JPS6447114A - Digital band-pass filter - Google Patents
Digital band-pass filterInfo
- Publication number
- JPS6447114A JPS6447114A JP20380587A JP20380587A JPS6447114A JP S6447114 A JPS6447114 A JP S6447114A JP 20380587 A JP20380587 A JP 20380587A JP 20380587 A JP20380587 A JP 20380587A JP S6447114 A JPS6447114 A JP S6447114A
- Authority
- JP
- Japan
- Prior art keywords
- multiplier
- pass band
- band
- frequency
- feedback
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
PURPOSE:To vary the center frequency of the path band and the pass band width with simple constitution by constituting a band-pass filter by an interleaving circuit, an interpolation circuit, an LPF and a multiplier in combinations. CONSTITUTION:In multiplying a cosine wave with a digital signal by a multiplier 1 and a sine wave by a multiplier 9, the signal pass band frequency is shifted to the base band and a high frequency region is cut off by the LPF. In multiplying a cosine wave by a multiplier 8 and a sinuosity wave by a multiplier 17 with the resulting signal, the input signal frequency is shifted to the original frequency region. In selecting the interleaving at a rate of 1/l, the pass band width is narrowed by 1/l as number of times of feedback is increased once, the calculation quantity is less than n-time that per one feedback even with n-time feedback thereby reducing the calculation time. Thus, the pass band center frequency and the pass band width are changed through simple constitution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20380587A JPS6447114A (en) | 1987-08-17 | 1987-08-17 | Digital band-pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20380587A JPS6447114A (en) | 1987-08-17 | 1987-08-17 | Digital band-pass filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6447114A true JPS6447114A (en) | 1989-02-21 |
Family
ID=16480022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20380587A Pending JPS6447114A (en) | 1987-08-17 | 1987-08-17 | Digital band-pass filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6447114A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03244210A (en) * | 1990-02-22 | 1991-10-31 | Teremateiiku Kokusai Kenkyusho:Kk | Digital filter circuit and transmitter/receiver |
| US9685713B2 (en) | 2012-12-28 | 2017-06-20 | Nec Corporation | Antenna device |
-
1987
- 1987-08-17 JP JP20380587A patent/JPS6447114A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03244210A (en) * | 1990-02-22 | 1991-10-31 | Teremateiiku Kokusai Kenkyusho:Kk | Digital filter circuit and transmitter/receiver |
| US9685713B2 (en) | 2012-12-28 | 2017-06-20 | Nec Corporation | Antenna device |
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