The IIS Chip Gallery
WTF (2013)
by
| Application | Filter |
| Technology | 130 |
| Manufacturer | SMIC |
| Type | Research |
| Package | QFN40 |
| Dimensions | 1300μm x 1300μm |
| Voltage | 1.2 V |
The name stands for Widely Tunable Filter. Any other connections are purely coincidental. As the name suggests, the chip realizes a tunable baseband filter for a software defined radio. The cutoff frequency can be tuned by more than a factor 300 from 115 kHz up to 40 MHz with a frequency resolution below 3%. This makes the filter suitable for any wireless communication standard with RF signal bandwidths up to 80 MHz, i.e. from GSM to LTE advanced, WiMAX and WLAN.