Method and system for transmitting signals with reduced spurious emissions
First Claim
Patent Images
1. In a method of transmitting a signal based on a received analog input signal wherein the input signal is amplified for transmission via an antenna, the improvement comprising subdividing the input signal into a plurality of sub-bands, up-converting and amplifying each sub-band, and then combining the amplified sub-bands for transmission via the antenna.
2 Assignments
0 Petitions
Accused Products
Abstract
An RF power amplifier architecture minimizes spurious emissions by breaking the transmitted signal into narrow spectrum sub-bands, amplifying each separately, and then combining the signals for transmission purposes.
33 Citations
17 Claims
- 1. In a method of transmitting a signal based on a received analog input signal wherein the input signal is amplified for transmission via an antenna, the improvement comprising subdividing the input signal into a plurality of sub-bands, up-converting and amplifying each sub-band, and then combining the amplified sub-bands for transmission via the antenna.
-
9. In a transmitter system, wherein a received analog input signal is transmitted via an antenna using an up-converter and an amplifier, the improvement comprising:
-
a processing module that converts the received analog input signal into a digital signal, parses the digitized signal into a plurality of sub-bands, calibrates the sub-bands, and converts each sub-band into an analog signal;
an up-converter and amplifier for each sub-band, and a combiner to combine each amplified sub-band for transmission via the antenna. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
-
16. A processing module for transmitting an analog input signal comprising:
-
an analog to digital converter for digitizing the analog input signal;
means for subdividing the digitized signal into a plurality of sub-bands and calibrating the sub-bands to account for amplitude and phase differences;
a digital to analog converter for each sub-band, the output of each digital to analog converter adapted for later up-converting, amplification, and combining into one signal for transmission purposes;
a detector adapted to receive a sample of the combined output signal of the amplified sub-bands, and to send the sample to the subdividing means as part of calibrating the sub-bands. - View Dependent Claims (17)
-
Specification