Invention Grant
- Patent Title: Far field RFID reader with blocking
- Patent Title (中): 远场RFID阅读器带阻塞
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Application No.: US12048815Application Date: 2008-03-14
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Publication No.: US08093990B2Publication Date: 2012-01-10
- Inventor: Ahmadreza (Reza) Rofougaran , Maryam Rofougaran
- Applicant: Ahmadreza (Reza) Rofougaran , Maryam Rofougaran
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Garlick Harrison & Markinson
- Agent Jessica W. Smith
- Main IPC: H04Q5/22
- IPC: H04Q5/22 ; H04B1/38 ; H04M1/00 ; H04B1/40 ; H04B7/00 ; H04L5/16 ; G06F17/10 ; G08B13/14 ; G05B19/00 ; G08B26/00

Abstract:
A far field radio frequency identification (RFID) reader includes a baseband processing module, a transmitter section, and a receiver section. The receiver section includes a low noise amplifier module, a down conversion module, and a current mode blocking circuit. The low noise amplifier module amplifies an inbound RF signal to produce an amplified inbound RF signal. The down conversion module converts the amplified inbound RF signal into the inbound baseband signal. The current mode blocking circuit substantial compensates for a blocking current component of the baseband inbound signal and passes, substantially unattenuated, a signal current component of the baseband inbound signal.
Public/Granted literature
- US20080238626A1 FAR FIELD RFID READER WITH BLOCKING Public/Granted day:2008-10-02
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