Microwave delay circuit having a bridge-T circuit
US4885562A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1987 |
| Grant date | Dec 5, 1989 |
| Priority date | — |
| Expiry date | Dec 9, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/32
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
According to the invention, the circuit comprises at least one two-port network of the "M-derived" section type and connected as an all-pass filter with a phase law which is a linear function of frequency. The two-port network is made in monolithic technology on gallium arsenide and the plane of its structure includes at least one elementary section, which, between an inlet and an outlet which are situated at a distance apart, is constituted by a spiral connected in parallel with a capacitor of metal-insulator-metal structure, with the mid point of the spiral being connected via another capacitor of metal-insulator metal structure to a ground plane. It is applicable to making transmission lines which are programamble in length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.