Invention Grant
US07787851B2 Circuit arrangement with radio-frequency mixer, and receiver arrangement with the circuit arrangement
有权
具有射频混频器的电路布置，以及具有电路布置的接收器布置
- Patent Title: Circuit arrangement with radio-frequency mixer, and receiver arrangement with the circuit arrangement
- Patent Title (中): 具有射频混频器的电路布置，以及具有电路布置的接收器布置
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Application No.: US11067834Application Date: 2005-02-28
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Publication No.: US07787851B2Publication Date: 2010-08-31
- Inventor: Axel Schmidt
- Applicant: Axel Schmidt
- Applicant Address: DE Munich
- Assignee: Infineon Technologies AG
- Current Assignee: Infineon Technologies AG
- Current Assignee Address: DE Munich
- Agency: Eschweiler & Associates, LLC
- Priority: DE10239855 20020829
- Main IPC: H04B1/06
- IPC: H04B1/06 ; H04B7/00
Abstract:
The invention specifies a circuit arrangement with a radio-frequency mixer (4) in which a plurality of preamplifiers (1, 2, 3) in a receiver have a common output node (6). This node is connected to a common, broadband radio-frequency mixer (4) via common coupling capacitances (41, 42). Switching means (17, 18; 27, 28; 37, 38) can be used to connect and disconnect the preamplifiers (1 to 3), which can be associated with various frequency bands, independently of one another. The present principle can be applied in multiband receivers in mobile radio and allows integration using little chip area with good radio-frequency characteristics.
Public/Granted literature
- US20050197088A1 Circuit arrangement with radio-frequency mixer, and receiver arrangement with the circuit arrangement Public/Granted day:2005-09-08
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