Wireless Transceiver for Transmitting Circularly-Polarized Signals with Modulated Angular Speed

• US 20180109404A1
• Filed: 09/28/2017
• Published: 04/19/2018
• Est. Priority Date: 10/13/2016
• Status: Active Grant

• Current Assignee: Movandi Corporation
• Original Assignee: Movandi Corporation
• Inventors: Yoon, Seunghwan, Besoli, Alfred Grau, Rofougaran, Ahmadreza, Shirinfar, Farid, Rofougaran, Maryam, Gharavi, Sam, Boers, Michael
• Granted Patent: US 10,122,404 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 1/40 Circuits

Abstract

A radio frequency (RF) front end chip in a phased array antenna panel for transmitting a modulated circularly-polarized signal is disclosed. The RF front end chip includes an oscillator providing an angular speed modulation signal to a quadrature generation block, the quadrature generation block providing an in-phase signal and a quadrature signal based on the angular speed modulation signal, a first amplifier receiving the in-phase signal and a data signal, and providing a modulated horizontally-polarized signal, and a second amplifier receiving the quadrature signal and the data signal, and providing a modulated vertically-polarized signal, where a modulated circularly-polarized signal is generated based on the modulated horizontally-polarized signal and the modulated vertically-polarized signal. The angular speed modulation signal controls an angular speed of the modulated circularly-polarized signal. The data signal is encoded by the angular speed modulation signal.

Claims

1-20. -20. (canceled)

21. A wireless transmitter using a phased array antenna panel for transmitting wireless signals comprising:

a plurality of radio frequency (RF) front end chips each coupled to a group of antennas;

at least one of said RF front end chips receiving a data signal from a master chip, and being configured to combine said data signal with an angular speed modulation signal to provide a modulated horizontally-polarized signal and a modulated vertically-polarized signal;

a modulated circularly-polarized signal that is generated based on said modulated horizontally-polarized signal and said modulated vertically-polarized signal for transmission by at least one antenna in said group of antennas.

22. The wireless transmitter of claim 21 wherein said angular speed modulation signal controls an angular speed of said modulated circularly-polarized signal.

23. The wireless transmitter of claim 21 wherein said at least one of said RF front end chips comprises an oscillator providing said angular speed modulation signal to a quadrature generation block.

24. The wireless transmitter of claim 23 wherein said quadrature generation block provides an in-phase signal and a quadrature signal based on said angular speed modulation signal.

25. The wireless transmitter of claim 21 wherein said at least one of said RF front end chips comprises a first amplifier receiving an in-phase signal and said data signal, and providing said modulated horizontally-polarized signal to said at least one antenna in said group of antennas.

26. The wireless transmitter of claim 25 wherein said RF front end chip comprises a second amplifier receiving a quadrature signal and said data signal, and providing said modulated vertically-polarized signal to said at least one antenna in said group of antennas.

27. The wireless transmitter of claim 21 wherein said data signal is encoded by said angular speed modulation signal.

28. The wireless transmitter of claim 21 wherein said angular speed modulation signal controls an angular speed of said modulated circularly-polarized signal.

29. The wireless transmitter of claim 21 wherein said RF front end chip comprises an oscillator configured to vary said angular speed of said modulated circularly-polarized signal.

30. The wireless transmitter of claim 29 wherein said oscillator is a voltage controlled oscillator.

31. The wireless transmitter of claim 21 wherein said modulated circularly-polarized signal is a right-handed modulated circularly-polarized signal or a left-handed modulated circularly-polarized signal.

32. The wireless transmitter of claim 21 wherein said master chip is integrated in said phased array antenna panel.

33. A wireless transmitter using a phased array antenna panel for transmitting wireless signals comprising:

a radio frequency (RF) front end chip coupled to an antenna in said phased array antenna panel;

said RF front end chip comprising an oscillator providing an angular speed modulation signal to a quadrature generation block;

said RF front end chip receiving a data signal from a master chip, and being configured to combine said data signal with said angular speed modulation signal to provide a modulated polarized signal for transmission by said antenna in said phased array antenna panel.

34. The wireless transmitter of claim 33 wherein said quadrature generation block provides an in-phase signal and a quadrature signal based on said angular speed modulation signal.

35. The wireless transmitter of claim 33 wherein said data signal is encoded by said angular speed modulation signal.

36. The wireless transmitter of claim 33 wherein said angular speed modulation signal controls an angular speed of said modulated polarized signal.

37. The wireless transmitter of claim 33 wherein said oscillator is a voltage controlled oscillator.

38. The wireless transmitter of claim 33 wherein said modulated polarized signal is a right-handed modulated circularly-polarized signal or a left-handed modulated circularly-polarized signal.

39. The wireless transmitter of claim 33 wherein said master chip is integrated in said phased array antenna panel.