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July 2025
Keysight 44476A
Keysight Agilent 44476A, High Isolation, 3 Switches, 3 Independent Coaxial Relays, Microwave Multiplexer Module
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
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Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Keysight 44476A Microwave Multiplexer Module
The Keysight 44476A Microwave Multiplexer Module is a three-way 1-to-2 switching unit that is rated for operation up to 18 GHz. It routes microwave signals through three distinct SPDT 50-ohm coaxial relay sections. Each relay unit controls signal transfer between selected sources and measurement channels. The module is suitable for general microwave switching tasks in receiver and transmitter test setups.
The 44476A multiplexer unit operates across a frequency range from DC to 18 GHz. The impedance matching helps maintain stable performance across connected instruments and devices under test. The 44476A mux module supports multi-band receiver testing and transmitter switching in automated test platforms. It is rated for 1 W average input power during normal operation. It also supports a 100 W peak input power rating for specified signal conditions. The direct current input limit must remain less than ±7 VDC during applied signal operation. These ratings define practical operating boundaries for safe microwave switching and signal protection.
The 44476A microwave module provides high isolation across its microwave operating range. Isolation is greater than 90 dB from DC to 18 GHz based on the specification. The switch design also supports high isolation greater than 90 dB up to 26 GHz.
The insertion loss remains below 0.25 dB from DC to 2 GHz across selected paths. From DC to 18 GHz, the insertion loss remains below 0.50 dB during operation. Low insertion loss supports accurate microwave power transfer where measurement margins remain narrow. The 44476A microwave module provides stable repeatability after 10? switching operations with a value of 0.03 dB for consistent path performance during switching sequences over time. It remains useful in production test systems where relay movement occurs frequently during testing.
The VSWR performance is specified across multiple microwave frequency ranges by using 3 mm SMA connectors. The specified voltage standing wave ratio from direct current (DC) to 18.0 remains below 1.40 across paths. The Keysight 44476A multiplexer module uses various terminal connectors, which are positioned on edge for easy access. The connector layout helps to support direct coaxial wiring in compact test arrangements without adapters.
| Model | Keysight 44476A |
|---|---|
| Manufacturer | Keysight Agilent |
| Part Type | Microwave Multiplexer Module (Triple 1-to-2, 18 GHz) |
| Switch Configuration | Triple 1-to-2 |
| Relay Type | Three independent SPDT coaxial relays |
| Frequency Range | DC to 18 GHz |
| Characteristic Impedance | 50 Ohms |
| Peak Input Power | 100 W |
| Connector Type | SMA / 3 mm SMA connectors |
| Input Power Rating | 1 W average |
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