公开(公告)号：US20240396579A1

公开(公告)日：2024-11-28

申请号：US18792306

申请日：2024-08-01

Applicant: Altera Corporation

Inventor： Dan Pritsker ,  Colman Cheung ,  Benjamin Esposito

IPC: H04B1/04 ,  H01Q13/08 ,  H04B7/06 ,  H04L27/20

Abstract: An array of antennas includes transmitter and receiver circuits. The transmitter includes a digital-to-analog converter (DAC), splitter and filter circuits, and mixer circuits. The DAC circuit converts a digital signal into an analog signal. The splitter and filter circuits separate frequencies of the analog signal into split signals. The mixer circuits multiply frequencies from the split signals by different frequencies of carrier signals to generate modulated signals that are converted into radio frequency (RF) signals. The receiver includes mixer circuits, a summing circuit, and an analog-to-digital converter (ADC). RF signals are converted into electrical signals. The mixer circuits multiply frequencies from the electrical signals with different frequencies of carrier signals. The outputs of the mixer circuits are summed by the summing circuit to generate a summed signal that is converted to digital by the ADC.

公开(公告)号：US09112519B1

公开(公告)日：2015-08-18

申请号：US14136642

申请日：2013-12-20

Applicant: ALTERA CORPORATION

Inventor： Zhuan Ye ,  Colman Cheung

IPC: H03M7/00

CPC classification number: H03M7/00 ,  H03H17/0685

Abstract: One embodiment relates to an apparatus for sample rate conversion. A sample rate converter is arranged to receive an input signal at an input sampling frequency and use an interpolation interval to convert the input signal to an output signal at an output sampling frequency. A rate controller is arranged to alternate between different frequency control words for use in generating the interpolation interval signal. Another embodiment relates to a method of sample rate conversion. Another embodiment relates to a rate controller circuit. Other embodiments, aspects, and features are also disclosed.

Abstract translation: 一个实施例涉及用于采样率转换的装置。 采样率转换器被布置为以输入采样频率接收输入信号，并且使用内插间隔将输入信号转换为输出采样频率的输出信号。 速率控制器被布置为在不同的频率控制字之间交替用于生成内插间隔信号。 另一实施例涉及采样率转换的方法。 另一实施例涉及速率控制器电路。 还公开了其它实施例，方面和特征。