What 3H Communication Systems Inc does

3H Communication Systems Inc is a privately held US-based designer and manufacturer of RF filters, duplexers, multiplexers, diplexers, combiners, and integrated front-end systems covering the DC to 50 GHz frequency range. The company operates from an AS9100- and ISO 9001:2015-certified facility in Irvine, California, and works under US government security clearances with Tier 1 and Tier 2 defense contractors on applications including radar, electronic warfare, missiles, UAVs, and military communications, while also serving commercial telecom carriers and infrastructure providers with low-PIM, high-power products for 2G through 5G networks.

The company sells its products through a direct B2B sales motion with quote-based pricing and a supplier portal for existing accounts, rather than through public list pricing or distribution channels. Its product portfolio is organized around sub-brands including Pico Series (miniature SMT filters up to 19 GHz), Nano Series, and Micro Series form factors, plus specialized offerings such as LTE Band 13/30/71 duplexers, C-Band cavity filters, GPS notch filters, and the 2021-introduced 3H Printed Filters line. Differentiators cited include proprietary electrical performance modeling software that compresses prototype cycles, custom housing engineering, a 5-year warranty on all passive products, and tape-and-reel availability for automated assembly.

The company serves six target verticals — Defense and Telecom as primary, with Fire & Safety, Automotive, Air & Space, and Medical as secondary — but its geographic footprint is domestic-only and its revenue, ownership structure, customer-specific revenue split, and headcount trajectory are not disclosed in available materials. No external funding rounds, M&A, partnerships, or leadership changes have been announced, and the firm appears to be operating as an independent, bootstrapped specialty component supplier.

Name

3H Communication Systems Inc

Legal name

3H Communication Systems Inc

Website

https://3hcommunicationsystems.com

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

11–50 employees

Short description

3H Communication Systems Inc is a US-based, AS9100/ISO 9001:2015-certified manufacturer of RF filters, duplexers, multiplexers, and front-end systems covering DC to 50 GHz for US defense contractors and commercial telecom customers.

Ownership category

akta.pro rank

Headquarters

HQ city

Causeway Bay

HQ country

Hong Kong SAR China

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. RF Filter Products: Manufactures and sells RF filters, microwave components, and front-end systems. Products include bandpass, lowpass, highpass, band reject filters, duplexers, multiplexers, and combiners. Offered in various packages (containerized, Pins, SMT, Leadless) and available on tape & reel for automated assembly. Revenue from product sales to defense contractors and commercial telecom customers.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels2 records

Core offering

3H Communication Systems designs, manufactures, and sells RF and microwave components — including RF filters (bandpass, lowpass, highpass, band reject), duplexers, multiplexers/diplexers, combiners, and integrated front-end systems — covering the DC to 50 GHz frequency range. Products are offered in containerized, Pins, SMT, and Leadless packages with tape & reel availability, and are sold to Tier 1 and Tier 2 US defense contractors as well as commercial telecom carriers and infrastructure providers. The company combines catalog/stock products with custom-engineered solutions using advanced electrical performance modeling software.

Product overview

3H Communication Systems is a specialized RF and microwave components company offering a comprehensive portfolio of wireless infrastructure products. The core product line consists of RF filters (bandpass, lowpass, highpass, band reject), duplexers, multiplexers/diplexers, and combiners that cover DC to 50 GHz frequency range. The product portfolio includes specialized sub-brands: Pico Series (miniature SMT filters up to 19 GHz), Nano Series (nano-sized compact filters), and Micro Series (micro-sized harsh environment filters). The company also produces specialized products for specific applications including LTE Band 13/30/71 duplexers, C-Band cavity filters, L-Band ruggedized filters, GPS notch filters, and WiFi diplexers. All products are designed for both military/defense and commercial telecom markets, with various package options including containerized, Pins, SMT, Leadless, and tape & reel. The company offers custom filter design capabilities and all passive products are backed by a 5-year warranty.

