The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 20, 2020
Filed:
Jan. 18, 2019
Qorvo Us, Inc., Greensboro, NC (US);
Charles Forrest Campbell, Dallas, TX (US);
Qorvo US, Inc., Greensboro, NC (US);
Abstract
An apparatus is disclosed having a circulator having a transmit port, a receive port, and a tuner port with tuner circuitry coupled between the tuner port and an antenna port. At least one analog control branch is coupled between the receive port and at least one control input of the tuner circuitry to generate at least one control signal from a transmit leakage signal leaking into the receive port. The tuner circuitry is configured to respond to the at least one control signal by automatically electronically tuning such that a cancellation signal of substantially equal amplitude and opposite phase of that of the transmit leakage signal is reflected through the tuner port and into the receive port, thereby reducing the transmit leakage signal to a level corresponding to an isolation of at least −30 dB between the transmit port and the receive port.