Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase I | Award Amount: 149.97K | Year: 2015
ABSTRACT:Global Positioning System (GPS) capabilities have become common place technology with commercial and DoD applications with several countries developing their own standard Global Navigation Satellite Systems (GNSS). To provide service to multiple satellite bands, a reconfigurable radio front-end that can support all possible GNSS/communication bands with simultaneous reception is needed. MaXentric proposes a Universal GNSS Receiver capable of tuning to multiple GNSS/Comm bands with a custom reconfigurable receiver to address this demand.BENEFIT:GPS has become a standard service for both DoD applications and commercial technology such as cellular. Current GPS technology is only capable of servicing a few bands with receivers with minimal reconfigurable capabilities. MaXentric's Universal GNSS Receiver will address this issue by creating a multi-service, adaptable GNSS receiver. The anticipated benefit and marketing potential is improved reliability, accuracy, and acquisition time over current GNSS receivers leading to potential commercial market value.
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase II | Award Amount: 749.91K | Year: 2014
ABSTRACT: The vulnerability of satellite assets to enemy jamming has led to an increased urgency to develop SATCOM payloads capable of maintaining high aggregate throughput even in challenged environments. As the size, cost, and power consumption of digital signal processing platforms continue to drop and their performance improves, incorporating digital beamformer (DBF) designs into future SATCOM satellite payloads has become an increasingly attractive solution to this challenge. The flexibility of digital beamforming permits the creation of multiple independent antenna patterns that can be designed for wideband systems. In response to the Air Force solicitation, MaXentric is developing an adaptive digital beamforming system codenamed SABER (Satellite Adaptive Beamforming aRray). MaXentrics Phase I focused on simulating critical adaptive beamforming algorithms while reviewing the system trade space. The proposed Phase II effort will focus on constructing a hardware test platform for algorithm implementation and testing. BENEFIT: SABER Phase 2 HW prototype provides a fully functional HW implementation of the SABER architecture envisioned in Phase 1. It will enable MaXentric to implement the various flexible, power efficient algorithms for beam-forming and channel equalization developed and analyzed in Phase 1. MaXentric Phase 2 approach emphasizes the need for commercializing the SABER platform by building a Phase II prototype that has enough flexibility and functionality to be utilized in many other government and private sector applications such as phased array radars and sensing, MIMO transceivers targeted for SIGINT or wireless/cellular communications and general purpose DSP boards used for complex and demanding wide-band signal processing tasks.
Agency: Department of Defense | Branch: Army | Program: SBIR | Phase: Phase II | Award Amount: 999.92K | Year: 2014
The Ka-/Q-band satellite systems offer potential for transportable and mobile communications through the effective use of the wide bandwidths available while requiring that adequate linearity performance be maintained. In environments where size and power conservation is of high importance, power consumption and heat dissipation in the power amplifier (PA) must be minimized. However, it is widely accepted that linearity and efficiency are competing constraints. To address these challenges, MaXentric Technologies proposes a cost-effective linearizer, ALASTx (Adaptive LineArizer for Satellite Transmitters), for high efficiency satellite transmitters, capable of better than -50 dBc ACPR and <2.5?/dB AM-PM using multi-tone signals with modulation bandwidths up to 52 MHz while operating the PA at peak efficiency (0dB backoff) to achieve high linearity while simultaneously maintaining high efficiency on Ka-/Q-band PAs (30-31 GHz and 43.5-45.5 GHz). ALASTx offers exceptional linearization capabilities for wide-band systems and, as compared to other schemes, has become very cost-efficient by utilizing a small set of additional resources in an already-existing signal processing unit used for signal generation. One of the major advantages of using ALASTx is that this solution is independent of technology, power amplifier classes, power levels, and environment.
