Bandpass Filters


Introduction (BP-R)

Stable Microwave Oscillators And Filters (BP-R)
Stable Microwave Oscillators And Filters (BP-R)

Dielectric Bandpass Filters (BP-R) Have a Low Ripple In Bandwidth 0.5 (dB) Max.. Dielectric bandpass filter, known as ceramic bandpass filter, dielectric ceramic filter, or microwave ceramic filter in standard resonator sizes. Token (BP-R) series center frequency range is from 915 MHz to 1220 MHz basic rules of ceramic band-pass filters and diplexer. Insertion loss is from 2.0 ~ 3.5 (dB) max and a ripple in bandwidth 0.5 (dB) max.

The higher the Q-factor of a resonators/band pass filters, the better electrical performance for insertion loss. The more dielectric resonators combined together for a band pass ceramic filters, the better rejection, attenuation, and stopband will be. Determinant factor for Insertion Loss Q factor of a resonator, the bandwidth of a filter, and the number of resonators Determinant factor for Attenuation/rejection The number of resonators, connection type of resonators.

Token (BP-R) RF filters can be customed designs and tighter tolerances available on request. Token (BP-R) series are primarily designed for high dielectric constant lines and conform to the RoHS directive.

The (BP-R) series feeature with high permittivity, high dielectric constants, extremely temperature stability and high Q that enables the design of stable microwave oscillators and filters. High dielectric constant (K) materials and associated products are also available for custom application requirements.
Please contact our sales for more information.

Features :

  1. Low insertion loss.
  2. Size small and light.
  3. High frequency selectivity.
  4. Temperature compensated.

Applications :

  1. Trunked radio system.
  2. Cellular, cordless phone.
  3. Military affairs, Base station.

Dimensions (Unit: mm) (BP-R)

(BP-R) Dimensions
(BP-R) Dimensions

Typical Specifications (BP-R)

Part No. Center
Band Width
Ripple in
BP63R915-01 915 fo±5 2.5 0.5 1.5 45 at fo±100
BP64R881-02 881 fo±10 2.0 0.5 2.0 60 at fo±100
BP84R650-01 650 fo±5 2.5 0.5 1.5 70 at fo±55
BP84R1200-03 1200 fo±15 2.0 0.5 2.0 70 at fo±60
BP74R959-02 959 fo±10 2.0 0.5 2.0 70 at fo±80
BP75R836-01 836 fo±5 3.5 0.5 1.5 80 at fo±50
BP76R1220-02 1220 fo±10 2.5 0.5 2.0 80 at fo±50

Order Codes (BP-R)

BP 3 4R 1765 - 01
1234 5
Part Number
Number of Resonator
Center Frequency (MHz)
01 10MHz
02 20MHz
03 30MHz