Invention Grant
- Patent Title: Methods for calibrating radio-frequency receivers using code division multiple access test equipment
- Patent Title (中): 使用码分多址测试设备校准射频接收机的方法
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Application No.: US12732108Application Date: 2010-03-25
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Publication No.: US08718567B2Publication Date: 2014-05-06
- Inventor: Vishwanath Venkataraman , Justin Gregg , Wassim El-Hassan
- Applicant: Vishwanath Venkataraman , Justin Gregg , Wassim El-Hassan
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Treyz Law Group
- Agent G. Victor Treyz; Jennifer Luh
- Main IPC: H04B17/00
- IPC: H04B17/00 ; H03C1/62

Abstract:
Wireless test equipment may be used to perform over-the-air testing of user equipment. The user equipment may contain an antenna and a receiver. The wireless test equipment may contain a call box that performs network-level testing by sending and receiving protocol-compliant network messages. The call box may transmit a radio-frequency test signal at a predetermined power. The antenna in the user equipment may receive the radio-frequency test signal and may provide the received radio-frequency test signal to the input of the receiver. The call box may send a network message such as a code-division-multiple-access intercode handover command to the user equipment to direct the user equipment to measure the received radio-frequency test signal power at the input of the receiver. The measured power may be transmitted to the call box as part of a pilot measurement message indicator, using an intercode handover command, or using other network messages.
Public/Granted literature
- US20110237199A1 METHODS FOR CALIBRATING RADIO-FREQUENCY RECEIVERS USING CODE DIVISION MULTIPLE ACCESS TEST EQUIPMENT Public/Granted day:2011-09-29
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