Three port junction receiver

US6507733B1 · kind B1 · utility

Assignee

• Sony International (Europe) GmbH · DE

Inventors

• Dragan Krupezevic · Stuttgart, DE
• Veselin Brankovic · Eßlingen, DE
• Masayoshi Abe · Tokyo, JP
• Tino Konschak · Stuttgart, DE
• Thomas Dölle · Chemnitz, DE

Key dates

• Filing date: Dec 15, 1999
• Grant date: Jan 14, 2003
• Expiry date: Dec 15, 2019

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L27/38
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

The present invention proposes a direct receiver technique based on one power measurement and time multiplexing of input signals. The proposed technique allows I/Q demodulation. The proposed technique bases on the passive linear three-port high frequency circuitry (1) having two RF signal input (2, 5) and one output port (3) attached to a power sensor (4). The signals output from the power sensor (4) is low pass filtered (17) and supplied to a DC interface. The proposed linear three-port circuitry (1) contains at least one RF switch and at least one passive circuit having at least one phase shifter functionality.