Channelized receiver system
US4301454A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 1979 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Nov 30, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/021
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A channelized receiver system for use in conjunction with a scanning antenna wherein a received rf signal is provided to a plurality of filters each of which has a passband corresponding to a portion of a search bandwidth. The filter output signals are processed to provide a signal related to the frequency of the received rf signal for tuning a narrow band, superheterodyne/receiver to the frequency of the received rf signal. More particularly, the received rf signal is divided so that a first portion is applied to a first group of filters, and a second portion applied to a second group of filters. The filters in each group have passbands defining non-contiguous portions of the search bandwidth. The invention also provides a voting logic circuit in which outputs from each of the filters in each filter group are processed to determine which filter in each group has the highest output signal. Circuitry is provided for comparing these output signals to predetermined amplitude and width criteria. If the output signals pass these comparison tests, then the difference between the amplitude of the highest output signal from each of the two filter groups is provided to a computer which then…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.