US 11,852,747 B2
Apparatus and method of eliminating settling time delays in a radar system
Yoram Stettiner, Keren Maharal (IL); Noam Arkind, Givatayim (IL); and Abraham Bauer, Hod Hasharon (IL)
Assigned to Arbe Robotics Ltd.
Appl. No. 17/261,128
Filed by ARBE ROBOTICS LTD., Tel Aviv (IL)
PCT Filed Jun. 29, 2019, PCT No. PCT/IL2019/050720
§ 371(c)(1), (2) Date Jan. 18, 2021,
PCT Pub. No. WO2020/016878, PCT Pub. Date Jan. 23, 2020.
Claims priority of application No. 260695 (IL), filed on Jul. 19, 2018.
Prior Publication US 2021/0293923 A1, Sep. 23, 2021
Int. Cl. G01S 7/40 (2006.01); G01S 13/34 (2006.01); G01S 13/931 (2020.01)
CPC G01S 7/40 (2013.01) [G01S 7/4017 (2013.01); G01S 13/343 (2013.01); G01S 13/931 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of eliminating frequency source settling time in a radar system, the method comprising:
providing a plurality of frequency sources, each frequency source including a local oscillator and phase locked loop (PLL), said plurality of frequency sources including at least a first frequency source having a first required settling time and a second frequency source having a second required settling time;
alternating use of said first frequency source and said second frequency source for transmission and reception in accordance with a local oscillator (LO) control circuit;
permitting said second frequency source to settle while said first frequency source is in use wherein said second frequency source is turned on early enough for it to settle before said first frequency source is turned off, and permitting said first frequency source to settle while said second frequency source is in use wherein said first frequency source is turned on early enough for it to settle before said second frequency source is turned off; and
wherein alternating use of said first frequency source and said second frequency source eliminates time delays associated with frequency source settling time in the radar system.