Abstract
A new filter topology has been developed for HF preselection. The topology is based upon both input and output IDT frequency tuning in combination with differing IDT synchronous frequencies. In theory, the additional degrees of freedom of this topology allow for an efficient answer to the previous limitations. Broadband center frequency tuning is obtained since the center frequency is no longer limited to a range defined by a fixed input IDT. Improved bandwidth control is obtained through selective overlap of the input and output IDT transfer functions. Aliasing effects are minimized by proper selection of the nominal input and output IDT center frequencies.
| Original language | English |
|---|---|
| Pages (from-to) | 575-579 |
| Number of pages | 5 |
| Journal | Proceedings of the Annual IEEE International Frequency Control Symposium |
| State | Published - 1998 |
| Event | Proceedings of the 1998 IEEE International Frequency Control Symposium - Pasadena, CA, USA Duration: 27 May 1998 → 29 May 1998 |