US 12,407,414 B2
Distributed array for direction and frequency finding
Janusz Murakowski, Bear, DE (US); Christopher Schuetz, Avondale, PA (US); Garrett Schneider, New Castle, DE (US); and Shouyuan Shi, Newark, DE (US)
Assigned to Phase Sensitive Innovations, Inc., Newark, DE (US)
Filed by PHASE SENSITIVE INNOVATIONS, INC., Newark, DE (US)
Filed on Oct. 24, 2023, as Appl. No. 18/383,365.
Application 16/430,877 is a division of application No. 15/956,545, filed on Apr. 18, 2018, granted, now 10,313,012, issued on Jun. 4, 2019.
Application 18/383,365 is a continuation of application No. 17/151,565, filed on Jan. 18, 2021, granted, now 11,838,050.
Application 17/151,565 is a continuation of application No. 16/430,877, filed on Jun. 4, 2019, granted, now 10,897,309, issued on Jan. 19, 2021.
Application 15/956,545 is a continuation in part of application No. 15/227,859, filed on Aug. 3, 2016, granted, now 10,009,098, issued on Jun. 26, 2018.
Claims priority of provisional application 62/486,474, filed on Apr. 18, 2017.
Claims priority of provisional application 62/200,626, filed on Aug. 3, 2015.
Prior Publication US 2024/0056186 A1, Feb. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 10/2575 (2013.01); H04B 10/00 (2013.01); H04B 10/69 (2013.01)
CPC H04B 10/2575 (2013.01) [H04B 10/00 (2013.01); H04B 10/69 (2013.01); H04B 2210/006 (2013.01)] 45 Claims
OG exemplary drawing
 
1. A receiver system comprising:
a plurality of antennas, the plurality of antennas grouped into a first antenna array and a second antenna array;
a plurality of electro-optic modulators each connected to a corresponding one of the plurality of antennas to upconvert an RF electrical signal provided by the corresponding plurality of antennas to the optical domain and output first modulated optical signals corresponding to the first antenna array and second modulated optical signals corresponding to the second antenna array;
a plurality of first optical waveguides operatively connected through corresponding ones of the electro-optic modulators to the first antenna array, the first optical waveguides terminating at an interference space to provide first optical signal interference amongst the first modulated optical signals;
a plurality of second optical waveguides operatively connected through corresponding ones of the electro-optic modulators to the second antenna array, the second optical waveguides terminating at the interference space to provide second optical signal interference amongst the second modulated optical signals; and
an image plane at the interference space for receiving the first optical signal interference of the first modulated optical signals and the second optical signal interference of the second modulated optical signals,
wherein the first antenna array, the first optical waveguides, and the interference space form a first imaging receiver having a first achromatic axis, and
wherein the second antenna array, the second optical waveguides, and the interference space form a second imaging receiver having a second achromatic axis that is different from the first achromatic axis.