This is a low pass filter for the record books. With the connectors, it measures over 19 “in length. The pass band is 50MHz to 1990 MHz with less than 1dB of pass band insertion loss. It took over 39 poles to meet the rejection requirements of greater than or equal to 80dB at 2140MHz to 3600MHz.
This cavity filter operates in the 1150-1650 MHz frequency range, has an insertion loss of <0.3dB, <1.5:1 VSWR, and a DC-900MHz@>40dB; 1800-3000MHz@>40dB rejection. Additional features include female-SMA connection and 50ohms impedance. Download the datasheet for additional specifications.
NIC provides specialized LC and Crystal Filters for a wide variety of requirements and applications in the commercial, space, and military markets. Some of the filters offered include delay, phase, amplitude equalization, Gaussian, Bessel, phase matching, space qualified, and many more.
DLI’s series of surface mount lowpass filters are compact and fully shielded. They feature frequency stability over temperature, excellent repeatability, 50Ω characteristic impedance, and a -55oC to +125oC operating temperature.
The TF series of coaxial/tubular filters by PDI cover the 10MHz to 18GHz frequency range. They’re available in bandpass and lowpass configurations and are ideal for ground-based radar, MRI and NMR systems, airborne and satellite (limited) applications, antenna masts, and other high-power applications.
MtronPTI expands their RF & microwave filter line with the introduction of digitally tuned bandpass filters. Software defined radios (SDR) and cognitive radios require flexible RF front ends, similar to frequency hopping front ends of military communication radios. MtronPTI’s low loss TF010x digitally tuned bandpass filters are designed for exactly that.
BoCen Microwave designs and manufactures a full line of high performance Bandpass, Lowpass, Highpass, and band-reject filters and integrated filter assemblies from 1MHz to 40GHz.
The 312 Series of pre-filtered GPS LNAs (low noise amplifiers) features a low noise figure, a wide input voltage range, compliance with many MIL-STD-810 and MIL-STD-461 requirements, and more. The LNAs come in a small, lightweight hermetically sealed package.