Dielectric Filters

(DF-C/D)

Within "DF Series" section :: 1. Dielectric Filters DF-A Type; 2. Dielectric Filters DF-B Type; 3. Dielectric Filters DF-C/D Type; 4. Dielectric Filters DF-3 or More Poles; 5. Dielectric Filters BP-R Type; 6. Dielectric Filters LJ Type; 7. Dielectric Filters BP-S Type

Token Two Block-Type Dielectric Filters (DF-C/D) range up to 5.8GHz Preview

Dielectric Filters - (DF-C/D) Series

Token two block-type dielectric RF filters have been designed for cellular basestation applications that use a digital pre-distortion amplifier (DPD), as they feature a wide pass band and flat ripple performance, which are required for DPD PA design.

Applications also include RF and microwave communications such as satellite and TV transmission, wireless security systems, radar, GSM, 3G, GPS, CT1, CT2, 900MHz, 1.8GHz, 2.4GHz, 5.8GHz Cordless Phone, wireless earphone, wireless microphone, aerospace and military.

The (DF-C/D) filter's small size (4.5 x 4.5 x 2.0 mm) means they require more less mounting space with a ripple of 1.0 dB max and insertion loss 2.0 (dB) max. Center frequency range from 1575 MHz to 5800 MHz with V.S.W.R 2.0 max.

The surface mount RF Dielectric Filters (DF-C/D) conform to the RoHS directive and package is suitable for automatic pick and place equipment which assures mechanical stability and excellent lead coplanarity. Customed designs and tighter tolerances are available on request. Application of specific designs also available including different Dielectric values and Q specifications adjusted to frequency requirements.

Filters (DF-C/D) Dimensions (Unit: mm)

Two Block-Type Dielectric Filter (DF-C/D) Type Dimensions

Two Block-Type Dielectric Filter
(DF-C/D) Dimensions

Filters (DF-C/D) Typical Specifications

Part No.	Center Frequency (MHz)	Band Width (MHz)	Insertion Loss (dB) max.	Ripple in Band Width (dB) max.	V.S.W.R max.	Attenuation (dB) min. (MHz)
DF1575S40C	1575	fo±20	2.0	0.7	2.0	20 at fo-100; 18 at fo+100
DF1855S70C	1855	fo±35	2.0	0.7	2.0	20 at fo+300; 20 at fo-300
DF1890S80C	1890	fo±40	2.0	0.7	2.0	15 at fo+250; 35 at fo-250
DF1950S90C	1950	fo±45	3.0	0.7	2.0	45 at fo+975; 45 at fo-975
DF2332S100C	2332	fo±50	2.5	0.7	2.0	25 at fo+500; 40 at fo-500
DF2450S100C	2450	fo±50	2.0	0.7	2.0	12 at fo+250; 15 at fo-250
DF3066S170D	3066	fo±85	2.0	1.0	2.0	10 at fo+300; 15 at fo-300
DF3480S120D	3480	fo±60	2.0	1.0	2.0	10 at fo+500; 20 at fo-500
DF3650S150D	3650	fo±75	2.0	1.0	2.0	15 at fo+750; 25 at fo-750
DF4880S160D	4880	fo±80	2.0	1.0	2.0	5 at fo+350; 15 at fo-350
DF5800S200D	5800	fo±100	2.0	1.0	2.0	5 at fo+400; 15 at fo-400

Filters (DF-C/D) Typical Characteristic

Dielectric Filters (DF-C/D) Type Typical Characteristic I

Dielectric Filter (DF-C/D) Type I
Center 915.000MHz (-1.739dB) & (-17.998dB) Span 400.000MHz Typical Characteristic

Dielectric Filters (DF-C/D) Type Typical Characteristic II

Dielectric Filter (DF-C/D) Type II
Center 904.000MHz (-1.731dB) & (1.289dB) Span 300.000MHz Typical Characteristic