Rampart Communications, Inc.
Resilient wireless communications system with physical layer encryption
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Updated · rampartcommunications.com
- Sector
- Defense
- Headquarters
- LINTHICUM HEIGHTS, MD
- Founded
- 2019
- Latest Form D
- $5M, May 2023
- Total capital
- $5M
- Federal grants
- None on recordNo awards found in SBIR/STTR, NIH, NSF or DoD records.
- Private capital raised
- $5M
- 1 Form D · last May 2023
- 42 months since last filing
- Federal contracts
- None on recordNo federal contract awards found.
- Granted patents
- 26
- 14 pending · first 2020
- Rank in peer group#2 of 122
Capital timeline
Latest events
- Private capital raisedForm D · SEC · 1st filing$5M
Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.
Standing among 122 peers
Line = medianDefense · System
- Granted patents#2 · top 2%
Cumulative measures favor older companies. Rankings describe position today, not outcome. Below the median, ranks show as a band rather than a number.
Founders and team
From SEC Form D filings- Alan MacdonaldExecutive OfficerNamed in SEC Form D filings
- Anthony DiekemperDirectorNamed in SEC Form D filings
- Greg FoleyDirectorNamed in SEC Form D filings
- Keith PalmisanoDirectorNamed in SEC Form D filings
- Matthew RobinsonDirectorNamed in SEC Form D filings
- Samuel BemissExecutive OfficerNamed in SEC Form D filings
What it has protected
USPTO · 26 granted of 40- New patentPower Modification of Transmitted SymbolsUSPTOUS 12,763,806
- PendingModulation-agnostic Transformations Using Unitary Braid Divisional Multiplexing (ubdm)USPTOApplication 19653652
- PendingPhysical Layer Secret Sharing Protocol Using a Unitarized ChannelUSPTOApplication 19066675
Show all 40 patent records
- Power Modification of Transmitted SymbolsOct 13, 2026 · US 12,763,806Granted
- Modulation-agnostic Transformations Using Unitary Braid Divisional Multiplexing (ubdm)Sep 3, 2026 · Application 19653652Pending
- Physical Layer Secret Sharing Protocol Using a Unitarized ChannelSep 3, 2026 · Application 19066675Pending
- Asymmetric Physical Layer Secret Sharing ProtocolSep 3, 2026 · Application 19066762Pending
- Automorphic Transformations of Signal Samples within a Transmitter or ReceiverAug 11, 2026 · US 12,706,734Granted
- Constant Envelope Modulated Unitary Braid Division MultiplexingJun 25, 2026 · Application 19539898Pending
- Modulation-agnostic Transformations Using Unitary Braid Divisional Multiplexing (ubdm)May 26, 2026 · US 12,640,907Granted
- Timing Distribution in a Variable Wireless EnvironmentMay 21, 2026 · Application 18950852Pending
- Constant Envelope Modulated Unitary Braid Division MultiplexingMar 24, 2026 · US 12,587,419Granted
- Power Modification of Transmitted SymbolsFeb 26, 2026 · Application 18809453Pending
- Methods And Apparatus For Lattice-based Signal Modulation Using A Generalization Of Polar CodesDec 25, 2025 · Application 19313162Pending
- Methods And Apparatus For Lattice-based Signal Modulation Using A Generalization Of Polar CodesDec 11, 2025 · Application 19313101Pending
- Coordinate Transforms Of Network Constellation SymbolsDec 4, 2025 · Application 19216893Pending
- Methods And Apparatus For Lattice-based Signal Modulation Using A Generalization Of Polar CodesOct 7, 2025 · US 12,438,637Granted
- Methods and Apparatus for Signal Correlation using a Quadratic FormJul 31, 2025 · Application 19182719Pending
- Methods and Apparatus for Signal Correlation using a Quadratic FormJul 31, 2025 · Application 19182835Pending
- Methods And Apparatus For Signal Correlation Using A Quadratic FormJun 10, 2025 · US 12,328,210Granted
- Methods And Apparatus For Correcting Timing And Frequency Offsets Between Communications Receivers And TransmittersMar 18, 2025 · US 12,255,764Granted
- Automorphic Transformations Of Signal Samples Within A Transmitter Or ReceiverJan 21, 2025 · US 12,206,761Granted
- Communication System And Methods Using Very Large Multiple-in Multiple-out (mimo) Antenna Systems With Extremely Large Class Of Fast Unitary TransformationsDec 31, 2024 · US 12,184,364Granted
