Ceramic resonators substrates and filters

Custom-tailored Ceramic Filters and Diplexers

Ceramic coaxial resonators and multiresonator blocks are perfectly suitable as basic components for T-Ceram custom-tailored Bandpass (BP), Bandreject (BR) and Lowpass (LP) filters, duplexers, diplexers, triplexers and multiplexers. Modern ceramic materials and silver coatings cause low insertion loss, excellent temperature stability, wide frequency range and small size. The ceramic filters are not sensitive to mechanical shock, vibration, temperature, or humidity. Most of parameters can be fairly change according to customer specification.

Single coaxial resonators or triple resonator blocks are substantial elements of many types of filters, duplexers, diplexers and triplexers. High permittivity ceramic substrates are used for custom-tailored Bandreject (BR), Lowpass (LP) and Highpass (HP) filters.

Basic characteristics

Frequency range (Center frequency F₀ ; from ... to)	350 MHz ... 6 000 MHz
Bandwidth (3dB passband for BP filter or band of guaranteed attenuation for BR filter)	1 ... 250 MHz ; 0.5 % ... 15 % of F₀
Insertion Loss (Insertion loss at center frequency F₀)	0.4 ... 3 dB
Ripple (Max. Insertion loss variation across the passband)	0.1 ... 3 dB
Return Loss (The worst Return loss across the passband)	20, 18, 16, 15, 14, 12 dB
Impedance	50 Ohm
Connectors	custom (tabs, pins, SMA, SMD ...)
Number of sections	2, 3, 4, 6, 8
Temperature range	-55°C to +85°C