Agency: Department of Defense | Branch: Defense Advanced Research Projects Agency | Program: SBIR | Phase: Phase I | Award Amount: 149.91K | Year: 2015
Maxentric is proposing a solution for switched power supplies based on a high efficiency fully integrated approach, which can significantly reduce size and cost on a wide range of electronic systems. The solution will: (1) optimize the control circuitry a
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase II | Award Amount: 749.09K | Year: 2015
ABSTRACT:To meet the demands of the A141-125 SBIR solicitation, the MaXentric team proposes the MAST (MaXentrics Adaptive Supply Tracking), which uses envelope tracking technology to enhance efficiency of a radiation hardening Gallium Nitride (GaN) solid-state power amplifier (SSPA) for the global positioning system (GPS) block-III L1-band satellite applications. Based on Phase I efforts, it was concluded that the DC power consumption of the MAST SSPA is almost half compared with the conventional SSPA with a constant envelope multiplexing technique (i.e. 5-code CASM: coherent adaptive subcarrier modulation), and the average power added efficiency (PAE) of the MAST SSPA is 1.3 times higher than that of the digital pre-distortion (DPD) SSPA for 5.4 dB peak-to-average power ratio (PAPR) GPS signal.BENEFIT:Power amplifiers are an integral part of all satellite communications, cellular phones, base stations, and radio systems. They represent one of the most expensive component sub-assemblies in modern wireless infrastructure equipment: their cost, physical size, and performance in terms of linearity, efficiency, and output power are all important drivers in system design. As transmitted waveforms become more complex (with higher peak-to-average ratios and higher signal bandwidths), new and innovative techniques and technologies will be needed to meet the challenges associated with these waveforms. The MAST solution is well suited for providing the necessary technology to meet these requirements by adaptively tracking the supply, which ensures the amplifier is running optimally, reducing the size of the power supply.
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase II | Award Amount: 749.93K | Year: 2015
ABSTRACT: To meet the demands of the A141-245 SBIR solicitation, the MaXentric ) team proposes the GAM (Green Amp Multiplexer), which uses compact microwave circuit design and digital distortion compensation algorithm to expand bandwidths and reduce insertion losses of a multipaction-free multiplexer system for the global positioning system (GPS) block-III satellite. As a result of Phase I efforts, MaXentric proposed a concept of a compact multiplexer system consisting of planar multiplexer and multiple-band power amplifiers (PAs), which are integrated into one module. An additional concept was proposed to compensate for the imperfection of the multiplexer system, such as filter roll-off and PA non-linearity, through the use of digital signal processing (DSP) techniques. These innovative concepts enable the GPS multiplexer system to extend the bandwidths (up to 45 MHz) without sacrificing insertion losses (
Agency: Department of Defense | Branch: Army | Program: SBIR | Phase: Phase II | Award Amount: 1.49M | Year: 2015
In response to the A13-004 Remote Triage of Combat Casualties solicitation, MaXentric proposes the VitalWave system. The VitalWave system uses Doppler radar and radar imaging to assess the vital signs individuals. The use of Doppler radar allows for a system that can measure vital signs with no direct contact required. This allows first responders the ability to assess the vital signs of multiple injured soldiers from a safe distance in compromised environments. Furthermore, this technique is completely standalone and does not require victims to wear remote sensors. Another advantage of the VitalWave system is the ability to measure vital signs through walls and debris. Unlike alternative systems, which require line of sight, UWB MicroDoppler radar can identify and assess victims behind walls and rubble. The VitalWave system is light weight and power efficient allowing it to operate on a single battery charge for extended periods of time. The possibility of including further vital sign detection within the VitalWave system will also be considered. These include but are not limited to movements, location, body temperature and blood volume.
