GB1400071A - Directional couplers - Google Patents
Directional couplersInfo
- Publication number
- GB1400071A GB1400071A GB2872772A GB2872772A GB1400071A GB 1400071 A GB1400071 A GB 1400071A GB 2872772 A GB2872772 A GB 2872772A GB 2872772 A GB2872772 A GB 2872772A GB 1400071 A GB1400071 A GB 1400071A
- Authority
- GB
- United Kingdom
- Prior art keywords
- path
- wave energy
- components
- incident
- directed along
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/19—Conjugate devices, i.e. devices having at least one port decoupled from one other port of the junction type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
Abstract
1400071 Polarizing devices WESTERN ELECTRIC CO Inc 20 June 1972 [21 June 1971] 28727/72 Heading G2J [Also in Divisions H1 and H4] A directional coupler comprises at least three dielectric material layers whose thicknesses and dielectric constants are such thaf wave energy of a predetermined frequency which is incident at a predetermined angle is split into transmitted and reflected components in proportions which are substantially independent of the kind of polarization of said wave energy. As described, a device 11 has three layers 12, 13, 14 of respective thicknesses d 1 , d 2 , and d 1 and dielectric constants # 1 , # 2 , # 1 . Wave energy propagating in the plane of the figure is directed along a path 15, and is incident at an angle # i . It has electric field components E 1 , E 2 respectively polarized parallel to, and perpendicular to the plane of propagation. Resultant corresponding transmitted components E 1t , E 2t are directed along a path 17 which is parallel to the path 15, and resultant corresponding reflected components E 1r , E 2r are directed along a path 18, which is at an angle 2# i to the path 15. It is arranged that at a frequency corresponding to a free space wavelength of # o , by making, where, k is an odd integer R is the relative proportion of incident wave energy to be reflected In a device for operation at 100 GHz
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15499571A | 1971-06-21 | 1971-06-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1400071A true GB1400071A (en) | 1975-07-16 |
Family
ID=22553711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2872772A Expired GB1400071A (en) | 1971-06-21 | 1972-06-20 | Directional couplers |
Country Status (6)
Country | Link |
---|---|
US (1) | US3741625A (en) |
BE (1) | BE785084A (en) |
CA (1) | CA930040A (en) |
DE (1) | DE2229669A1 (en) |
FR (1) | FR2143067A1 (en) |
GB (1) | GB1400071A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5063391A (en) * | 1989-06-06 | 1991-11-05 | The Trustees Of The University Of Penn. | Method of measuring chiral parameters of a chiral material |
US5948718A (en) * | 1991-04-19 | 1999-09-07 | Murata Manufacturing Co., Ltd. | Dielectric ceramic polarizer |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4034315A (en) * | 1975-03-08 | 1977-07-05 | Licentia Patent-Verwaltungs-G.M.B.H. | Waveguide directional coupler |
US4662722A (en) * | 1985-05-23 | 1987-05-05 | Ford Aerospace & Communications Corp. | Polarization insensitive mirror |
GB2256725B (en) * | 1991-06-10 | 1995-01-18 | Alps Electric Co Ltd | Polarising light separation element and light receiving optical device using same |
US5400179A (en) * | 1992-02-18 | 1995-03-21 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical multilayer thin film and beam splitter |
WO1994000782A1 (en) * | 1992-06-19 | 1994-01-06 | Fujitsu Limited | Photocoupler |
US5644428A (en) * | 1993-03-03 | 1997-07-01 | International Business Machines Corporation | Continuously variable beam splitter |
US5304960A (en) * | 1993-04-01 | 1994-04-19 | Satyendranath Das | Ferroelectric total internal reflection RF switch |
EP1223456B1 (en) * | 2001-12-14 | 2003-12-03 | Agilent Technologies, Inc. (a Delaware corporation) | Low polarisation dependent loss beam splitter |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB735901A (en) * | 1953-02-06 | 1955-08-31 | Marconi Wireless Telegraph Co | Improvements in or relating to hybrid junction arrangements for use on micro radio waves |
GB944930A (en) * | 1953-05-04 | 1963-12-18 | Secr Aviation | Improvements in or relating to electromagnetic wave apparatus |
US3436143A (en) * | 1965-11-30 | 1969-04-01 | Bell Telephone Labor Inc | Grid type magic tee |
US3559090A (en) * | 1968-10-08 | 1971-01-26 | Bausch & Lomb | Polarization free beam divider |
US3579148A (en) * | 1969-04-10 | 1971-05-18 | Gen Electric | Directional coupler for oversize circular waveguides |
-
1971
- 1971-06-21 US US00154995A patent/US3741625A/en not_active Expired - Lifetime
- 1971-12-29 CA CA131267A patent/CA930040A/en not_active Expired
-
1972
- 1972-06-19 BE BE785084A patent/BE785084A/en unknown
- 1972-06-19 DE DE19722229669 patent/DE2229669A1/en active Pending
- 1972-06-19 FR FR7222009A patent/FR2143067A1/fr not_active Withdrawn
- 1972-06-20 GB GB2872772A patent/GB1400071A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5063391A (en) * | 1989-06-06 | 1991-11-05 | The Trustees Of The University Of Penn. | Method of measuring chiral parameters of a chiral material |
US5948718A (en) * | 1991-04-19 | 1999-09-07 | Murata Manufacturing Co., Ltd. | Dielectric ceramic polarizer |
Also Published As
Publication number | Publication date |
---|---|
DE2229669A1 (en) | 1972-12-28 |
CA930040A (en) | 1973-07-10 |
BE785084A (en) | 1972-10-16 |
US3741625A (en) | 1973-06-26 |
FR2143067A1 (en) | 1973-02-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |