Microwave receiver
Patent 4677691 Issued on June 30, 1987. Estimated Expiration Date: 
August 1, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 1, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3514720 Transistor oscillator circuit Switched geometry oscillator Patent #: 4485355 InventorAssigneeApplicationNo. 06/761635 filed on 08/01/1985US Classes:455/318, With specified local oscillator structure or coupling331/117FE, Field-effect transistor active element455/326, With balanced mixer455/330, With nonlinear impedance (e.g., diode)455/332Push-pullExaminersPrimary: Ng, Jin F.Attorney, Agent or FirmInternational ClassesH03D 7/14 (20060101)H03B 5/12 (20060101) H03B 5/08 (20060101) H03B 1/00 (20060101) AbstractA microwave oscillator provides two outputs, of opposite phase, which are directly connected to provide the local oscillator inputs to a balanced mixer. Since no balun is used, very wide-band performance can be obtained. | |
