US 11,811,151 B2
System of at least two transmitting and/or receiving units connected to a common antenna
Jean-Christophe Bouthinon, Cugnaux (FR); Dawid Durka, Toulouse (FR); and Frederic Lathiere, Toulouse (FR)
Assigned to CONTINENTAL AUTOMOTIVE FRANCE, Toulouse (FR); and CONTINENTAL AUTOMOTIVE GMBH, Hannover (DE)
Appl. No. 16/761,547
Filed by Continental Automotive France, Toulouse (FR); and Continental Automotive GmbH, Hannover (DE)
PCT Filed Nov. 15, 2018, PCT No. PCT/FR2018/052850
§ 371(c)(1), (2) Date May 5, 2020,
PCT Pub. No. WO2019/097168, PCT Pub. Date May 23, 2019.
Claims priority of application No. 1760845 (FR), filed on Nov. 17, 2017.
Prior Publication US 2021/0175605 A1, Jun. 10, 2021
Int. Cl. H01Q 5/50 (2015.01); B60C 23/04 (2006.01); H01Q 5/35 (2015.01); H01Q 7/00 (2006.01); H01Q 5/328 (2015.01); H03H 7/01 (2006.01); H01Q 1/22 (2006.01)
CPC H01Q 5/50 (2015.01) [B60C 23/0452 (2013.01); H01Q 5/328 (2015.01); H01Q 5/35 (2015.01); H01Q 7/00 (2013.01); H03H 7/175 (2013.01); H03H 7/1758 (2013.01); H03H 7/1766 (2013.01); H01Q 1/2241 (2013.01); H03H 2007/013 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A system comprising at least two transmitting and/or receiving units connected to an antenna, the at least two transmitting and/or receiving units including a first unit that transmits and/or receives a voltage signal pulsed at a first frequency and at least one second unit that transmits and/or receives a signal at a second frequency, each of said at least two units being respectively connected to the antenna for the passage of the signal via respective first and second branches, the first branch or the antenna comprising first passive electronics preventing passage of the signal at the second frequency to the first unit while the first passive electronics allow passage of the signal at the first frequency to the antenna and the second branch or the antenna comprising second passive electronics preventing passage of the signal at the first frequency to the second unit while the second passive electronics allow passage of the signal at the second frequency to the antenna, wherein each of said at least two units are individually connected to the antenna respectively by the first branch or the second branch connected to a respective end of the antenna wherein the antenna is a loop antenna connected at each of its ends to the first branch or the second branch, respectively, and wherein the loop antenna has a stub branch internal to the antenna connecting it to a ground, the internal stub branch comprising a passive electronic stub that opens the stub branch for the signal at the lowest frequency of the first and second frequencies and that closes the stub branch for the signal pulsed at the highest frequency of the first and second frequencies,
wherein the internal stub branch is connected to the loop antenna at a distance, which is measured from one of the ends of the loop antenna, which is connected to the highest of the first and second frequencies, the distance being inversely proportional to the highest frequency such that the distance decreases as the highest frequency increases.