Mini-Circuits has developed a line of cavity filters that operate from 300 MHz to 50 GHz with high rejection and selectivity. Cavity filters achieve high Q, have steeper rejection skirts, and higher power handling than other filter technologies, such as ceramic resonator filters. These are utilized where low passband insertion loss and high rejection of neighboring channels/spurious emissions are critical. Applications include military and commercial fixed site and mobile networks, as well as satellite communications.
Mini-Circuits’ coaxial cavity filters are designed by implementing resonant structures with very high Q and are ideal for narrow-band, high-selectivity applications. These designs can provide bandwidths as narrow as 0.1% with very high selectivity and excellent low noise floor. Low insertion loss combined with excellent power handling makes them well-suited for transmitter and receiver front ends. Advanced filter design and construction enable stopband width greater than 3x the center frequency.
Mini-Circuits’ coaxial cavity filters feature a special protective assembly to prevent accidental de-tuning that would otherwise require expensive replacement or return to the factory for re-tuning. Precise machining allows the realization of cavity filters with small form factors for applications where size is critical.
Key Features of Cavity Filters from Mini-Circuits:
- High rejection & selectivity
- Passbands up to 50 GHz
- Stopbands up to 65 GHz
- Bandwidths as narrow as 0.1%
- 100+ dB rejection
- Rugged construction
Applications:
Click here to see cavity filters from Mini-Circuits listed on everything RF.
