Multiplexers
Our proven multiplexer solutions are built for critical signal filtering. We offer a wide range of capabilities, including:
- 2 to 8 channels
- From 10MHz up to 20Ghz
- Contiguous and non-contiguous configurations
- Support for narrow and broad bandwidths
- Internally terminated filters for improved VSWR matching
- Low-loss crossovers
- Phase Matching
Multiplexer Products
Packaging
Q Microwave's design approach emphasizes the use of standard components. For our customers, this means standardized packaging and inputs are preferred in order to reduce cost and delivery time. Q Microwave's standard packaging includes the following configurations.
Lumped Element | Ceramic Resonator | Cavity/ Combline | |
---|---|---|---|
Connectors | ✓ | ✓ | ✓ |
SMT | ✓ | ✓ | ✓ |
Leads | ✓ | ✓ | ✓ |
Surface Mount Configurations
Achieves the most popular solution based upon ease of installation and small size.
- Construction - The filter is built on a soft substrate and covered with an EMI shield. The input, output, and ground contacts are provided on the under side of the package. High temperature solder is used in its construction in order to improve yield during installation.
- Mounting - This packaging approach requires your substrate layout to accept the input/output pad configuration for the filter. These layout requirements can be provided in advance of your purchase. Installation is typically achieved with common Sn63 solder reflow processes. During installation, care must be taken to ensure that the filter's internal temperature is not permitted to exceed 220C. Recommended solder reflow profiles are available at our website.
- Applications - Typically used for applications below 6 GHz. Performance is heavily dependent upon the quality of the ground as determined by the circuit layout and attachment. Rejection performance is typically limited to 50 dBc.


Provides a surface mountable design while allowing the use larger metal packages that may be required for hermetic devices or filters with machined packages.
- Construction - The filter is typically built within a stainless steel, kovar, or brass housing with RF feedthrus at the input/output. The filter is EMI sealed and can be hermetically sealed if necessary.
- Mounting - Given the relative mass of the package, mounting is typically achieved through mechanical fasteners. The base of the housing provides ground and the input and output pins are pre-formed to make contact with your substrate's circuit.


Typically used to achieve higher performance transitions at higher frequencies. The microstrip geometry provides lower loss and improved isolation performance. The filter is typically built within a kovar housing and a non-hermetic EMI seal. The package should be epoxy attached or solder reflowed into your assembly. Interconnects must be made and optimized by the customer using either wire bonding or soldering processes.