Agency: Department of Defense | Branch: Army | Program: SBIR | Phase: Phase II | Award Amount: 989.78K | Year: 2015
MaXentric is proposing a novel C2 network solution capable of interconnecting wireless devices simultaneously over different wireless technologies (military and/or commercial) either operating in peer-to-peer mode or using a wireless infrastructure. Our s
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase I | Award Amount: 150.00K | Year: 2015
ABSTRACT:The Ka-band SATCOM systems offer potential for transportable and mobile communications through the effective use of the wide bandwidths available while requiring that adequate linearity performance be maintained. In environments where size and power conservation is of high importance, power consumption and heat dissipation in the power amplifier (PA) must be minimized. However, it is widely accepted that linearity and efficiency are competing constraints. To address these challenges, MaXentric Technologies proposes a cost-effective envelope tracking Ka-band power amplifier, GETSAT (GreenAmp Envelope Tracking for SATCOM), for high efficiency satellite transmitters, capable of greater than 70W of output power over 29-31 GHz with greater than 35% efficiency. The technology supports QPSK and QAM signals, as well as others. To achieve high linearity while simultaneously maintaining high efficiency, GreenAmp envelope tracking with MaXPAL (MaXentrics PA Linearizer) will be used. Cost, size, weight, and power are of prime importance for these mobile SATCOM ground terminals. Our strategy throughout the program will improve our project prototypes on other performance parameters such as output power, operating voltage, output power, power-added-efficiency (PAE) and the response speed of the control circuitry with wideband operation. The success of our approach will depend on successful developments in wideband modulators and process integration with GaN MMICs.BENEFIT:MaXentrics proposed techniques for developing high efficiency Ka-band power amplifier with high linearity directly addresses design constraints with GreenAmps envelope tracking technology in conjunction MaXPALs real-time digital pre-distortion, a key-enabler technology. The U.S. government is interested in commercial satellite services for a variety of applications, including emergency response, remote locations, video broadcast, distance learning, and continuity of operations. The Ka-band satellite systems offer potential for transportable and mobile communications due to the wide bandwidths available and the high gain achievable with small antennas. GETSAT (GreenAmp Envelope Tracking for SATCOM) has the potential for improving the communication link performance, power, and spectrum efficiency of Wideband Global SATCOM (WGS), Warfighter Information Network-Tactical (WIN-T), and Defense Communications and Army Transmission (DCAT). Additionally, this technology can be leveraged by portable manpacks and radios carried by the warfighters so as to prolong battery usage and eliminate existing cooling systems by achieving high efficiency and linearity simultaneously. Commercial applications that benefit for these capabilities provided by GETSAT include cellular phone usage, direct-to-home television service, Internet (satellite systems can deliver pictures and video 200 times faster than a typical modem and telephone line), video conferencing, private data networks, telemedicine, content distribution, interactive games, and more.
Agency: Department of Defense | Branch: Air Force | Program: STTR | Phase: Phase I | Award Amount: 149.95K | Year: 2015
ABSTRACT: In this proposal, the MaXentric team outlines its strategy for creating a Radar-based Compressive Sensing and Target Classification system, code-named Rad-CSC. ?In this Phase I, the team will implement and optimize compressive sensing and classification algorithms for use with conventional and synthetic aperture radar data. ?Data will be chosen from publicly available datasets, such as the MSTAR X-band SAR imagery from AFRLs Sensor Data Management System (SDMS). ?These data will be analyzed and pre-processed, with ground truths generated where necessary in order to identify targets (such as vehicles) and clutter (such as foliage). ?Compressive sampling methods will be applied in Matlab to simulate the compressive sensing process, with such algorithms being refined in order to optimally emphasize the features of the targets. ?Compressive classification techniques will then be implemented to detect and identify multiple categories of targets from the reduced-dimensionality data. ?These methods will then be extended to an existing platform by Dr. Fathy, providing a design for Phase II hardware which will implement compressive sensing & classification methods on radar imaging data. ?This design will be presented in a Phase II proposal, and the results from the Phase I study will be presented in a final demonstration.; BENEFIT: MaXentric plans to extend Rad-CSC, and its derivatives, to both military and private commercial markets. Primary military applications are the focus of this greater proposal; diverse secondary applications have been identified for examination during the course of SBIR research, including DARPA ISR (Intelligence, Surveillance, and Reconnaissance) & TRACE (Target Recognition and Adaptation in Contested Environments), lightweight target detection, warfighter awareness/targeting in contested environments, and rapid reconnaissance. ??Additional applications in the non-consumer private sector include fire/rescue C3, man-portable sensors emergency personnel, and low-energy surveillance (passive & active). ?MaXentric will also seek to explore any other identified commercialization and secondary applications of the technology developed under this STTR contract.