Method and apparatus to determine the direction to a transponder in a modulated backscatter communication system
Номер патента: EP1307850A2
Опубликовано: 07-05-2003
Автор(ы): Jeremy Landt
Принадлежит: Transcore Holdings Inc
Опубликовано: 07-05-2003
Автор(ы): Jeremy Landt
Принадлежит: Transcore Holdings Inc
Реферат: Methods and systems for determining the direction to a transponder are disclosed. The methods and systems include transmitting (R) a first signal to an area where communications with a transponder is desired; producing a second signal desired from the first signal; receiving the second signal via a first (R) and second antenna (B) forming a difference signal from the second signal received via the first and second antennas (201); forming a third signal by adding the second signal received via the first antenna and the second signal received via the third antenna; delaying the difference signal; and comparing a fist polarity of the delayed difference signal with a second polarity of the third signal (212).
An animal tag including a transponder casing housed in a cartridge
Номер патента: AU2018203668A1. Автор: John James Steinfort,William John Hendriks,Kurt Edmund SCHNEPF. Владелец: ENDURO TAGS Pty Ltd. Дата публикации: 2018-06-14.