Custom-tailored Bandpass Dielectric Filters - Typical examples

T-CERAM Number	Center Frequency Fo (MHz)	Pass Band *1 (MHz)	IL @ Fo (dB)	Ripple *2 (dB)	RL *3 (dB)	Attenuation (dB)	at (MHz)	No. of poles
TDF-BP-3-0390-16	390	16	1.5	0.4	15	33	360	3
TDF-BP-3-0400-08	400	8	1.6	0.4	18	45	370	3
TDF-BP-6-0420-80	420	80	0.6	0.4	16	45	370	3
TDF-BP-3-0430-08	430	8	1.6	0.4	18	55	490	3
TDF-BP-3-0433-35-B01	433	35	0.6	0.2	16	60	325	3
TDF-BP-3-0476-10-S05	476	10	1.6	0.4	15	35	446	3
TDF-BP-3-0489-04	489	4	1.2	0.2	16	35	460	3
TDF-BP-2-0502-04	502	4	1.0	0.2	16	30	530	2
TDF-BP-2-0523-02	523	2	1.3	0.4	16	20	533	2
TDF-BP-3-0700-08	700	8	2.1	0.3	16	28	720	3
TDF-BP-3-0708-08	708	8	2.1	0.3	16	28	728	3
TDF-BP-3-0716-08	716	8	2.1	0.3	16	28	736	3
TDF-BP-3-0750-18H	750	18	2.5	3.0	12	25	770	3
TDF-BP-3-0750-18L	750	18	2.8	3.0	12	30	730	3
TDF-BP-3-0754-09	754	9	1.8	0.4	16	30	774	3
TDF-BP-3-0800-10	800	10	2.3	0.5	14	65	850	3
TDF-BP-3-0840-28	840	28	1.5	1.5	14	22	871	3
TDF-BP-3-0842-10	842	10	1.9	0.3	18	42	880	3
TDF-BP-3-0869-10	869	10	1.8	0.5	14	25	889	3
TDF-BP-3-0886-35	886	35	1.1	0.8	16	25	936	3
TDF-BP-3-0910-15	910	15	2.0	0.6	16	30	880	3
TDF-BP-3-0942-35	942	35	1.0	0.4	18	27	872	3
TDF-BP-3-0948-26	948	26	1.2	0.4	16	30	1000	3
TDF-BP-3-0995-14	995	14	1.6	0.5	16	32	957	3
TDF-BP-4-0955-130	995	130	0.8	0.6	16	60	755	4
TDF-BP-3-1000-16	1000	16	2.0	1.5	16	52	1050	3
TDF-BP-3-1024-10	1024	10	1.4	0.3	18	35	1074	3
TDF-BP-3-1079-70	1079	70	1.0	0.6	14	32	1214	3
TDF-BP-4-1080-130	1079	70	0.7	0.4	16	55	880	4
TDF-BP-3-1085-14	1085	14	1.8	0.5	14	56	1205	3
TDF-BP-3-1086-40	1086	40	1.4	0.6	14	50	1214	3
TDF-BP-3-1086-56	1086	56	1.2	0.8	14	40	1214	3
TDF-BP-3-1090-20	1090	20	1.6	0.4	14	60	1210	3
TDF-BP-3-1142-40	1142	40	1.4	0.6	14	45	1270	3
TDF-BP-3-1142-56	1142	56	1.2	0.5	14	35	1270	3
TDF-BP-3-1189-51	1189	51	1.1	0.5	15	35	1300	3
TDF-BP-4-1205-150	1205	150	0.7	0.2	14	50	1005	4
TDF-BP-3-1220-20	1220	20	2.0	0.6	16	45	1288	3
TDF-BP-3-1227-28	1227	28	1.8	0.8	15	30	1277	3
TDF-BP-3-1228-16	1228	16	1.5	0.3	16	60	1328	3
TDF-BP-3-1254-40	1254	40	1.6	0.8	14	50	1382	3
TDF-BP-3-1254-56	1254	56	1.2	0.8	12	43	1382	3
TDF-BP-3-1265-90	1192	80	1.0	1.0	14	20	1365	3
TDF-BP-3-1275-50	1275	50	1.2	0.5	15	20	1350	3
TDF-BP-3-1282-112	1282	112	1.2	0.4	14	25	1438	3
TDF-BP-3-1285-30	1285	30	1.2	0.4	16	30	1292	3
TDF-BP-3-1296-18	1296	18	2.1	1.0	14	28	1326	3
TDF-BP-3-1300-07-SM1	1300	07	3	0.3	16	40	1326	3
TDF-BP-3-1310-40	1310	40	1.8	0.8	14	52	1438	3
TDF-BP-3-1310-56	1310	56	1.1	0.5	16	35	1438	3
TDF-BP-3-1313-26	1313	26	1.2	0.4	15	28	1363	3
TDF-BP-4-1325-150-S03	1325	150	0.5	0.2	14	35	1125	4
TDF-BP-3-1326-60-SM1	1326	60	0.4	0.2	15	15	1404	3
TDF-BP-4-1330-150	1330	150	0.7	0.4	14	40	1130	4
TDF-BP-3-1336-10	1336	10	2.3	0.4	16	55	1390	3
TDF-BP-3-1368-10	1368	10	2.5	0.7	15	58	1418	3
TDF-BP-3-1413-100	1413	100	0.5	0.4	16	31	1613	3
TDF-BP-3-1440-20	1440	20	1.6	0.3	16	40	1509	3
TDF-BP-3-1490-15	1490	15	2.7	0.3	15	42	1540	3
TDF-BP-3-1490-160	1490	160	0.8	0.6	14	35	1806	3
TDF-BP-3-1498-20	1498	20	1.5	0.4	15	18	1528	3
TDF-BP-3-1517-100	1517	100	0.8	0.5	14	20	1643	3
TDF-BP-3-1539-41	1539	41	1	0.5	14	50	1675	3
TDF-BP-3-1550-100	1550	100	1.0	0.3	16	18	1700	3
TDF-BP-3-1575-16	1575	16	1.7	0.4	16	58	1675	3
TDF-BP-3-1601-10	1601	10	2.2	0.4	15	24	1626	3
TDF-BP-3-1651-49	1651	49	0.9	1.0	15	30	1559	3
TDF-BP-6-1685-36	1685	36	1.7	0.4	16	58	1675	3
TDF-BP-3-1725-30	1725	30	1.6	0.4	15	40	1805	3
TDF-BP-3-1842-75	1842	75	1.0	0.5	15	30	1992	3
TDF-BP-3-1863-32	1863	32	1.6	0.5	15	40	1768	3
TDF-BP-3-1868-30	1868	30	1.6	0.3	15	20	1918	3
TDF-BP-3-1955-35	1955	35	1.5	0.4	16	40	1856	3
TDF-BP-6-1985-30	1985	30	2.3	0.6	16	55	2050	6
TDF-BP-4-1988-40	1988	40	0.8	1	16	54	2048	4
TDF-BP-6-1995-30	1995	30	2.3	0.4	16	60	2065	6
TDF-BP-6-2005-20	2005	20	5	0.8	16	70	2055	6
TDF-BP-3-2048-20	2048	20	2.3	0.5	15	35	2098	3
TDF-BP-6-2080-50	2080	50	2.5	0.7	15	60	2160	6
TDF-BP-3-2140-60	2140	60	1.3	0.5	15	45	2400	3
TDF-BP-6-2140-60	2140	60	2.1	0.8	16	50	2220	6
TDF-BP-3-2235-240	2235	240	1.0	3.5	14	28	2535	3
TDF-BP-3-2320-20	2320	20	2.3	0.3	15	60	2420	3
TDF-BP-3-2325-12	2325	12	2.5	0.4	15	45	2400	3
TDF-BP-3-2335-240	2335	240	1.2	2.0	15	25	2535	3
TDF-BP-3-2370-40	2370	40	1.8	0.3	14	12	2410	3
TDF-BP-3-2760-20	2760	20	2.1	0.3	15	45	2880	3
TDF-BP-3-2890-20	2890	20	2.1	0.3	15	45	2760	3
TDF-BP-3-2998-18	2998	18	2.7	0.5	14	45	2784	3
TDF-BP-3-3900-20	3900	20	1.6	0.5	15	30	4000	3
TDF-BP-3-5000-100	5000	100	2.3	0.5	15	28	5200	3
TDF-BP-3-5400-120	5400	120	1.0	0.8	15	22	5600	3
TDF-BP-3-5470-100	5470	100	1.2	0.5	15	33	5740	3
TDF-BP-3-5560-80	5560	80	1.3	0.5	14	27	5700	3
1 Pass Band can be specified by: - max. IL variation across the passband, min. RL, max. GD variation ... 2 Max. IL variation across the passband *3 The worst Return Loss across the passband					IL = Insertion Loss (in dB) RL = Returnn Loss (in dB) GD = Group Delay (in ns) Attenuation @ = Abs. attenuation at spec. frequency

