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US 7,925,222 B2Granted
Method and system for simultaneous FM transmission and FM reception using a shared antenna and a direct digital frequency synthesizer
AssigneeBroadcom Corporation
InventorsAhmadreza Rofougaran, Maryam Rofougaran
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Abstract
Certain aspects of a method and system for simultaneous FM transmission and FM reception using a shared antenna and a direct digital frequency synthesizer (DDFS) may be disclosed. In a FM transceiver that receives FM signals at a frequency f1 and transmits FM signals at a frequency f2, aspects of the method may include generating via a DDFS, a signal corresponding to a difference between f1 and f2 to enable simultaneous transmission and reception of FM signals via shared antenna.
Claims22
A method for communicating signals, the method comprising:
- in a frequency modulation (FM) transceiver that receives FM signals at a frequency f1 and transmits FM signals at a frequency f2, generating utilizing a direct digital frequency synthesizer (DDFS), a signal corresponding to a difference between f1 and f2 to enable simultaneous transmission of said FM signals and reception of said FM signals.
A system for communicating signals, the system comprising:
- one or more circuits in a frequency modulation (FM) transceiver that are operable to receive FM signals at a frequency f1 and are operable to transmit FM signals at a frequency f2;
- and
- said one or more circuits are operable to generate utilizing a direct digital frequency synthesizer (DDFS), a signal corresponding to a difference between f1 and f2 to enable simultaneous transmission of said FM signals and reception of said FM signals.
Dependencies are inferred from the claim text.