| 摘要 |
There are various mobile communication standards such as GSM, EDGE, and W-CDMA. For a GSM or EDGE system, a receiver must be configured to work with an IF signal with a center frequency and bandwidth of 200 KHz. For WCDMA system, the same receiver must be configured to work with an IF signal with a center frequency of 600 KHz to 1000 KHz and band width of 2000 KHz. Accordingly, a configurable frequency IF filter with the capability to operate with multiple standards is provided.
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