Self-biased Receiver System
1. The system can be operated by DC power converted from the rectenna, giving it a very long operational lifetime 2. The system can be efficiency designed for a compact rectenna and an RF receiver without bandpass filters 3. The multi-function use of a single antenna reduces the overall size and complexity of the entire system 4. The receiver is based on the self-heterodyne scheme, which eliminates a power-hungry oscillator 5. Separate circuits for RF and DC power generation are no longer needed, as both functions are integrated into a single circuit structure
1. Low power, short-range wireless sensors, such as: a. RF Tags b. Security access systems
This innovation is the first rectenna technology proposed for small-scale personal use. The device receives a microwave or RF signal sent by a transmitter and the received power is delivered to a microwave or RF receiver and also to a rectenna. The receiver recovers the transmitted data or voice signals while the rectenna generates DC power to be supplied to the receiver. This reduces the demand on the DC power supply, which results in longer battery life.
Patent Number: US7853223B2
Application Number: US2006442267A
Inventor: Han, Sang-min | Park, Ji-yong | Itoh, Tatsuo
Priority Date: 24 Oct 2005
Priority Number: US7853223B2
Application Date: 30 May 2006
Publication Date: 14 Dec 2010
IPC Current: H04B000106 | H04B000700 | H04M000100
US Class: 455130 | 343702 | 455269 | 4555757 | 343402
Assignee Applicant: Samsung Electronics Co. Ltd.,Suwon-si | The Regents of the University of California
Title: Self-biased receiver system using a multi-fed antenna
Usefulness: Self-biased receiver system using a multi-fed antenna
Summary: For use in small-sized device.
Novelty: Receiver system for use in small-sized device, comprises first port(s) connected to electronic circuit, and second port connected to feeder feeding direct current voltage to electronic circuit
电子
电路设计
7853223
State of Development A prototype system has been designed, implemented, and verified. The system is efficiently integrated together with a dual-fed circular sector antenna. The receiver has been designed using a low-noise amplified (LNA) with low power consumption and a self-heterodyne mixer. The rectenna achieves high conversion efficiency up to 80% as a result of the harmonic rejection of the circular sector antenna. The rectified DC power from the rectenna is applied for a bias of the LNA without any external bias. Simultaneously an ASK digital signal demodulator without extra power supply has been implemented successfully. Background Conventional rectenna systems have been developed for large power reception and efficient power conversion. Applications of this technology are typically large power transfer systems, which require a large-scale array. Additional Technologies by these Inventors Tech ID/UC Case 20492/2005-682-0 Related Cases 2005-682-0
美国
