GB817349A - Circularly polarised microwave lenses - Google Patents
Circularly polarised microwave lensesInfo
- Publication number
- GB817349A GB817349A GB13012/57A GB1301257A GB817349A GB 817349 A GB817349 A GB 817349A GB 13012/57 A GB13012/57 A GB 13012/57A GB 1301257 A GB1301257 A GB 1301257A GB 817349 A GB817349 A GB 817349A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sector
- wave
- face
- plate
- lens
- 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
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
- H01Q15/242—Polarisation converters
- H01Q15/244—Polarisation converters converting a linear polarised wave into a circular polarised wave
Landscapes
- Aerials With Secondary Devices (AREA)
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
817,349. Radio wave-polarizing systems. MARIO, G. R. P. April 24, 1957 [April 24, 1956; March 27, 1957], No. 13012/57. Class 40 (7). The invention relates to a combined lens and polarization changer construction for effecting an interchange between an electromagnetic rectalinearly polarized wave having a given field pattern and a circularly polarized homogeneous plane wave. Particular constructions transforming wave patterns of TE N1 or TM N1 in a circular guide into a free space circularly polarized wave are considered. The construction comprises three parts. Firstly the face of the lens is divided into a number NM sectors; M being so chosen that each sector is of sufficiently small apex angle for the field pattern to be regarded as having a single direction over the whole area and each sector is provided with a phase-shifting plate of a thickness such that a phase lag proportional to the angle between electric vector of the sector surface and a fixed direction of the wave surface. is produced. Secondly, each sector is covered with its own quarter-wave plate arranged so that the angle formed by the axes of the plate is bisected by the direction of the electric field in the sector. Finally a lens is provided on one side of the sector assembly to transform the wave surface in the guide into a plane wave at the assembly. In one embodiment illustrated in Fig. 3, energy of TE o1 mode in a circular guide 1 is changed into a circularly polarized plane wave which is radiated in a given direction at right angles to the axis of the system. The circular guide is coupled to a flared conical horn 2 at the mouth of which is mounted the lens 9 having a plane face 21 and a convex face 7. The lens is shaped to give a plane wave at the face 21 and the face 7 is provided with circular grooves 10 of a quarter wavelength in depth to prevent reflections. The polarization changer immediately above the face 21 is divided into nine sectors of which six can be seen in the Figure. Each section comprises a quater wave plate having rectalinear grooves 20 inclined at 45 degrees to the radius which bisects the sector. The depth p width b and separation a of the grooves are chosen so that the sector functions correctly as a quarter wave plate at the working frequency. Between the quarter wave sector plates and the surface 21 phase-shifting plates 8 are introduced to make the necessary phase corrections. These plates may be of like sector shape and have parallel faces and a uniform thickness of where n is the square root of the dielectric constant of the plate material. No plate of this type is provided in sector 11, one in sector 12, two in sector 13 and so on. The structure is protected by a dielectric cover 22 in which is secured a mirror 23 inclined at 45 degrees to the vertical. This directs the energy radiated outwardly from the axis in a direction determined by the angular positioning of the cover. The Specification includes a full theoretical discussion of the arrangement including an explanation of why the phase-shifting plates are needed. It also describes briefly with reference to Figs. 4 to 7 (none of which are shown), the constructions necessary where the rectalinearly polarized wave is of the TE H mode or the TE 31 mode.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR817349X | 1956-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB817349A true GB817349A (en) | 1959-07-29 |
