US 12,345,798 B2
FMCW radar with elevation scanning
Shawn Rogers, Johns Creek, GA (US); Marc M. Pos, Duvall, WA (US); Darren Goshi, El Segundo, CA (US); and David C. Vacanti, Renton, WA (US)
Assigned to Honeywell International Inc., Charlotte, NC (US)
Filed by Honeywell International Inc., Charlotte, NC (US)
Filed on Feb. 4, 2022, as Appl. No. 17/665,479.
Prior Publication US 2023/0251368 A1, Aug. 10, 2023
Int. Cl. G01S 13/42 (2006.01); G01S 7/03 (2006.01); G01S 7/35 (2006.01); G01S 13/44 (2006.01); G01S 13/34 (2006.01); H01Q 1/32 (2006.01); H01Q 1/52 (2006.01); H01Q 3/36 (2006.01); H01Q 21/08 (2006.01); H01Q 21/28 (2006.01)
CPC G01S 13/426 (2013.01) [G01S 7/032 (2013.01); G01S 7/35 (2013.01); G01S 13/4409 (2013.01); G01S 13/4463 (2013.01); G01S 7/03 (2013.01); G01S 13/34 (2013.01); G01S 13/4481 (2013.01); H01Q 1/3233 (2013.01); H01Q 1/525 (2013.01); H01Q 3/36 (2013.01); H01Q 21/08 (2013.01); H01Q 21/28 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A device comprising:
a frequency modulated continuous wave (FMCW) transmit antenna comprising:
a plurality of transmit antenna elements aligned in a single column;
a first multi-channel control device, comprising a first input terminal configured to receive a transmit signal from a power divider, the first multi-channel control device configured to perform electronic elevation scanning, wherein to perform the electronic elevation scanning, the first multi-channel control device is configured to individually adjust a phase and adjust an amplitude of the transmit signal through each respective channel of the first multi-channel control device, wherein each respective channel of the first multi-channel control device is connected to a respective transmit antenna element of a first group of transmit antenna elements of the plurality of transmit antenna elements; and
a second multi-channel control device, comprising a second input terminal configured to receive the transmit signal from the power divider, the second multi-channel control device configured to perform the electronic elevation scanning, wherein to perform the electronic elevation scanning, the second multi-channel control device is configured to individually adjust the phase and the amplitude of the transmit signal through each respective channel of the second multi-channel control device, wherein each respective channel of the second multi-channel control device is connected to a respective transmit antenna element of a second group of transmit antenna elements of the plurality of transmit antenna elements,
a receive array antenna separate from the transmit antenna, wherein the receive array antenna is configured to receive reflected FMCW transmit signals, wherein the receive array antenna comprises:
a multi-layer circuit board;
a first plurality of receive antenna elements located on a first layer of the multi-layer circuit board aligned in a first column and a second plurality of receive antenna elements located on the first layer of the multi-layer circuit board aligned in a second column;
a third multi-channel control device located on a second layer of the multi-layer circuit board, the third multi-channel control device comprising:
a first receive channel including an input terminal coupled to both a first receive antenna element and a second receive antenna element of the first plurality of receive antenna elements;
a first multi-mode integrated circuit configured to individually adjust the phase and adjust the amplitude of received reflected transmit signals from both the first receive antenna element and the second receive antenna element;
a fourth multi-channel control device and a fifth multi-channel control device located on the second layer of the multi-layer circuit board, wherein each channel of the fourth multi-channel control device is configured to receive reflected transmit signals from a respective pair of receive antenna elements of the second plurality of receive antenna elements, each channel of the fifth multi-channel control device is configured to receive reflected transmit signals from a respective pair of receive antenna elements of the second plurality of receive antenna elements, and each respective pair of receive antenna elements is coupled to only one respective channel of the fourth multi-channel control device and the fifth multi-channel control device; and
an output terminal configured to output a signal comprising the received reflected transmit signals.