Rfic transceiver architecture and method for its use
First Claim
1. A method for efficiently converting a RF into a digital signal, comprising:
- a. receiving a RF signal, b. down-converting said received RF signal to a base-band frequency range to obtain a base-band signal, c. up-converting said base-band signal to a low intermediate frequency range to obtain a low IF signal, and d. converting said low IF signal into a digital signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of converting RF to base-band signals, or base-band to RF signals, using a novel receiver and transmitter architecture, implementable on a RFIC. The method uses a two-stage conversion sequence: RF to base-band followed by base-band to intermediate frequency in the receiver, and an opposite sequence in the transmitter. A preferred embodiment of the architecture uses a double balance quadrature demodulator (208) for the RF to base-band down-conversion, and an image reflect quadrature modulator (230) for the base-band to intermediate frequency conversion. The architecture is further enhanced to perform power saving and dual-band reception and transmission.
-
Citations
29 Claims
-
1. A method for efficiently converting a RF into a digital signal, comprising:
-
a. receiving a RF signal, b. down-converting said received RF signal to a base-band frequency range to obtain a base-band signal, c. up-converting said base-band signal to a low intermediate frequency range to obtain a low IF signal, and d. converting said low IF signal into a digital signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method for efficiently converting a digital signal into a RF signal for RF transmission, comprising:
-
a. generating a digital signal in a low intermediate frequency range b. converting said digital signal into an analog signal to obtain a low IF signal, c. down-converting said low IF signal to a base-band frequency range to obtain a base-band signal, and d. up-converting said base-band signal to a RF signal used for RF transmission. - View Dependent Claims (9, 10, 11)
-
-
12. A receiving system for converting RF into digital signals, comprising:
-
a. a down-converter used to convert an analog RF signal into a base-band signal, and b. an up-converter connected to said down-converter and used to convert said base-band signal into a low intermediate frequency signal which is further processed into a digital signal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A system for converting a digital signal into a RF signal, comprising:
-
a. a down-converter used to convert a low intermediate frequency analog signal obtained from the digital signal into a base-band signal, and b. an up-converter connected to said down-converter and used to convert said low intermediate frequency signal into a RF signal. - View Dependent Claims (22, 23, 24)
-
-
25. An efficient, power saving receiver system for converting an input analog RF signal into a digital signal, comprising:
-
a. a RF plus IF section that generates a low intermediate frequency signal that is further processed into the digital signal, b. a digital section connected to said RF plus IF section to process the digital signal, and c. detector means coupled to sample said low intermediate frequency signal between, said RF plus IF section and said digital section, whereby said detector means enable stand-by (power-save) mode operation by turning on and off the digital part of the system. - View Dependent Claims (26)
-
-
27. A system for reception and transmission of RF signals belonging to either a RF low frequency band or a RF high frequency band, comprising:
-
i. a receiver for converting either the low frequency band or the high frequency band RF signals to base-band or intermediate frequency, wherein the conversion of the high band RF signals is obtained by standard down-conversion, and wherein the conversion of the low band RF signals is obtained by first up-converting them into outcome high band RF signals, and then down-converting said outcome high band RF signals, and ii. a transmitter for converting base-band or intermediate frequency signals into either low band or high band RF signals for RF transmission, wherein said conversion to the high band RF signals is performed by standard up-conversion, and wherein said conversion to the low band RF signals is obtained by first up-converting said base-band or intermediate frequency signals to obtain outcome high band RF signals, and then down-converting said high band outcome RF signals. - View Dependent Claims (28, 29)
-
Specification