Custom-tailored Notch Dielectric Filters - Typical examples

T-CERAM Number	Center Frequency Fo (MHz)	Rejection Band *1 (MHz)	Rejection (dB)	Pass Band *2 From ... To (MHz)	Insertion Loss in PB (dB)	Return Loss in PB (dB)	No. of poles
TDF-BR-4-0429-04	429	4	55	417 - 421	1.4	14	4
TDF-BR-2-0433-01	433.1	0.1	8	434 - 434.2	1.4	15	2
TDF-BR-2-0434-01	434.1	0.1	8	433 - 433.2	1.4	15	2
TDF-BR-3-0869-01	869.5	0.6	20	DC - 860 880 - 2300	0.8	15 (12)	3
TDF-BR-4-0902-40	902	42	25	936 - 962	1.4	15	4
TDF-BR-3-0929-01	929	1	15	DC - 920 938 - 2300	0.8	15 (12)	3
TDF-BR-3-1227-01	1227	1	20	DC - 1220 1240 - 2300	1 (1.5)	14 (10)	3
TDF-BR-3-1484-08	1484	8	40	DC - 1400	0.5	15	3
TDF-BR-3-1577-34	1577	34	20	DC - 1500 1640 - 2300	1.3	12 (10)	3
TDF-BR-2-3631-08	3631	8	4	DC - 3623 3639 - 3800	0.5	12	2
1 The frequency band with guaranteed rejection 2 The frequency band(s) with guaranteed Insertion Loss and Return Loss					IL = Insertion Loss (in dB) RL = Returnn Loss (in dB) PB = Pass Band

Dielectric diplexers - Typical examples

Dielectric duplexer

TDD-BR-4-0462-1-10-T460

2 x 4 pole
F = 457/467 MHz
BW = 1 MHz
Channel spacing = 10 MHz
Insertion loss < 1.4 dB
Rejection > 75 dB
Return loss > 20 dB

Dielectric duplexer

TDD-BR-4-0925-25-45-C393

2 x 4 pole
F = 903/948 MHz
BW = 25 MHz
Channel spacing = 45 MHz
Insertion loss < 2.3 dB
Rejection > 40 dB
Return loss > 15 dB

Dielectric diplexer

TDD-BP-3-1933-35-80-C220

2 x 3 pole
F = 1893/1973 MHz
BW = 35 MHz
Channel spacing = 80 MHz
Insertion loss < 2.2 dB
Rejection > 30 dB
Return loss > 15 dB