Global Patent Index - EP 0459571 A1

EP 0459571 A1 19911204 - Microstrip slow wave transmission line and circuit including such a line.

Title (en)

Microstrip slow wave transmission line and circuit including such a line.

Title (de)

Langsam-Wellen-Mikrostreifenübertragungsleitung und Anordnung mit einer solchen Leitung.

Title (fr)

Ligne de transmission en mode à ondes lentes, du type microruban et circuit incluant une telle ligne.

Publication

EP 0459571 A1 19911204 (FR)

Application

EP 91201234 A 19910524

Priority

  • FR 9006626 A 19900529
  • FR 9008598 A 19900706
  • FR 9102813 A 19910308

Abstract (en)

Wave transmission line, in slow wave mode, of the so-called microstrip type, including a first so-called lower conductive layer (11) acting as earth plane, a second so-called upper conductive layer (12) in the form of a strip with specific longitudinal and transverse dimensions, and a third non-conductive material (1, 2) arranged between these two conductive layers. This transmission lines has, longitudinally, a periodic structure, each period, of length l, being formed of a so-called bridge (4) followed by a so-called pillar (13). Each bridge consists of a segment of the upper conductive strip (12), of length l1 < l, arranged at the surface of a so-called first part (1) of the third material, which part is dielectric in nature. Moreover each pillar (13) is a capacitance which can be an active or passive element. Furthermore, the first conductive layer (11) can be provided with recesses (5) beneath each bridge. A directional coupler (50) can be produced by means of such slow wave lines, and used to produce an integrated transceiver device with single antenna. Application: monolithic microwave integrated circuits. <IMAGE>

IPC 1-7

H01P 1/185; H01P 3/08; H01P 5/08; H01P 9/00; H04B 1/52

IPC 8 full level

H01P 1/185 (2006.01); H01P 3/08 (2006.01); H01P 5/08 (2006.01); H01P 5/18 (2006.01); H01P 9/00 (2006.01)

CPC (source: EP US)

H01P 1/185 (2013.01 - EP US); H01P 3/081 (2013.01 - EP US); H01P 5/08 (2013.01 - EP US); H01P 9/00 (2013.01 - EP US)

Citation (search report)

  • [X] US 3004229 A 19611010 - STEARNS THOMAS H
  • [X] GB 2042812 A 19800924 - AEI SEMICONDUCTORS LTD
  • [A] GB 2056783 A 19810318 - CISE SPA
  • [A] DE 2818854 A1 19791031 - SIEMENS AG
  • [A] US 4229717 A 19801021 - KRONE KENNETH T, et al
  • [A] IEEE 1985 MICROWAVE AND MILLIMETER-WAVE MONOLITHIC CIRCUITS SYMPOSIUM - DIGEST OF PAPERS, St. Louis, 3-5 juin 1985, pages 15-17, IEEE, New York, US; D. JÄGER: "Nonlinear slow-wave propagation on periodic Schottky coplanar lines"
  • [A] IBM TECHNICAL DISCLOSURE BULLETIN, vol. 8, no. 6, novembre 1965, pages 924-925, New York, US; A.S. FARBER: "Propagating signals across semiconductor wafers"
  • [A] PATENT ABSTRACTS OF JAPAN, vol. 7, no. 49 (E-161)[1194], 25 février 1983; & JP-A-57 197 934 (FUJITSU TEN K.K.) 04-12-1982
  • [XP] ELECTRONICS LETTERS, vol. 26, no. 18, 30 août 1990, pages 1443-1445, Stevenage, Herts, GB; P. GAMMAND et al.: "Slow wave propagation using interconnections for IC technologies"

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0459571 A1 19911204; EP 0459571 B1 19950920; DE 69113116 D1 19951026; DE 69113116 T2 19960418; JP H05500896 A 19930218; US 5369381 A 19941129; WO 9119329 A1 19911212

DOCDB simple family (application)

EP 91201234 A 19910524; DE 69113116 T 19910524; JP 51037791 A 19910527; NL 9100085 W 19910527; US 82090692 A 19920117