FREQUENCY LOCKED FEEDBACK LOOP FOR WIRELESS COMMUNICATIONS
First Claim
1. A method for providing a frequency locked feedback loop for wireless communications, comprising:
- applying dither modulation from a harmonic modulator to modulated data at a transmit source;
mixing the dither modulation at a dither modulation frequency with the modulated data at a wireless carrier frequency to produce a modulated signal;
filtering and splitting the modulated signal using a bandpass filter to produce a wireless output signal and a feedback signal;
determining a frequency error in the feedback signal as a function of alignment of the wireless carrier frequency to a target frequency in a frequency response of the bandpass filter; and
adjusting the wireless carrier frequency in response to the frequency error to establish a frequency lock between the wireless carrier frequency and the target frequency.
8 Assignments
0 Petitions
Accused Products
Abstract
A method and systems for a frequency locked feedback loop for wireless communications are provided. The method includes applying dither modulation from a harmonic modulator to modulated data at a transmit source, and mixing the dither modulation at a dither modulation frequency with the modulated data at a wireless carrier frequency to produce a modulated signal. The method also includes filtering and splitting the modulated signal using a bandpass filter to produce a wireless output signal and a feedback signal. The method further includes determining a frequency error in the feedback signal as a function of alignment of the wireless carrier frequency to a target frequency in a frequency response of the bandpass filter. The method additionally includes adjusting the wireless carrier frequency in response to the frequency error to establish a frequency lock between the wireless carrier frequency and the target frequency.
-
Citations
20 Claims
-
1. A method for providing a frequency locked feedback loop for wireless communications, comprising:
-
applying dither modulation from a harmonic modulator to modulated data at a transmit source; mixing the dither modulation at a dither modulation frequency with the modulated data at a wireless carrier frequency to produce a modulated signal; filtering and splitting the modulated signal using a bandpass filter to produce a wireless output signal and a feedback signal; determining a frequency error in the feedback signal as a function of alignment of the wireless carrier frequency to a target frequency in a frequency response of the bandpass filter; and adjusting the wireless carrier frequency in response to the frequency error to establish a frequency lock between the wireless carrier frequency and the target frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A system for a frequency locked feedback loop for wireless communications, comprising:
-
a harmonic modulator to produce a dither modulation at a dither modulation frequency; a transmit source configured to mix the dither modulation at the dither modulation frequency with modulated data at a wireless carrier frequency to produce a modulated signal; a bandpass filter and splitter in communication with the transmit source and configured to output a wireless output signal and a feedback signal from the modulated signal; and a frequency adjustment function configured to determine frequency error in the feedback signal as a function of alignment of the wireless carrier frequency to a target frequency in a frequency response of the bandpass filter and command adjustment of the wireless carrier frequency in response to the frequency error to establish a frequency lock between the wireless carrier frequency and the target frequency. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A wireless communication security system, comprising:
a multicore device in communication with a plurality of frequency locked feedback loops, wherein the plurality of frequency locked feedback loops are independently configurable to lock on separate target frequencies and output modulated data on wireless carrier frequencies aligned with the separate target frequencies, and the multicore device is configured to periodically modify the separate target frequencies to provide frequency tunable security for communications over a wireless network. - View Dependent Claims (20)
Specification