Canton, MA, United States
Canton, MA, United States

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Patent
Metamagnetics, Inc. | Date: 2015-06-12

A lumped element frequency selective limiter device and corresponding method for the design is provided, including a variety of LE-FSL device structures and systems. The devices can utilize ferrite-based materials in a lumped element inductor operable at and above 1 GHz. The methods and systems can utilize devices having cascaded configurations of lumped elements to improve operating performance the devices.


Grant
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase II | Award Amount: 498.22K | Year: 2015

During the course of this proposed Phase II program, Metamagnetics Inc. will continue the efforts toward development of a compact solid-state High Power Radio-Frequency (HPRF) source by building upon the results obtained from our Phase I effort, whereby a proof-of-feasibility demonstration of an innovative c (NLTL) for the generation of HPRF signals was achieved.This proposed system will be capable of generating arbitrary waveforms from the VHF to S-band band and delivering a minimum RF power of 10 MW at a rep-rate of 1 kHz. The development of such a system addresses the Navys requirement for a flexible and efficient high-power microwave (HPM) test capability system.In evaluating system performance, Metamagnetics Inc. will coordinate with Government and Industry partners. These synergistic activities will enable the development of a complete HPRF system with each performer contributing their unique expertise and capabilities.


Grant
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase I | Award Amount: 79.96K | Year: 2015

Increasing global RF electromagnetic (EM) activity related to commercial, scientific, and military systems, threatens the integrity of satellite communication links and has resulted in an environment cluttered with RF signals, particularly in the UHF-band. This is causing two major problems: 1) interference (due to co-site and jamming); and 2) increase in the EM noise floor. These effects can cause loss of information, reduce effective data transmission rate, and compromise system operability.Metamagnetics proposes the development of analog, low-cost, passive component solutions based on the unique non-linear properties of ferrite materials to address incoming interference threats and promote low-background-noise transmission of outgoing signals. Incoming signals will be safely received using a UHF-band frequency-selective limiter (FSL) and signal-to-noise enhancer (SNE). These combined technologies provide selective attenuation of co-site interference and jamming threats (via FSL), in addition to reducing the background EM noise floor (via SNE), while simultaneously allowing for friendly signals to pass unaffected. Outgoing signals will pass through a UHF-band SNE, before transmission, to purify the signal by attenuating unwanted spectral content.The proposed technology meets urgent Navy needs for mitigation of co-site interference and jamming threats, and addresses the rising background EM noise level, on increasingly-electromagnetically-cluttered satellite communication links.


Grant
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase I | Award Amount: 80.00K | Year: 2015

In this SBIR Phase I program, Metamagnetics will develop an advanced wideband, conformal magnetic flux-channel antenna based on novel magnetic nanomaterials. Through the design, synthesis, and fabrication of proprietary high-performance magnetic materials, Metamagnetics will enable a new generation of high-gain, wideband, and low-profile, conformal antenna solutions for HF, VHF, and UHF communications. The goal is to demonstrate the feasibility of achieving conformal, frequency independent geometries without adversely affecting the permeability and loss characteristics of traditional high-permeable magnetic materials for high-performance magnetic flux-channel antennas.


Grant
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase I | Award Amount: 80.00K | Year: 2015

Metamagnetics Inc. proposes to address the Navy?s need for new advanced materials and low-cost manufacturing methods in Electronic Warfare systems by developing new composite magnetic fibers weaved in high-performance ferrimagnetic-based textiles. These engineered magnetic fabrics can be used as substrates, super-strates, and protective coatings in several applications, including high performance radome structures for future advanced antenna systems. The proposed low-cost, low-loss, free-space impedance-matched magnetics fibers can be implemented in present additive manufacturing processes used by industry, as well as emerging advanced methods to enhance future antenna capabilities. Ferrimagnetic textiles can be tunable, spatially distributed, and made conformal to complex shapes for use in next generation electronic systems across many naval applications that require structural resiliency and high electromagnetics performance.