Differentiator

Problem solved

Functional benefit

Products and services

• RF Filters (Bandpass, Lowpass, Highpass, Band Reject) Comprehensive line of RF filters covering DC to 50 GHz in bandpass, lowpass, highpass, and band reject configurations for defense and commercial telecom applications.
• Duplexers RF duplexers for separating transmit and receive signals, available across LTE, cellular, and public safety frequency bands.
• Multiplexers / Diplexers RF multiplexers and diplexers for combining or separating multiple frequency bands in communication systems, including LTE 700 MHz multiplexers and high power WiFi diplexers.
• RF Combiners RF combiners for combining multiple signal paths in wireless infrastructure, including PCS, AWS, WCS, and WiFi band combiners with low insertion loss and sharp selectivity.
• RF Front-End Systems Integrated RF front-end systems combining filters, duplexers, and other components into complete signal conditioning solutions for defense and telecom customers.
• Pico Series Filters Miniature SMT filters available up to 19.0 GHz, sized 0.65" x 0.25" x 0.06", designed for harsh military and commercial environments and available with or without RoHS certification.
• Nano Series Filters Nano-sized RF filters designed for compact applications including L-Band bandpass filters, suitable for harsh military and commercial environments.
• Micro Series Filters Micro-sized RF filters for applications requiring compact form factors while maintaining high performance in harsh military and commercial environments.
• 3H Printed Filters RF filters manufactured using printed circuit technology, field-proven for military, space, and commercial applications, available in bandpass, lowpass, highpass, band reject, and multiplexer configurations in the smallest packages.
• LTE Band 71 600 MHz Duplexer Low PIM LTE Band 71 600 MHz duplexer with >100 dB selectivity, <1.0 dB insertion loss, rated for 200 W average power and PIM of >160 dBc, for 4G/5G cellular base station and infrastructure use.
• LTE Band 13 Duplexer High power, low PIM LTE Band 13 duplexer with >85 dB rejection, <1.0 dB passband insertion loss, rated for 50 W cw and 500 W peak power for cellular infrastructure.
• LTE Band 7 High Power 2600 MHz Duplexer LTE Band 7 high power 2600 MHz duplexer for 4G/LTE communication infrastructure and base station applications.
• LTE Band 30 Duplexer Duplexer specifically designed for LTE Band 30 spectrum allocations in cellular infrastructure.
• LTE 700 MHz Multiplexer Assembly Multiplexer assembly designed for LTE 700 MHz spectrum, enabling multiple band support in a single unit for cellular infrastructure.
• Ultra Wide Band Cavity L-Band Filter Ultra wide cavity bandpass filter for L-Band with >70 dB selectivity, <0.50 dB insertion loss, rated for 100 W average power for high-performance defense and commercial applications.
• C-Band Cavity Bandpass Filter C-Band Combline Cavity Bandpass Filter with 13 sections and 4 zeros for extremely sharp roll-offs while maintaining low passband insertion loss, for military and commercial applications.
• Ruggedized L-Band Filter Miniature, ruggedized, SMT L-Band bandpass filter designed to meet Mil-Std-202 or Mil-883 environmental requirements for military and commercial applications.
• GPS Notch Filter High performance GPS notch filter offering >40 dB rejection from 1565 to 1585 MHz while maintaining <2.5 dB insertion loss in passbands for military and commercial applications.
• PCS / AWS / WCS / WiFi Combiner Multi-band combiner supporting PCS, AWS, WCS, and WiFi bands with low insertion loss and sharp selectivity, available from stock.
• 2.0 to 18.0 GHz Highpass Filters Highpass filters covering the 2.0 to 18.0 GHz frequency range, available from stock for military and commercial microwave applications.

Quantifiable outcome

• High selectivity >100 dB while maintaining <1.0 insertion loss in passbands
• +2 more outcomes

Named customers2 records

Segments6 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Mini-Circuits: A leading global manufacturer of RF, microwave and millimeter-wave components, including an extensive catalog of filters, duplexers and combiners serving defense, telecom and instrumentation markets directly comparable to 3H's catalog model.
• RLC Electronics: Niche US manufacturer of RF switches, filters, multiplexers and sub-assemblies serving defense, aerospace and instrumentation markets—directly comparable to 3H in scope and customer base.
• Reactel: US-based niche manufacturer of RF and microwave filters, multiplexers and switched filter banks serving defense, aerospace and telecom customers—a close comparable to 3H's small-shop, high-mix defense filter model.
• Johanson Technology: US-based manufacturer of ceramic-chip filters, duplexers and baluns for wireless, military and aerospace applications—competes head-on with 3H's miniature ceramic and LTE/5G filter products.
• Anatech Electronics: US-based specialty manufacturer of RF and microwave filters, duplexers, multiplexers and combiners for military and commercial wireless markets—direct rival to 3H in defense and telecom filter sales.
• K&L Microwave (a Smiths Interconnect brand): Manufacturer of RF and microwave filters, multiplexers and integrated sub-assemblies for military, aerospace and commercial wireless—comparable to 3H in product scope and defense focus.

Broad incumbents

• Qorvo: Diversified RF semiconductor and component supplier offering RF filters, duplexers and front-end modules for wireless infrastructure and defense applications—an incumbent overlap with 3H's defense and telecom filter lines, but at much greater scale.
• Skyworks Solutions: Major RF semiconductor and module maker covering filters, duplexers and front-end solutions for mobile, IoT and infrastructure; broader commercial focus than 3H but competes for the same carrier and defense filter sockets.
• Murata Manufacturing: Large Japanese electronic-components manufacturer producing RF filters, duplexers and ceramic-based filter components used in mobile and wireless infrastructure—overlaps with 3H's filter/duplexer business and especially its LTE/5G product lines.
• TDK (RF Solutions / EPCOS): Global electronic components giant with an extensive portfolio of RF filters (SAW, BAW, ceramic) and duplexers for mobile, infrastructure and industrial markets—an incumbent supplier across many of 3H's served segments.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about 3H Communication Systems Inc