Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Reexamination Certificate
2006-10-31
2006-10-31
Le, Lana (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
C455S552100, C455S183100, C455S076000, C331S022000, C331S025000
Reexamination Certificate
active
07130603
ABSTRACT:
Radio equipment enabling radio communication with frequency conversion corresponding to signals of different frequency bands is disclosed. A local oscillator signal generator included in this radio equipment having a first signal generator, a second signal generator, and a frequency synthesizer generating a local oscillator signal. A first signal having first frequency is generated in the first signal generator, and a second signal having second frequency smaller than the first frequency is generated in the second signal generator. These first and second signals are synthesized, and the local oscillator signal either having the frequency derived from adding the second frequency to the first frequency, or having the frequency derived from subtracting the second frequency from the first frequency is generated.
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Behzad Razavi. Challenges in Design of Frequency Synthesizers for Wireless Applications. IEEE 1997 pp. 395-402.
Futamura Kazuhiro
Shimahashi Shinsuke
Katten Muchin & Rosenman LLP
Le Lana
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