Communications device with discriminator for generating intermediate frequency signal and related methods
US8526817B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2012 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | Apr 29, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/25758
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communications device includes a transmitter device having an optical source to generate an optical carrier signal, and a first modulator coupled to the optical source and to modulate the optical carrier signal with a radio frequency (RF) input signal, and an optical waveguide coupled to the transmitter device. The communications device includes a receiver device coupled to the optical waveguide and including a second modulator to further modulate the modulated optical carrier signal with a local oscillator (LO) signal, a frequency modulation-phase modulation (FM-PM) discriminator coupled to the second modulator and to convert the modulated optical carrier signal to an intensity modulated optical carrier signal based upon the LO signal, and an optical-to-electrical converter coupled to the FM-PM discriminator and to generate an intermediate frequency (IF) signal based upon the intensity modulated optical carrier signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.