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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Panasik, C.M. Paxman, W.R. Culver, J.W. |
| Copyright Year | 1988 |
| Description | Author affiliation: Texas Instrum. Inc., Dallas, TX, USA (Panasik, C.M.; Paxman, W.R.; Culver, J.W.) |
| Abstract | A digitally controlled programmable transversal filter (DCPTF) has been developed that uses a 32-tap LiNbO/sub 3/ delay line and two LSI GaAs ICs to digitally control tap weight magnitude and sign. Compared to previously reported PTR devices, this third-generation device is significantly reduced in size and power, yet retains state-of-the-art performance. The device is completely programmable, constrained only by the bandwidth (100 MHz centered at 100 MHz) and the number of taps. The DCPTF is designed in 16-tap blocks to easily expand the number of taps. A calibration method is presented which removes nonideal GaAs FET (field-effect transistor) array gain states due to process variations. The on/off ratio of each individual tap is greater than 35 dB. The DCPTF is demonstrated as a bandpass filter with programmable center frequency and bandwidth. |
| Starting Page | 151 |
| Ending Page | 154 |
| File Size | 269788 |
| Page Count | 4 |
| File Format | |
| DOI | 10.1109/ULTSYM.1988.49359 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1988-10-02 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Digital control Transversal filters Gallium arsenide Bandwidth FETs Delay lines Large scale integration Weight control Calibration Band pass filters |
| Content Type | Text |
| Resource Type | Article |
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