Abstract

A new circuit is proposed that uses an RC-CR filter in a feedback configuration to achieve a wideband precision quadrature phase shift with constant amplitude response. Such a circuit can be used to perform image rejection in a low IF receiver using the Hartley method. Simulation results show that the circuit can achieve an average image rejection ratio of 50 dB over a 16 MHz bandwidth. The feedback loop enables the circuit to maintain high accuracy over process and temperature.

Degree

MS

College and Department

Ira A. Fulton College of Engineering and Technology; Electrical and Computer Engineering

Rights

http://lib.byu.edu/about/copyright/

Date Submitted

2011-06-28

Document Type

Thesis

Handle

http://hdl.lib.byu.edu/1877/etd4524

Keywords

image rejection, quadrature generation, wideband, gain matching, low IF, 802.11a, Hartley method, RC-CR filter, frequency detection

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