Frequency Range from 500 Hz to 1 GHz

Butterworth Bandpass Filters offer a monotonic passband and stopband response. Available packages include PCB, radial RF pins, SMT, SMA and BNC connectorized cases. These are available for low frequency, 10-20 kHz RFID applications, RF and microwave applications including ADC and DAC low distortion testing, data acquisition, receivers and transmitters. Specify any center frequency from 500 Hz to 1 GHz.

TTE offers a low THD (low distortion) filter option for this series. Please refer to the Part Number Derivation section below where the “T” option is mentioned.

For an overview of TTE’s low THD filters please click here.   

Series NumberNumber of Pole Pairs (Elements)-3dBc Bandwidth Selection
KB33 (6)3% to 25% fo
KB44 (8)3% to 25% fo
KB55 (10)3% to 25% fo
KB66 (12)3% to 25% fo
KB77 (14)5% to 25% fo
KB88 (16)5% to 25% fo
KB99 (18)5% to 25% fo
  • Operating Temperature Range:
    0°C to +70°C
  • VSWR at fo: 1.5:1 Typical
  • Input Power: 20 mW
Part Number Derivation:
  1. Series, KB
  2. Number of poles, 6
  3. The “T” option specifies a filter with low THD for ADC/DAC testing. When selected therein, THD is > -80dBc, -96dBc typical.
  4.  “R” RoHS compliant. Allow for longer lead time.
  5. The Center Frequency, fo
  6. The -3dBc passband bandwidth. It may also be specified as a percentage of fo. Thus, instead of 535 kHz, use 5P.
  7. Terminations
  8. Case selection from the case selection guide. “T” option cases are larger than standard.
For assistance please call 1-716-532-2234 or email us at tte@tte.com
All TTE products are Made in the USA.  Most are delivered within 2-3 weeks.  Expedited lead times of  3-5 days are available on many products
More information about TTE’s custom design expertise is provided in Capabilities.