Premium cutoff frequency: Filtronetics, Inc designs & manufactures frequency control products including high, low, band pass, notch, reject, electronic filters, TCXO, VCXO, and related oscillators and quartz crystals in um-1 and SMD packages in the KHz, MHz and GHz range.

	FILTRONETICS, Inc. designs and manufactures a complete array of filters, oscillators and crystals.
	Cutoff frequency Click here to search our filters product database The 3dB cutoff frequency of a lowpass filter is defined as the highest frequency where 3dB or less of attenuation occurs. Conversely, the 3dB cutoff frequency of a highpass filter is defined as the lowest frequency where 3dB or less of attenuation occurs. On bandpass and bandstop filters the 3dB low cutoff and 3dB high cutoff refer to the low and high edges of the 3dB passband respectively. The reference is usually taken at the point of minimum insertion loss. Normally the 3dB cutoff frequency is the minimum pass bandwidth of a filter. In some cases, a filter passband cutoff frequency can also be specified as 0.5 dB cutoff, 1.0 dB cutoff or 6dB cutoff frequency.   The term 3dB cutoff frequency is used in conjunction with lowpass and high pass filters when defining the passband of the filter. However, the more generic term of x dB cut-off frequency (x-usually greater than 6dB) is used when specifying the stopband of a lowpass or highpass filter. Above the cut-off frequency, for a lowpass filter, the attenuation should be greater than x dB up to some point of ?spurious?. Above this frequency other modes of resonance occur which degenerates the attenuation. Below the cut-off frequency, for a highpass filter, the attenuation should be greater than x dB.   Filtronetics, Inc. can supply both lowpass and highpass filters with a 3 dB cut-off from 60 Hz to 3 GHz. Most highpass and lowpass filters are realized using LC, microstrip, stripline, or coaxial technology. They can be monotonic or elliptic designs with characteristic responses of Buterworth, Chebyshev, Cauer, Gaussian, Bessel (maximally flat delay), Equal ripple delay, Legendre, minimum insertion loss, synchronously tuned, or m derived image parameter responses.

FILTRONETICS, Inc. located in Kansas City, Missouri was established in 1970. Over the past 35 years, Filtronetics, Inc. has developed a broad line of frequency products for diverse applications ranging from communications to instrumentation for commercial, industrial and military applications. Filtronetics, Inc. is known for the ability to consistently provide the highest quality custom LC, Microwave, Ceramic, SAW and Crystal filters available. Filter types include bandpass, low pass, high pass, notch diplexer and dual band. The company’s mission is to become a valued supplier for all customers, which range from University researchers to Fortune 500 Companies. In addition to custom filters, a broad line of crystals, monolithic filters and oscillators are offered. Filtronetics, Inc. works with our customers to guide them through the development process with technical support for critical filter and oscillator applications such as PCS, GSM, E-GSM, WLL, B-WLL, LMR, ISM 915, ITM 2000, GPS, TRS, LMR, CT-2,E-TACS, SAT COM ATM, SONET, LAN, data processing and high reliability applications. Filtronetics, Inc. offers various alternatives and related pros and cons to optimize the cost benefit rational. Filtronetics, Inc. continually updates its Kansas City facility and equipment with the latest technology.

Quality Team:
Quality is the foundation of Filtronetics, Inc. success. The Quality Control department combines more than 35 years of experience. Current quality standards are based on and registered to ISO-9000. Customer or project specific requirements are also available, as well as conformance to IPC-610, MIL-STD-202, MIL-STD-883 and many other standards.

Hi-Reliability:
Filtronetics, Inc. is responsible for the design and production of numerous high reliability filters used by the United States government and government related programs. 

Filtronetics, Inc. has participated by providing electronic components and electrical engineering expertise in many leading government sponsored electrical component testing programs.