Family
ID=9268301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13012/57A Expired GB817349A (en) | 1956-04-24 | 1957-04-24 | Circularly polarised microwave lenses |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1081075B (en) |
| GB (1) | GB817349A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014145886A1 (en) * | 2013-03-15 | 2014-09-18 | Keyssa, Inc. | Polarization converting dielectric plate |
| US9197011B2 (en) | 2011-12-14 | 2015-11-24 | Keyssa, Inc. | Connectors providing haptic feedback |
| US9203597B2 (en) | 2012-03-02 | 2015-12-01 | Keyssa, Inc. | Systems and methods for duplex communication |
| US9322904B2 (en) | 2011-06-15 | 2016-04-26 | Keyssa, Inc. | Proximity sensing using EHF signals |
| US9374154B2 (en) | 2012-09-14 | 2016-06-21 | Keyssa, Inc. | Wireless connections with virtual hysteresis |
| US9379450B2 (en) | 2011-03-24 | 2016-06-28 | Keyssa, Inc. | Integrated circuit with electromagnetic communication |
| US9407311B2 (en) | 2011-10-21 | 2016-08-02 | Keyssa, Inc. | Contactless signal splicing using an extremely high frequency (EHF) communication link |
| US9426660B2 (en) | 2013-03-15 | 2016-08-23 | Keyssa, Inc. | EHF secure communication device |
| US9473207B2 (en) | 2013-03-15 | 2016-10-18 | Keyssa, Inc. | Contactless EHF data communication |
| US9515365B2 (en) | 2012-08-10 | 2016-12-06 | Keyssa, Inc. | Dielectric coupling systems for EHF communications |
| US9515859B2 (en) | 2011-05-31 | 2016-12-06 | Keyssa, Inc. | Delta modulated low-power EHF communication link |
| US9531425B2 (en) | 2012-12-17 | 2016-12-27 | Keyssa, Inc. | Modular electronics |
| US9553616B2 (en) | 2013-03-15 | 2017-01-24 | Keyssa, Inc. | Extremely high frequency communication chip |
| US9559790B2 (en) | 2012-01-30 | 2017-01-31 | Keyssa, Inc. | Link emission control |
| US9614590B2 (en) | 2011-05-12 | 2017-04-04 | Keyssa, Inc. | Scalable high-bandwidth connectivity |
| US9705204B2 (en) | 2011-10-20 | 2017-07-11 | Keyssa, Inc. | Low-profile wireless connectors |
| US9787349B2 (en) | 2011-09-15 | 2017-10-10 | Keyssa, Inc. | Wireless communication with dielectric medium |
| US9853696B2 (en) | 2008-12-23 | 2017-12-26 | Keyssa, Inc. | Tightly-coupled near-field communication-link connector-replacement chips |
| US9853746B2 (en) | 2012-01-30 | 2017-12-26 | Keyssa, Inc. | Shielded EHF connector assemblies |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4141013A (en) * | 1976-09-24 | 1979-02-20 | Hughes Aircraft Company | Integrated circularly polarized horn antenna |
| GB2345797B (en) * | 1999-01-15 | 2003-09-03 | Alenia Marconi Systems Ltd | Quarter wave plate |
-
1957
- 1957-04-24 GB GB13012/57A patent/GB817349A/en not_active Expired
- 1957-04-24 DE DEM33976A patent/DE1081075B/en active Pending
Cited By (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9853696B2 (en) | 2008-12-23 | 2017-12-26 | Keyssa, Inc. | Tightly-coupled near-field communication-link connector-replacement chips |
| US10243621B2 (en) | 2008-12-23 | 2019-03-26 | Keyssa, Inc. | Tightly-coupled near-field communication-link connector-replacement chips |
| US10965347B2 (en) | 2008-12-23 | 2021-03-30 | Keyssa, Inc. | Tightly-coupled near-field communication-link connector-replacement chips |
| US9379450B2 (en) | 2011-03-24 | 2016-06-28 | Keyssa, Inc. | Integrated circuit with electromagnetic communication |
| US9444146B2 (en) | 2011-03-24 | 2016-09-13 | Keyssa, Inc. | Integrated circuit with electromagnetic communication |
| US10601105B2 (en) | 2011-05-12 | 2020-03-24 | Keyssa, Inc. | Scalable high-bandwidth connectivity |
| US11923598B2 (en) | 2011-05-12 | 2024-03-05 | Molex, Llc | Scalable high-bandwidth connectivity |
