What Sierra Microwave Technology does

Sierra Microwave Technology L.L.C. is a privately held designer and manufacturer of passive microwave components and integrated assemblies headquartered in a 20,000 square foot purpose-built facility in Georgetown, Texas. Founded in 1985 in Sacramento, California, the company relocated to Texas in 1992 and divested its amplifier business to concentrate on its core passive portfolio: circulators, isolators, PIN-diode and latching ferrite switches, filters, waveguide components, equalizers, power dividers, couplers, multiplexers, bias tees, and terminations operating across 0.225 GHz to 65 GHz. The product line spans catalog narrowband components to fully customized integrated assemblies, with particular depth in space-qualified and high-power designs (radiation-hardened to 1 MegaRad, multipactor/corona-tested in five thermal vacuum chambers, and verified on 17 VNA/PNA test stations and high-power TWT amplifiers to 5kW peak).

The company has operated as a subsidiary of HEICO Corporation since December 2003, sitting within HEICO's Electronic Technologies Group alongside ten other facilities that collectively employ over 60 engineers and approximately 620 team members. Sierra is AS9100 and ISO 9001 certified and serves satellite communications, radar, electronic warfare, missiles, electro-optical targeting, TT&C, and ELINT/ECM applications for space, military, scientific, and commercial customers. The business model is hardware sales conducted through a global network of qualified representatives covering all U.S. states and 16+ international markets, with pricing established via a Request-for-Quote process for custom and catalog product — consistent with the consultative, design-in sales motion typical of hi-rel aerospace and defense component suppliers.

Name

Sierra Microwave Technology

Legal name

Sierra Microwave Technology L.L.C.

Website

https://sierramicrowave.com

Company type

Private

Founded year

1985

Operating status

Operating

Headcount range

51–100 employees

Short description

Sierra Microwave Technology designs and manufactures passive microwave components and integrated assemblies — including circulators, isolators, switches, filters, and waveguides from 0.225 GHz to 65 GHz — for space, military, and commercial customers. The company is a subsidiary of HEICO Corporation.

Ownership category

akta.pro rank

Product category

Passive Microwave Components and Integrated Assemblies

NAICS

Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing (334220), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451)

SIC

Electronic Components, Nec (3679), Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Military Power Supplies, RF/Microwave Components & Ruggedized Electronics (IMABAGAJ)

akta.pro secondary industries

Passive Filters & RF Passives (LC Filters/Diplexers/Baluns/Attenuators) (HDAHANAG), RF & Microwave Connectors and Coaxial Assemblies (HDAHAOAD)

Keywords

• Passive microwave components
• RF and microwave filters
• Waveguide components
• Space-qualified circulators
• Military microwave hardware

Headquarters

HQ city

Georgetown

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Microwave Component Sales: Design and manufacture of passive microwave components and assemblies including circulators, switches, filters, waveguides, equalizers, power dividers, couplers, multiplexers, bias tees, and terminations for space, military, scientific, and commercial applications. Revenue generated through product sales via direct representatives network and quote-based procurement processes.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Sierra Microwave Technology designs and manufactures passive microwave components and integrated assemblies for space, military, scientific, and commercial customers. The portfolio spans frequencies from 0.225 GHz to 65 GHz and includes circulators, isolators, PIN-diode and latching ferrite switches, filters, waveguide adapters, power dividers, couplers, multiplexers, bias tees, equalizers, and terminations, with both catalog offerings and custom integrated assemblies.

Product overview

Sierra Microwave Technology designs and manufactures microwave components and assemblies including: Circulators, Switches, Filters, Waveguides, and Integrated Assemblies for Space, Military, Scientific, and Commercial Customers. The company offers a comprehensive portfolio of passive microwave components organized into 12 core product lines: Bias Tees (up to 26.5 GHz for military/commercial), Couplers (waveguide and coaxial test couplers for space), Equalizers (fixed gain up to 18 GHz), Filters (waveguide, combline, interdigital, lumped element), Hybrids and Power Dividers (waveguide and coaxial), Integrated Assemblies (custom combinations), Isolators/Circulators (up to 65 GHz with multiple interface options), Latching Ferrite Switches (radiation hardened to 1 Mega Rad), Multiplexers (high rejection for space/military), PIN-Diode Switches (up to 40 GHz with switching speeds to 25 nsec), Terminations (high and low power), and Waveguide-to-Coaxial Adapters. The product portfolio serves space, military, scientific, and commercial applications with offerings ranging from catalog narrowband components to fully customized integrated assemblies.

