy Reciprocal Structures
Chenbo Shi, Jin Pan, Xin Gu +2
A time-reversal characteristic-mode decomposition is developed for reciprocal lossy electromagnetic structures. The formulation is built on a transmit--receive interpretation of re…
Hybrid Method of Moments and Generalized Scattering Matrix: Applications to Antennas in Radomes, Reflectors, and Implantable Media
Chenbo Shi, Shichen Liang, Xin Gu +2
Electromagnetic analysis of antennas embedded in or interacting with large surrounding structures poses inherent multiscale challenges: the antenna is electrically small yet geomet…
Generalized Scattering Matrix Framework for Modeling Implantable Antennas in Multilayered Spherical Media
Chenbo Shi, Xin Gu, Shichen Liang +1
This paper presents a unified and computationally efficient framework for modeling antennas embedded in spherically stratified media, applicable to implantable biomedical antennas…
Fast and Rigorous Modeling of Antenna--Medium Interactions Above Planar Stratified Media via the Generalized Scattering Matrix
Chenbo Shi, Shichen Liang, Xin Gu +1
A rigorous and computationally efficient method is presented for evaluating the reflection coefficients of antennas operating above planar layered media. The approach reformulates…
Generalized Scattering Matrix Synthesis: Independent Region Decomposition for Hybrid Antenna--Scatterer Systems
Chenbo Shi, Shichen Liang, Jin Pan +2
This paper presents a unified formulation for synthesizing the generalized scattering matrix (GS-matrix) of hybrid electromagnetic systems comprising arbitrary numbers of antennas…
Synthesis Method for Obtaining Characteristic Modes of Multi-Structure Systems via independent Structure T-Matrix
Chenbo Shi, Xin Gu, Shichen Liang +2
This paper presents a novel and efficient method for characteristic mode decomposition in multi-structure systems. By leveraging the translation and rotation matrices of vector sph…
Generalized Scattering Matrix of Antenna: Moment Solution, Compression Storage and Application
Chenbo Shi, Jin Pan, Xin Gu +2
This paper presents a computation method of generalized scattering matrix (GSM) based on integral equations and the method of moments (MoM), specifically designed for antennas exci…
Computation of Characteristic Mode for Regional Structure of Interconnected Metal Bodies
Chenbo Shi, Jin Pan, Xin Gu +2
Existing methods for calculating substructure characteristic modes require treating interconnected metal structures as a single entity to ensure current continuity between differen…
Scattering-Based Characteristic Mode Theory for Structures in Arbitrary Background: Computation, Benchmarks, and Applications
Chenbo Shi, Jin Pan, Xin Gu +2
This paper presents a novel approach for computing substructure characteristic modes. This method leverages electromagnetic scattering matrices and spherical wave expansion to dire…