Aeronautical VHF/UHF Patents: Who Leads, Where the Gaps Are 2026
- 22 families total. This is a narrow field by patent volume — filing activity peaked at 10 families in 2021 and dropped to zero by the 2022 midpoint, a decline rather than a lull.
- G08G dominates the IPC mix. 17 of the matched records sit in traffic-control classifications versus 13 in general transmission — the claim activity is airspace-management-led, not radio-hardware-led.
- Filing offices skew European. EPO receives 9 of the filings and the US 6, with single-digit activity everywhere else, including China, Germany and Japan at one apiece.
Filing growth compares 2021 (10 records) with 2024 (1) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 22 records in scope (CR5), not by the ranked leaders only.
A compact patent corpus tracking VHF/UHF air-ground communication
Aeronautical VHF/UHF communication systems cover the radio links, frequency management and ground-station infrastructure that keep aircraft in contact with air traffic control and with each other. The 22-family dataset behind this page pulls records that combine air traffic control communication, aeronautical radio or VHF communication system language with claim elements around frequency allocation, squelch, ground stations, datalink or interference, filtered to IPC classes H04B7, G08G5 and H04W4.
The technology composition leans heavily toward traffic-control classifications rather than pure radio-transmission engineering, which suggests the patenting activity in this space is driven more by how communication links are integrated into flight operations than by advances in the RF hardware itself. Publication lags filing by roughly 18 months, so the flat-to-declining trend through the most recent years is likely understated rather than a firm signal of the field going quiet.
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Filing trend and technology composition
Twenty-two patent families were matched across the coverage window, with activity concentrated in a single peak year and a technology mix weighted toward traffic-control and general transmission classes.
A single peak, then a drop to nothing
Filings were at zero in 2017, rose to a peak of 10 families in 2021, then fell back to zero by the 2022 midpoint and stayed there through the most recent partial year. That pattern reads as a short, concentrated filing wave rather than sustained investment — though the newest years are always undercounted given publication lag.
Traffic control outweighs pure radio classifications
G08G (traffic control systems) accounts for 17 of the matched records and H04B (general transmission) for 13, with G01C, G01S, G10L, H04W, B64D and G06Q each appearing in low single digits. The overlap between G08G and H04B in most records indicates that claims are typically drafted around the communication link as it serves an operational traffic-control function, not as a standalone radio system.
Shares are the percentage of the 22 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Aeronautical VHF/UHF Communication Systems with Eureka
This page is one run against one query. Ask Eureka your own question about aeronautical vhf/uhf communication systems and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in this corpus
Coexistence of cellular networks with aeronautical radio altimeters
Systems, methods, apparatuses, and computer program products for coexisting cellular networks with aeronautical radio altimeters. The method may include receiving a first command from a network manager to reduce emissions, then reducing the emissions based on that command. In certain example embodiments, the first command may target one or more network nodes in a cluster including the network node.Filed by Nokia Technologies, published 2022-09-15 — one of the more recent high-citation records in the set.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | JP1998135898A | Vhf communication system | 7 |
| 2 | EP2372670A1 | Aircraft communications radio tuning aid method | 6 |
| 3 | US20220294504A1 | Coexistence of cellular networks with aeronautical radio altimeters | 5 |
| 4 | US20250037588A1 | Air traffic control communication to taxi path planning | 1 |
| 5 | US20210272465A1 | Directing and communicating data to a flight management system | 1 |
Citation counts reflect influence within the searched corpus and favour older filings; they are not a measure of current commercial relevance.
Publication numbers are shown where the record carries one (5 of 5 rows); clicking a row searches Eureka by that number.
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Browse MCP servers →What the citation and filing pattern implies
The most-cited records span three decades of drafting styles, from a 1998 VHF communication system filing to a 2022 spectrum-coexistence filing, which points to a field where foundational radio-link patents still get cited even as newer filings shift toward spectrum-sharing and cockpit-integration concerns.
A short filing wave, not sustained growth
Activity built to a peak of 10 families in 2021 and then fell to zero by 2022, which is a steeper drop than typical publication-lag effects would explain on their own.
Traffic-control framing dominates
More records sit in traffic-control classifications than in general transmission, indicating claims are usually built around how a communication link functions inside air traffic management rather than around radio hardware alone.
Filing activity concentrates in Europe and the US
The EPO and USPTO account for the bulk of receiving-office activity, with China, Germany and Japan each contributing a single filing — a narrow geographic footprint for a global aviation topic.
Older filings still anchor the citation graph
The highest-cited record dates to 1998, well ahead of the field's 2021 filing peak, which is typical of citation counts inside a fixed corpus — they reward age, not current relevance.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to aeronautical vhf/uhf communication systems, with the prior art for and against each one.
