Wideband RFI Cancellation for High-sensitivity Phased Array Receivers with True Time Delays and Truncated Hadamard Projection

<div>Radio frequency interference (RFI) is a significant challenge for high-sensitivity phased array instruments. RFI can be suppressed using digital signal processing, but to improve dynamic range for wideband RFI, it can be desirable to remove interference in the analog domain before sampling. In previous work, it has been shown that analog true time delay (TTD) stages with a truncated Hadamard transform can place a wide-band spatial null on RFI from a given direction of arrival. We show that TTD and Hadamard projection is mathematically equivalent to the classical, narrow-band subspace projection beamformer, but with a structure that allows efficient implementation in analog circuitry. Simulation results show that TTD and Hadamard projection can place deep nulls on wideband RFI signals and still achieve SNR performance comparable to the optimal digital maximum signal to interference and noise ratio beamformer.</div>

Wideband RFI Cancellation for High-sensitivity Phased Array Receivers with True Time Delays and Truncated Hadamard Projection

<div>Radio frequency interference (RFI) is a significant challenge for high-sensitivity phased array instruments. RFI can be suppressed using digital signal processing, but to improve dynamic range for wideband RFI, it can be desirable to remove interference in the analog domain before sampling. In previous work, it has been shown that analog true time delay (TTD) stages with a truncated Hadamard transform can place a wide-band spatial null on RFI from a given direction of arrival. We show that TTD and Hadamard projection is mathematically equivalent to the classical, narrow-band subspace projection beamformer, but with a structure that allows efficient implementation in analog circuitry. Simulation results show that TTD and Hadamard projection can place deep nulls on wideband RFI signals and still achieve SNR performance comparable to the optimal digital maximum signal to interference and noise ratio beamformer.</div>

BEAM or MFA I inspired Nv Neurons using SPI and a MCU for line and line based polygon detection.

A companion publication to an opamp based Nv neuron architecture paper, this publication explores the use of inexpensive mouse optical sensors for shape recognition as polygons from line recognition networks, in sensor and two motor fusion in a TOMU/WOMU circuit using the SPI bus and a master -slave architecture. Lie Computability, is defined on discrete Tensor architectures, similar to computation on fields, in future work, field computing is proven to have the same complexity as integer lattices, though Lie Lattices embeddings in integer and complex lattices, proving MFA I and II architectures are equivalent in complexity, in both analog and digital worlds. Keywords: Tensor Flow, Tensor Architectures, Unsupervised Learning, Emergent A.I , procedural A.I, MFA I and II architectures, neuromodulation, SoC , TOMU/WOMU, SPI bus. What: We consider inexpensive 18 by 18 matrix 64 gray levels SPI interface, based photodetector components of optical mice. In this paper we consider the use of the SPI interface for the use of a master slave system of interface of an MCU to the optic processor for creating of BEAM circuitry using inexpensive MCU circuitry, such as the TOMU/WOMU. How: MFA I and MFA II architectures are fulfilled in both digital and analog circuitry, with a network architecture defined by a tensor notation, as described in a companion paper. Why: A digital fulfilment of a tensor architecture is defined and compared to Lego Mindstorm based deep learning and procedural algorithms for semantic segmentation and classification algorithms.

BEAM or MFA I inspired Nv Neurons using SPI and a MCU for line and line based polygon detection.

A companion publication to an opamp based Nv neuron architecture paper, this publication explores theuse of inexpensive mouse optical sensors for shape recognition as polygons from line recognitionnetworks, in sensor and two motor fusion in a TOMU/WOMU circuit using the SPI bus and a master-slave architecture. Lie Computability, is defined on discrete Tensor architectures, similar to computationon fields, in future work, field computing is proven to have the same complexity as integer lattices,though Lie Lattices embeddings in integer and complex lattices, proving MFA I and II architectures areequivalent in complexity, in both analog and digital worlds.Keywords: Tensor Flow, Tensor Architectures, Unsupervised Learning, Emergent A.I , procedural A.I,MFA I and II architectures, neuromodulation, MCU, SoC , TOMU/WOMU, SPI bus.What:We consider inexpensive 18 by 18 matrix 64 gray levels SPI interface, based photodetector componentsof optical mice. In this paper we consider the use of the SPI interface for the use of a master slave systemof interface of an MCU to the optic processor for creating of BEAM circuitry using inexpensive MCUcircuitry, such as the TOMU/WOMU.How:MFA I and MFA II architectures are fulfilled in both digital and analog circuitry, with a networkarchitecture defined by a tensor notation, as described in a companion paper.Why:A digital fulfilment of a tensor architecture is defined and compared to Lego Mindstorm based deeplearning and procedural algorithms for semantic segmentation and classification algorithms.

Analysis, design and implementation of analog circuitry-based maximum power point tracking for photovoltaic boost DC/DC converter

Currently, research is being devoted towards the development of fast and precise maximum power point tracking (MPPT) methods for various photovoltaic (PV) applications. Due to rapidly varying solar irradiation and cell temperature, traditional MPPT algorithms are unable to track the optimum power from PV modules. In this paper, an analog circuitry-based fast and robust MPPT method utilizing a boost DC/DC converter is presented to improve the tracking capability. The mathematical model of a PV module and design expressions for converter elements are presented. To trace the desired maximum power point (MPP), a control law is derived by synthesizing the PV characteristic curves. The steady-state and transient responses of the PV-integrated boost converter are demonstrated under various conditions of source and load using the MATLAB/Simulink platform. Furthermore, a laboratory prototype is developed to validate the proposed control strategy in the real-time application. A satisfactory agreement has been exhibited among simulation and experimental results. The superiority of the proposed MPP tracker over different existing methods is investigated. Additionally, the proposed controller distributes the energy spectrum over a wider range of frequencies and simultaneously reduces the energy concentration at the clock frequency and its multiples, so that the effect of electromagnetic interference (EMI) is reduced for certain range of loads.

Implementing Time Resolved Laser Assisted Device Alteration Using Pulse on Demand Nanosecond Laser Diode

Time-resolved laser assisted device alteration (TR-LADA) has interesting applications to reduce the spatial spread of LADA site, as well as benefit device design debug. This paper describes an implementation using a 1063nm wavelength nanosecond pulse-on-demand laser diode to obtain a timing resolution of 1-2 tester cycles and spatial resolution enhancements to LADA sites. We also present potential capabilities of TR-LADA in the debug of analog circuitry.