Root Raised Cosine Filters

KR Electronics has designed and manufactured many root cosine filters. The following are typical specifications and a list of a few of filters previously designed.

To specify a customized filter, specify:
Type (Root or full cosine), Fs (symbol rate 1 KHz to 100 MHz) and Alpha (rolloff factor typical range 0.30 to 0.50)

wpe3C.jpg (8718 bytes)

KR 2388 typical response plots

Typical Specifications
Filter Type	Root Cosine
Fs	40 MHZ
Alpha	0.35
SIN(X)/X Correction	Yes
Insertion Loss	< 5 dB
Deviation from Ideal to 26.1 MHz	<ą0.50dB (<ą0.2 dB typ)
Deviation from Linear Phase to 23.7 MHz	<ą2.5° (<ą 1° typ)
Phase Match in Pairs to 22.5 MHz	<ą2.5° (<ą1° typ)
Ultimate Stopband Loss	> 38 dB
Source and Load	50 Ohms
Connectors	BNC

Choose a current design or send your own specifications

Previously Designed
Fs MHz	Alpha	Sin(x)/x	Part Number
0.53	0.35	yes	2323
0.87	0.35	yes	2324
1.00	0.30	yes	2358
1.44	0.35	yes	2325
1.90	0.35	yes	2326
2.00	0.35	no	2388
2.00	0.30	yes	2207
2.00	0.35	yes	2227
2.20	0.35	yes	2327
2.90	0.35	yes	2328
3.80	0.35	yes	2329
4.00	0.30	yes	2208
5.00	0.35	yes	2228
7.30	0.35	yes	2330
8.00	0.30	yes	2209
10.0	0.35	yes	2229
14.0	0.30	yes	2220
17.8	0.35	yes	2331
20.0	0.20	yes	2215
20.0	0.35	no	2192
20.0	0.35	yes	2193
21.3	0.35	no	2188
21.3	0.35	yes	2188-S
25.0	0.30	yes	2199
27.5	0.35	yes	2226
30.0	0.35	yes	2230
35.0	0.30	yes	2200
40.0	0.35	yes	2231
50.0	0.30	yes	2221
75.0	0.30	yes	2361
75.0	0.30	no	2362