A short assignee list with no recent-year movement
The assignee set spans established aerospace and communications suppliers alongside at least one newer regional entrant, but none of the tracked assignees show any filings in the latest year — consistent with the corpus-wide drop to zero after 2021.
Established aerospace suppliers hold legacy positions
Assignees with aviation-systems heritage appear in the ranking but show no filings in the most recent tracked year, matching the broader flat-to-zero trend across the dataset.
Telecom-side assignees target spectrum coexistence
At least one telecom-heritage assignee is present with a filing focused on cellular-aeronautical spectrum coexistence, reflecting the datalink and interference language built into the search criteria.
A single Chinese-origin entrant sits alongside global players
One China-based communications technology company appears in the assignee list, filing into a corpus otherwise dominated by European and US receiving offices.
| Assignee | Recent year | YoY |
|---|---|---|
| GE Aviation Systems LLC | 0 | — |
| Honeywell International Inc. | 0 | — |
| Nokia Technologies Oy | 0 | — |
| Rosemount Aerospace Inc. | 0 | — |
| NEC Corporation | 0 | — |
| Chengdu Xingji Yuanhang Communication Technology Co., Ltd. | 0 | — |
| AKTSIONERNOE OBSHCHESTVO NAUCHNO PROIZVODSTVENNOE PREDPRIYATIE POLET | 0 | — |
Where to take this analysis
The filing pattern here raises questions that a static landscape view cannot answer on its own — particularly around why activity dropped after 2021 and whether the under-claimed branches are open by neglect or by difficulty.
Map claim scope against the under-claimed branches
Run a claim-by-claim comparison against the flagged sub-areas, such as datalink handover and radio-altimeter interference mitigation, to see whether the thin filing density reflects real white space or simply narrow search terms.
Explore in EurekaTrack whether the post-2021 drop is a lag artefact or a real pullback
Cross-check the flat 2022-2026 filings against publication-lag timing before concluding assignees have exited the field.
Explore in EurekaWatch the telecom-aerospace overlap on spectrum coexistence
The cellular-altimeter coexistence filing suggests a cross-industry pressure point worth monitoring as 5G deployment expands near aviation bands.
Explore in EurekaCommon questions on aeronautical VHF/UHF communication patents
The dataset shows a peak of 10 families in 2021 followed by zero filings recorded by the 2022 midpoint and through the most recent partial year. Part of this is a publication-lag artefact, since patent filings typically take around 18 months to become publicly visible, so 2025-2026 numbers are understated by default. But a drop this steep, following directly after a peak, is larger than lag alone would usually produce, which suggests assignees genuinely slowed filing in this specific claim space rather than simply having their newest filings hidden from view.
The assignee list includes established aerospace and avionics suppliers, a major telecom equipment company with a spectrum-coexistence filing, and at least one newer China-based communications technology entrant. None of the tracked assignees show filings in the most recent year, which is consistent with the corpus-wide decline rather than any single company exiting the field. Readers should treat the ranking as a snapshot of historical filing activity rather than current R&D investment, since recent-year momentum is flat across the board.
The search terms and IPC classes used to build this dataset (H04B7, G08G5, H04W4, combined with frequency allocation and squelch language) do not separately break out VHF versus UHF claim volume, so no reliable split can be reported from this evidence. What is clear is that VHF-specific language appears in the oldest and most-cited record in the set, a 1998 filing titled simply 'Vhf communication system', while newer filings tend to describe frequency and interference issues more generically. Anyone needing a VHF/UHF split should run a follow-up query that isolates those frequency-band terms explicitly.
Yes — one of the most-cited records in the corpus, US20220294504A1 from Nokia Technologies, directly addresses coexistence between cellular networks and aeronautical radio altimeters, describing methods for reducing network emissions on command from a network manager. This filing sits among the higher-citation records despite being more recent than the corpus's filing peak, which signals active industry attention to the spectrum-coexistence problem. It is a useful anchor point for anyone tracking how 5G rollout near aviation bands is being addressed in the patent record.
Filing density is thin in several adjacent branches relative to the dominant G08G traffic-control and H04B transmission classes, including squelch algorithm tuning specific to VHF voice channels, datalink handover procedures between ground stations, and taxi-path communication integration. These branches sit within the search scope but show only isolated records, such as the single-citation filing on air traffic control communication to taxi path planning. Whether this reflects genuine technical white space or simply narrower search coverage in this dataset is worth checking with a broader claim-language query before committing R&D or filing strategy to those areas.
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.