Radar detection apparatus and method thereof
AssigneeMarvell World Trade Ltd.
InventorsMilind Kopikare, Hui Yao Lin, James Yee, Chuong Vu
Life of this patent
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Abstract
A wireless network device includes a signal receiving module that receives an RF signal, and a signal processing module that includes an automatic gain control (AGC) module and that generates control signals when a gain of the AGC module changes based on the RF signal. The network device includes a control module that selectively measures N time intervals between one of adjacent and non-adjacent control signals, wherein N is an integer greater than 1, and that selectively determines that the RF signal is a radar signal when the N time intervals are substantially equal.
Claims32
A wireless network device comprising:
- a signal receiving module that receives a radio frequency (RF) signal;
- a signal processing module that comprises an automatic gain control (AGC) module, and that generates control signals when a gain of said AGC module changes based on said RF signal;
- and
- a control module that selectively measures N time intervals between one of adjacent and non-adjacent ones of said control signals, wherein N is an integer greater than 1, and that selectively determines that said RF signal is a radar signal when said N time intervals are substantially equal,
- wherein said signal processing module generates one of said control signals when said gain of said AGC module transitions from a first magnitude to a second magnitude that is less than a predetermined value and said first magnitude, and from said second magnitude to a magnitude greater than said predetermined value within a predetermined period.
A method for detecting radar, comprising:
- receiving a radio frequency (RF) signal;
- generating control signals when a gain of an automatic gain control (AGC) module changes based on said RF signal;
- selectively measuring N time intervals between one of adjacent and non-adjacent ones of said control signals, wherein N is an integer greater than 1, and selectively determining that said RF signal is a radar signal when said N time intervals are substantially equal;
- and
- generating one of said control signals when said gain of said AGC module transitions from a first magnitude to a second magnitude that is less than a predetermined value and said first magnitude, and from said second magnitude to a magnitude greater than said predetermined value within a predetermined period.
A wireless network device comprising:
- signal receiving means for receiving a radio frequency (RF) signal;
- signal generating means for generating control signals when a gain of an automatic am control (AGC) module changes based on said RF signal;
- and
- control means for selectively measuring N time intervals between one of adjacent and non-adjacent ones of said control signals, wherein N is an integer greater than 1, and selectively determining that said RF signal is a radar signal when said N time intervals are substantially equal,
- wherein said signal generating means generates one of said control signals when said gain of said AGC module transitions from a first magnitude to a second magnitude that is less than a predetermined value and said first magnitude, and from said second magnitude to a magnitude greater than said predetermined value within a predetermined period.
Dependencies are inferred from the claim text.