Differentiator

Problem solved

Functional benefit

Products and services

• Isolators/Circulators Passive ferrimagnetic devices up to 65 GHz with tabbed, connectorized, waveguide, or substrate interfaces, including narrowband, broadband, high-power, and high-ratio (4-port) options for space, military, and commercial applications.
• PIN-Diode Switches Solid-state switches up to 40 GHz in drop-in and connectorized packages with both in-line and radial options, fast switching down to 25 nsec, reflective and absorptive models with single to five throws, available as space-qualified devices.
• Latching Ferrite Switches High-speed ferrite switches with waveguide switching times less than 500 nsec and modulation rates to 20 kHz, radiation hardened to 1 Mega Rad, space qualified, supporting custom switch assemblies for redundancy, autotrack, and transmit/receive switching.
• Filters Waveguide, combline, interdigital, and lumped element filters for military and space applications, with high return loss, low loss, and high rejection specifications.
• Couplers Waveguide and coaxial test couplers for space applications, including high- and low-power designs, cross guide, broad wall, narrow wall, and loop coupler designs with high directivity, high return loss, and low insertion loss.
• Equalizers Fixed gain equalizers up to 18 GHz available in narrowband and broadband configurations for military applications, including models SME-0510 through SME-6018.
• Hybrids and Power Dividers High and low power waveguide and coaxial 3 dB hybrids and power dividers with SMA, 2.9 mm, or TNC connectors, designed for low loss and robust mechanical performance in extreme environments.
• Multiplexers High and low power waveguide and coaxial diplexers and multiplexers with high out-of-band rejection and low loss for space and military applications including TT&C, ELINT, and ECM.
• Bias Tees Low loss, very broadband bias tees up to 26.5 GHz with DC voltages of 50 to 100 V max for military and commercial applications, including models SM41170, SM41240, and SM41244.
• Terminations Waveguide, coaxial, and flanged low and high power terminations for space applications with unique thermal stress relief design, very low thermal resistance, and exceptional reliability.
• Waveguide-to-Coaxial Adapters Custom high-performance adapters for space applications in all waveguide sizes from WR-340 to WR-15 with SMA, 2.9 mm, and TNC connector options, rated for -200 to +150 degrees C.
• Integrated Assemblies Custom integrated assemblies combining any combination of Sierra's product lines, with improved performance compared to individual components and simplified control interfaces for space and military applications.

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Scale indicators3 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Mercury Systems: Defense-focused provider of RF, microwave, and millimeter-wave components and sub-systems for radar, EW, and space applications — directly comparable to Sierra's hi-rel passive microwave portfolio and customer base.
• Herley Industries (Ultra Electronics): Provider of RF, microwave, and millimeter-wave components and sub-systems for EW, radar, and missile programs — competes with Sierra for hi-rel defense and space passive component sockets.
• TRAK Microwave (Smiths Interconnect): Supplier of RF and microwave ferrite devices, passive components, and integrated assemblies for defense and space applications — directly overlaps with Sierra's isolators, circulators, and sub-system offerings.
• Teledyne Microwave Solutions: Designs and manufactures passive and active microwave components and sub-systems for radar, EW, and satellite communications — operates in the same hi-rel space and defense niches as Sierra.
• K&L Microwave (Marki Microwave / Knowles): Specialty manufacturer of RF and microwave filters, multiplexers, and integrated assemblies for military and commercial applications — key direct competitor in Sierra's filter and multiplexer lines.
• Planar Monolithics Industries (PMI): Niche designer/manufacturer of hi-rel RF and microwave components (filters, switches, limiters, integrated assemblies) for space, defense, and EW — closely comparable to Sierra's product mix and customer profile.
• MITEQ (L3Harris Technologies): Long-standing supplier of passive microwave components (isolators, circulators, filters, switches) for space and defense — directly competes with Sierra across nearly every product line and end market.

Broad incumbents

• Cobham Advanced Electronic Solutions: Broader aerospace/defense electronics incumbent offering RF, microwave, and antenna solutions across many platforms — overlaps with Sierra on space-qualified passive components but competes as a larger, multi-product portfolio.
• Communications & Power Industries (CPI): Diversified electronics manufacturer serving defense, space, and communications with traveling wave tubes, RF components, and integrated assemblies — overlaps Sierra on high-power microwave and space-qualified passive devices.
• Skyworks Solutions: Large-scale RF/microwave semiconductor and component supplier with growing exposure to aerospace/defense — a broader incumbent whose defense catalog and custom RF solutions increasingly overlap Sierra's addressable market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 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 Sierra Microwave Technology