Passive mixer, operating method thereof, and devices including the same
AssigneeElectronics and Telecommunications Research Institute
InventorsSunwoo Kong, Bong Hyuk Park, Hui Dong Lee, Seunghyun Jang, Seok Bong Hyun
Life of this patent
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Abstract
A method and apparatus for input matching of a passive mixer are disclosed. The passive mixer includes a differential transistor pair including a first transistor and a second transistor, a first inductor having one end connected to the first transistor and another end connected to a ground, a second inductor having one end connected to the second transistor and another end connected to a ground, and a third inductor having one end for receiving a radio frequency (RF) signal and another end connected to a ground.
Claims20
A passive mixer, comprising:
- a differential transistor pair comprising a first transistor and a second transistor;
- a first inductor having one end connected to the first transistor and another end connected to a ground;
- a second inductor having one end connected to the second transistor and another end connected to the ground;
- and
- a third inductor having one end for receiving a radio frequency (RF) signal and another end connected to the ground.
A passive mixer, comprising:
- a differential transistor pair;
- a ground node connected to a ground;
- an inductor having one end connected to an input terminal and another end connected to the ground node for receiving a radio frequency (RF) signal;
- and
- an additional inductor being magnetically coupled to the inductor such that a transformer is formed and having one end connected to at least one transistor of the differential transistor pair and another end connected to the ground node.
A transceiver for transmitting and receiving a radio frequency (RF) signal, comprising:
- a local oscillator configured to generate a local oscillation signal;
- and
- a passive mixer configured to frequency down convert the RF signal in response to the local oscillation signal,
- wherein the passive mixer comprises:
- a differential transistor pair comprising a first transistor and a second transistor;
- a first inductor having one end connected to the first transistor and another end connected to a ground;
- a second inductor having one end connected to the second transistor and another end connected to the ground;
- and
- a third inductor having one end for receiving the RF signal and another end connected to the ground.
Dependencies are inferred from the claim text.