| US9614590B2 (en) | 2011-05-12 | 2017-04-04 | Keyssa, Inc. | Scalable high-bandwidth connectivity |
| US9515859B2 (en) | 2011-05-31 | 2016-12-06 | Keyssa, Inc. | Delta modulated low-power EHF communication link |
| US9322904B2 (en) | 2011-06-15 | 2016-04-26 | Keyssa, Inc. | Proximity sensing using EHF signals |
| US9444523B2 (en) | 2011-06-15 | 2016-09-13 | Keyssa, Inc. | Proximity sensing using EHF signals |
| US9722667B2 (en) | 2011-06-15 | 2017-08-01 | Keyssa, Inc. | Proximity sensing using EHF signals |
| US10707557B2 (en) | 2011-09-15 | 2020-07-07 | Keyssa, Inc. | Wireless communication with dielectric medium |
| US10381713B2 (en) | 2011-09-15 | 2019-08-13 | Keyssa, Inc. | Wireless communications with dielectric medium |
| US10027018B2 (en) | 2011-09-15 | 2018-07-17 | Keyssa, Inc. | Wireless communication with dielectric medium |
| US9787349B2 (en) | 2011-09-15 | 2017-10-10 | Keyssa, Inc. | Wireless communication with dielectric medium |
| US9705204B2 (en) | 2011-10-20 | 2017-07-11 | Keyssa, Inc. | Low-profile wireless connectors |
| US9647715B2 (en) | 2011-10-21 | 2017-05-09 | Keyssa, Inc. | Contactless signal splicing using an extremely high frequency (EHF) communication link |
| US9407311B2 (en) | 2011-10-21 | 2016-08-02 | Keyssa, Inc. | Contactless signal splicing using an extremely high frequency (EHF) communication link |
| US9197011B2 (en) | 2011-12-14 | 2015-11-24 | Keyssa, Inc. | Connectors providing haptic feedback |
| US9559790B2 (en) | 2012-01-30 | 2017-01-31 | Keyssa, Inc. | Link emission control |
| US9853746B2 (en) | 2012-01-30 | 2017-12-26 | Keyssa, Inc. | Shielded EHF connector assemblies |
| US10236936B2 (en) | 2012-01-30 | 2019-03-19 | Keyssa, Inc. | Link emission control |
| US9900054B2 (en) | 2012-01-30 | 2018-02-20 | Keyssa, Inc. | Link emission control |
| US10110324B2 (en) | 2012-01-30 | 2018-10-23 | Keyssa, Inc. | Shielded EHF connector assemblies |
| US9203597B2 (en) | 2012-03-02 | 2015-12-01 | Keyssa, Inc. | Systems and methods for duplex communication |
| US10069183B2 (en) | 2012-08-10 | 2018-09-04 | Keyssa, Inc. | Dielectric coupling systems for EHF communications |
| US9515365B2 (en) | 2012-08-10 | 2016-12-06 | Keyssa, Inc. | Dielectric coupling systems for EHF communications |
| US9515707B2 (en) | 2012-09-14 | 2016-12-06 | Keyssa, Inc. | Wireless connections with virtual hysteresis |
| US10027382B2 (en) | 2012-09-14 | 2018-07-17 | Keyssa, Inc. | Wireless connections with virtual hysteresis |
| US9374154B2 (en) | 2012-09-14 | 2016-06-21 | Keyssa, Inc. | Wireless connections with virtual hysteresis |
| US9531425B2 (en) | 2012-12-17 | 2016-12-27 | Keyssa, Inc. | Modular electronics |
| US10033439B2 (en) | 2012-12-17 | 2018-07-24 | Keyssa, Inc. | Modular electronics |
| US10523278B2 (en) | 2012-12-17 | 2019-12-31 | Keyssa, Inc. | Modular electronics |
| US9960792B2 (en) | 2013-03-15 | 2018-05-01 | Keyssa, Inc. | Extremely high frequency communication chip |
| US9426660B2 (en) | 2013-03-15 | 2016-08-23 | Keyssa, Inc. | EHF secure communication device |
| US9894524B2 (en) | 2013-03-15 | 2018-02-13 | Keyssa, Inc. | EHF secure communication device |
| US9473207B2 (en) | 2013-03-15 | 2016-10-18 | Keyssa, Inc. | Contactless EHF data communication |
| US10602363B2 (en) | 2013-03-15 | 2020-03-24 | Keyssa, Inc. | EHF secure communication device |
| CN105190997A (en) * | 2013-03-15 | 2015-12-23 | 凯萨股份有限公司 | Polarization converting dielectric plate |
| US10925111B2 (en) | 2013-03-15 | 2021-02-16 | Keyssa, Inc. | EHF secure communication device |
| WO2014145886A1 (en) * | 2013-03-15 | 2014-09-18 | Keyssa, Inc. | Polarization converting dielectric plate |
| US9553616B2 (en) | 2013-03-15 | 2017-01-24 | Keyssa, Inc. | Extremely high frequency communication chip |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1081075B (en) | 1960-05-05 |
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