Filters

NuWaves’ NuFilter™ 05LPLE-2500-SFSF-M01 is a low-cost, miniature, low-pass RF filter designed to reduce harmonics at the output of transmitters operating through S-Band. The miniature filter provides superior harmonic filtering, as demonstrated by the rejection levels of greater than 25 dB from 3.25 GHz to 5 GHz. This high-performance module accepts input power levels up to 50 W, with only a minimal 0.5 dB of insertion loss in the passband frequency range of DC to 2500 MHz.

Corry Micronics has developed a lab grade filter module that passes the super speed USB3.1 at 10Gbps designed specifically for LTE band rejection.  The CFM1-USB31-C and CFM1-USB31-AB are designed to pass data between USB 2.0, USB 3.0 and USB 3.1 devices at up to 10 Gbps while rejecting conducted and radiated interference and noise.  These products are used with an RF shielded enclosure or shielded room to isolate products undergoing testing that require an electrically quiet environment.

Corry Micronics offers the CMIINV-5BT2-RM and CMIINV-5BLTE-RM cellular band switched filter modules with optional switched amplification for monitoring the transmit or receive cellular signals. Features include high out of band rejection specifications, high band to band isolation of 50 dB minimum, low noise figure, and standard 50 ohm impedance.

As 5G testing continues to grow and demand more requirements for filtering components. Corry Micronics (CMI) has developed all types of filtering using different technologies, and several that have been allocated for 5G. At lower frequencies in the US market centered around 600 MHz, filtering can be easily, and cost competitively designed using several different filtering technologies. Types of filters range from LC to cavity, combline, interdigital, Helical, ceramic resonator, and tubular.

MtronPTI incorporates RF CAD design and synthesis into their X and Ku band low profile cavity filters. These low-profile, laser-sealed filters are designed to not only reduce the overall mechanical footprint, but also offer improved electrical performance in space, SATCOM, EW and avionics applications.

Qorvo’s QPQ1907 is a high-performance, high power Bulk Acoustic Wave (BAW) band-pass filter designed to enable coexistence of WiFi and LTE signals within the same device or in close proximity to one another. This device is ideally used in WiFi/Bluetooth, consumer premise equipment (CPE), small cells, and smart meter applications.

Knowles Precision Devices (DLI) offers filter technology that addresses the challenge of implementing high-performance filters at mmWave frequencies. Their 26 GHz, 28 GHz, and 39 GHz filter solutions deliver 3 GHz of bandwidth, greater than 50 dB rejection, and are 20x smaller than current alternatives while implemented in surface mount packages for standard tune-free assembly. They are capable of stable operation within the -55°C to +125°C temperature range. Custom design services are available.

Qorvo offers the new QPQ1295 high-performance BAW filter specifically designed for Band 25 downlink. Features include low insertion loss, high attenuation, a 65 MHz bandwidth, and Pb-free, RoHS compliance.