- Automorphic Transformations of Signal Samples within a Transmitter or ReceiverDec 12, 2024 · Application 18808174Pending
- Automorphic Transformations Of Signal Samples Within A Transmitter Or ReceiverMar 19, 2024 · US 11,936,770Granted
- Communication System And Methods Using Very Large Multiple-in Multiple-out (mimo) Antenna Systems With Extremely Large Class Of Fast Unitary TransformationsDec 5, 2023 · US 11,838,078Granted
- Methods And Apparatus For Signal Modulation Using Lattice-based Signal ConstellationsSep 14, 2023 · Application 18112330Pending
- Single Input Single Output (siso) Physical Layer Key ExchangeAug 1, 2023 · US 11,716,131Granted
- Modulation-agnostic Transformations Using Unitary Braid Divisional Multiplexing (ubdm)May 2, 2023 · US 11,641,269Granted
- Communication System And Method Using Unitary Braid Divisional Multiplexing (ubdm) With Physical Layer SecurityNov 3, 2022 · Application 17845965Pending
- Single Input Single Output (siso) Physical Layer Key ExchangeOct 18, 2022 · US 11,476,912Granted
- Communication System And Method Using Unitary Braid Divisional Multiplexing (ubdm) With Physical Layer SecurityJul 19, 2022 · US 11,394,588Granted
- Communication System And Methods Using Very Large Multiple-in Multiple-out (mimo) Antenna Systems With Extremely Large Class Of Fast Unitary TransformationsMay 17, 2022 · US 11,336,341Granted
- Communication System And Method For Achieving High Data Rates Using Modified Nearly-equiangular Tight Frame (netf) MatricesFeb 22, 2022 · US 11,258,487Granted
- Single Input Single Output (siso) Physical Layer Key ExchangeOct 26, 2021 · US 11,159,220Granted
- Communication System And Method Using Layered Construction Of Arbitrary Unitary MatricesJul 27, 2021 · US 11,075,681Granted
- Systems, Methods And Apparatuses For Modulation-agnostic Unitary Braid Division Multiplexing Signal TransformationJun 29, 2021 · US 11,050,604Granted
- Communication System And Method Using Orthogonal Frequency Division Multiplexing (ofdm) With Non-linear TransformationJun 1, 2021 · US 11,025,470Granted
- Reliable Orthogonal Spreading Codes In Wireless CommunicationMay 25, 2021 · US 11,018,715Granted
- Communication System And Methods Using Very Large Multiple-in Multiple-out (mimo) Antenna Systems With Extremely Large Class Of Fast Unitary TransformationsMar 30, 2021 · US 10,965,352Granted
- Communication System And Method Using Unitary Braid Divisional Multiplexing (ubdm) With Physical Layer SecurityMar 16, 2021 · US 10,951,442Granted
- Systems, Methods And Apparatus For Secure And Efficient Wireless Communication Of Signals Using A Generalized Approach Within Unitary Braid Division MultiplexingFeb 9, 2021 · US 10,917,148Granted
- Communication System And Methods Using Multiple-in-multiple-out (mimo) Antennas Within Unitary Braid Divisional Multiplexing (ubdm)Dec 22, 2020 · US 10,873,361Granted
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Regulatory activity · Defense
- Danger Zone; Waters of Carr Creek and Whitehall Bay in the Vicinity of the Naval Support Activity AnnapolisEngineers Corps
- Federal Acquisition Regulation; Federal Acquisition Circular 2026-01; IntroductionNational Aeronautics and Space Administration
- Federal Acquisition Regulation: Trade Agreements ThresholdsNational Aeronautics and Space Administration
- Federal Acquisition Regulation; Federal Acquisition Circular 2026-01; Small Entity Compliance GuideNational Aeronautics and Space Administration
- Federal Acquisition Regulation; Federal Acquisition Circular 2025-06; Small Entity Compliance GuideNational Aeronautics and Space Administration
- Federal Acquisition Regulation; Federal Acquisition Circular 2025-06; IntroductionNational Aeronautics and Space Administration
Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.
Sources
Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.
How to read this page
Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.
Data freshness
SEC Form D filings through . SBIR and STTR awards through .