Teledyne Microwave Solutions (TMS) offers ultra-miniature discrete filters in a wide range of frequencies and design approaches. In-house research and development efforts, coupled with propriety computer software, helps maintain TMS at the leading edge of technology.
Filters with excellent thermal characteristics are achievable through the use of high Q, thermally stable dielectric materials and special construction techniques.
High mechanical integrity is achieved with lightweight aluminum housings when used in conjunction with our in-house laser welder.
TMS LUMPED ELEMENT FILTERS AT-A-GLANCE

- FREQUENCY: 10MHz to 20GHz
- BANDWIDTHS: <1% to Multi-Octave
- TECHNOLOGY: Lumped Element
- CONFIGURATION: Filters, Multiplexers, Diplexers, Switched Filters, LNA Filters
- PACKAGING: Connectorized, Pin & SM
- EXPORT CLASSIFICATION: EAR99 & ITAR
- INTEGRATION WITH OTHER PRODUCTS: LNA's, Solid State Switches
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TMS fabricates its filters using resonators with discrete capacitors and inductors, i.e. in a lumped form. High-Q porcelain chip capacitors and air spaced inductive coils are soldered to an RF quality substrate.
Unique proprietary techniques are used to compensate for changes in filter performance over temperature. Stability of <5 ppm/degree C are readily achieved over the temperature range –55 to +125 degrees C.
TYPES
- Bandpass
- Lowpass
- Highpass
- Notched
APPLICATIONS
- Military
- Commercial
- Comms
- T&M
- EW
- Missile
- Space
- Payload
Combline filters are bandpass filters used in the frequency range of 100MHz to 20GHz The structure consists of a series of TEM resonators of circular or rectangular cross-section resonated by a capacitor at the open circuit end. The bandwidth and response of the filter is governed by the coupling of each resonator to its immediate neighbor. This is also a function of the resonator size, resonator spacing and ground plane separation. Typical construction is silver-plated aluminum, which achieves the lowest passband loss while maintaining a light weight. Computer design programs result in close correlation between theoretical and actual performance.
TMS COMBLINE FILTER PRODUCTS AT-A-GLANCE

- FREQUENCY: 10MHz to 20GHz
- BANDWIDTHS: <1% to 60%
- TECHNOLOGY: Combline
- TYPES: Bandpass & Notched
- CONFIGURATION: Filters, Multiplexers, Diplexers, Switched Filters, LNA Filters
- PACKAGING: Connectorized, Pin & SM
- PLATFORMS: Ground, Airborne, Marine, Space
- APPLICATIONS: Military, Commercial, Comms, T&M, EW, Missile, Space Payload
- EXPORT CLASSIFICATION: EAR99 & ITAR
- INTEGRATION WITH OTHER PRODUCTS: LNA’s, Solid State Switches
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In applications where flat group-delay narrowband filters are required, linear phase responses of typically 1 to 5% variations over 70% of the filter bandwidth can be achieved making them ideally suited for critical receiver front-end or transmitter applications
TMS has combined excellent robust filter characteristics with years of experience to offer its customers a unique capability that meets the most demanding requirements.