Grant
Agency: National Aeronautics and Space Administration | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 895.15K | Year: 2014

Ferrite control components including circulators and isolators are fundamental building blocks of Transmit/Receive modules (TRM) utilized in high data rate active space transceivers and transponders for both long-range (LR) and low earth orbit (LEO) systems. These components are utilized to protect high power amplifiers (HPA) during the transmit cycle from destabilizing, and potentially harmful, power reflections from the antenna element. During receive cycle these components are utilized to direct lower power received signals with minimal attenuation to the low noise amplifiers (LNA). As such, performance specifications of these ferrite control components, such as bandwidth, insertion loss, isolation, power handling, temperature stability, radiation hardness, and linearity impose strict limitations on the overall system performance. Over the course of the proposed Ph1 SBIR program self-biased ferrite control components based on highly textured hexagonal ferrite compacts which have the potential to eliminate biasing magnets and significantly reduce the size, cost, and weight of the TRM while concurrently increasing power handling capability, and improving temperature stability and radiation hardness will be investigated. Specifically, a research and development path to realizing high performance self-biased ferrite materials and device designs for operation in space based environments at Ka-band (>27 GHz, 31.5 - 34 GHz targeted) is outlined.


Grant
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase I | Award Amount: 79.47K | Year: 2014

Monolithic Microwave Integrated Circuits realized on GaAs, GaN, InP, SiGe, and to a lesser extent Si are integral components of many deployed NAVY detect, control, and engagement systems due to their broad bandwidth, fast-response time, and small size (10 W).


Grant
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase I | Award Amount: 79.38K | Year: 2014

Metamagnetics proposes the research and development of a compact, reliable, cost-effective and reconfigurable pulsed-voltage source based on drift step recovery diodes (DSRD) for high-power microwave generation applications. The output parameters of the pulsed-voltage source determine the efficiency and agility in the use of electromagnetic spectrum and influence, among other factors, the operating frequency, bandwidth, and frequency dispersion of the HPM output of the system. The specific technology used to implement the pulsed-voltage source further affects the overall system size and weight. It is clear that in order to realize compact HPM systems that deliver a favorable combination of performance, size, weight, and power, the fundamental challenge of generating high-voltage pulses to drive these systems has to be addressed. Described herein, is a research and development program aimed at addressing the specific challenges of excitation of HPM sources through a combination theoretical and experimental effort aimed at advancing the state-of-the-art in Navy"s HPM capabilities.


Grant
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase I | Award Amount: 149.65K | Year: 2014

US Navy relies on directed energy (DE) weapons, such as High-Power Microwave (HPM) sources, to disrupt, damage, or destroy foe electronic equipment at a standoff distance while minimizing collateral damage. Friendly and blue force mission critical electronic systems, such as radar, communications, navigation, sensors, guidance, fire control, etc. are vulnerable to both friendly and enemy DE weapons. US Navy requires test capability to generate arbitrary HPM signals in order to both improve the effectiveness of its DE weapons against specific enemy targets and to reduce the susceptibility of friendly systems to foe DE attacks. We propose to address the Navy requirement for a flexible and efficient HPM test capability by leveraging our prior Navy-funded work and innovative concepts to develop a solid-state High-Power Radio-Frequency (HPRF) source based on a planar and modular Non-linear Transmission Line (NLTL) RF oscillator triggered through a ultra-fast stacked MOSFET high-voltage switch. The wavelet synthesis approach will be utilized to generate essentially arbitrarily shaped waveforms by adjusting relative delays and amplitudes among array elements.


Grant
Agency: National Aeronautics and Space Administration | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 123.09K | Year: 2013

Ferrite control components including circulators and isolators are fundamental building blocks of Transmit/Receive modules (TRM) utilized in high data rate active space transceivers and transponders for both long-range (LR) and low earth orbit (LEO) systems. These components are utilized to protect high power amplifiers (HPA) during the transmit cycle from destabilizing, and potentially harmful, power reflections from the antenna element. During receive cycle these components are utilized to direct lower power received signals with minimal attenuation to the low noise amplifiers (LNA). As such, performance specifications of these ferrite control components, such as bandwidth, insertion loss, isolation, power handling, temperature stability, radiation hardness, and linearity impose strict limitations on the overall system performance.Over the course of the proposed Ph1 SBIR program self-biased ferrite control components based on highly textured hexagonal ferrite compacts which have the potential to eliminate biasing magnets and significantly reduce the size, cost, and weight of the TRM while concurrently increasing power handling capability, and improving temperature stability and radiation hardness will be investigated. Specifically, a research and development path to realizing high performance self-biased ferrite materials and device designs for operation in space based environments at Ka-band (>27 GHz, 31.5 - 34 GHz targeted) is outlined.

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