Receiver module and mixer thereof
US4072902A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1976 |
| Grant date | Feb 7, 1978 |
| Priority date | — |
| Expiry date | Nov 8, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B2009/126
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A receiver module including a mode launcher, a band pass filter, a local oscillator and a balanced mixer for use in the frequency range 1 GHz to 1,000 GHz, wherein the components are all connected by an insular waveguide transmission line having a conductive image plane, a dielectric waveguide attached to the image plane by a thin film of plastic, the thin film being low loss in character and having a low permittivity compared with that of the dielectric waveguide, the ratio between the thickness of the thin film and the square root of the cross-sectional area of the dielectric waveguide being in the range from about 0.02 to about 1.0.; there also are disclosed signal processing components made of insular waveguide transmission lines including a directional coupler, a symmetrical quadrature hybrid coupler, and a ring resonator filter that can be used as a band rejection or band pass filter either with a single pole or multiple pole, as well as mode launchers for connecting the insular waveguide transmission line to a metal waveguide and a coaxial line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.