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John F Iannuzzi: Stepped sine wave frequency response measurement system. Mark D Simpson, Synnestvedt & Lechner, April 11, 2006: US07027940 (10 worldwide citation)

A low cost, low power and lightweight swept sine wave analysis system that is affordable to engineers, university laboratories and students, providing accurate magnitude and phase response measurements over a wide bandwidth is described. An analog mixer mixes a local oscillator signal with an amplif ...


2
John F Iannuzzi: Stepped sine wave frequency response measurement system. Synnestvedt & Lechner, February 19, 2004: US20040034486-A1 (1 worldwide citation)

A low cost, low power and lightweight swept sine wave analysis system that is affordable to engineers, university laboratories and students, providing accurate magnitude and phase response measurements over a wide bandwidth is described. An analog mixer mixes a local oscillator signal with an amplif ...


3
Iannuzzi John F: Stepped sine wave frequency response measurement system. Iannuzzi John F, SIMPSON Mark D, February 19, 2004: WO/2004/015431 (1 worldwide citation)

A low cost, low power and lightweight swept sine wave analysis system that is affordable to engineers, university laboratories and students, providing accurate magnitude and phase response measurements over a wide bandwidth is described. An analog mixer (12, 16) mixes a local oscillator signal (41) ...