High frequency mixer
AssigneeMitsubishi Electric Corporation
InventorMasaomi Tsuru
Life of this patent
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Abstract
A first phase shift circuit (2) converts impedance to achieve impedance matching between a third terminal (1c) of a 90-degree hybrid circuit (1) and a first terminal (4a) of a first nonlinear element (4), and shifts a phase of a radio wave by 180 degrees, and a second phase shift circuit (3) converts impedance to achieve impedance matching between a fourth terminal (1d) of the 90-degree hybrid circuit (1) and a first terminal (5a) of a second nonlinear element (5), and shifts a phase of a radio wave by 90 degrees. As a result of this configuration, a conversion loss of radio waves can be reduced.
Claims10
A high frequency mixer comprising:
- a 90-degree hybrid circuit including a first terminal, a second terminal, a third terminal and a fourth terminal, the second terminal being an isolation terminal, the third terminal being a 0-degree output terminal, and the fourth terminal being a −90-degree output terminal when the first terminal is an input terminal for a radio wave;
- a first phase shift circuit converting impedance to achieve impedance matching between the third terminal of the 90-degree hybrid circuit and a first terminal of a first nonlinear element, and shifting a phase of the radio wave by 180 degrees;
- and
- a second phase shift circuit converting impedance to achieve impedance matching between the fourth terminal of the 90-degree hybrid circuit and a second terminal of a second nonlinear element, and shifting a phase of the radio wave by 90 degrees.
Dependencies are inferred from the claim text.