GB1100391A - Receivers for directional waves - Google Patents

Receivers for directional waves

Info

Publication number
GB1100391A
GB1100391A GB143265A GB143265A GB1100391A GB 1100391 A GB1100391 A GB 1100391A GB 143265 A GB143265 A GB 143265A GB 143265 A GB143265 A GB 143265A GB 1100391 A GB1100391 A GB 1100391A
Authority
GB
United Kingdom
Prior art keywords
sensitive element
illuminated
prisms
wave
concentrated
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
Application number
GB143265A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB143265A priority Critical patent/GB1100391A/en
Publication of GB1100391A publication Critical patent/GB1100391A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/18—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces
    • H01Q19/19—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface

Abstract

1,100,391. Photo-electric arrangements. P. MALIFAUD. Jan. 12, 1965, No. 1432/65. Heading G1A. [Also in Divisions G2 and H4] A directional wave-energy receiver comprises a thin flat sensitive element or transducer and two wave-energy directing means (one at least of which is provided with a reflective member) each for concentrating part of the incident wave energy upon a respective one of two opposite flat sides of the said sensitive element. The said two directing means provide a common axis along which the wave energy is focused to a plane in which the sensitive element is disposed. In a bolometer, Fig. 2, a thermistor 13 is held between two totally reflecting germanium prisms 7, 8, with thin selenium films 16, 17 interposed. The front faces of the prisms are curved spherically or elliptically so that incident radiation is focused upon the upper and lower surfaces, respectively, of the thermistor. In a second embodiment, Fig. 3 (not shown) two photographic objectives (18), (19) illuminate the front and rear surfaces, respectively, of a sensitive element (20). Radiation is directed to the objective (19) by a totally-reflecting prism (21) which has coplanar entry and exit windows (22), (23) and three reflecting faces (24), (25), (26) inclined at 120‹ to each other. Bundles of suitably disposed cylindrical fibres may replace prisms in the foregoing embodiments. In a third embodiment, Fig. 1 (not shown) a sensitive element (2) is held between a lens (1), by which its front face is illuminated, and a plano-convex lens (6) with a silvered paraboloidal rear surface (3), by which its rear face is illuminated. In a fourth embodiment, a dipole 27, Fig. 4 is illuminated on one side by radio waves concentrated by a lens 29, and on the other side by radio waves concentrated by a paraboloidal mirror 28. In a fifth embodiment, ultrasonic waves are concentrated by two horns 30, 31, Fig. 5, upon the upper and lower faces, respectively, of a triplet 32 made up of a thin sheet of Piezo-electric crystal 33 clamped between two steel holding members 34, 35.
GB143265A 1965-01-12 1965-01-12 Receivers for directional waves Expired GB1100391A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB143265A GB1100391A (en) 1965-01-12 1965-01-12 Receivers for directional waves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB143265A GB1100391A (en) 1965-01-12 1965-01-12 Receivers for directional waves

Publications (1)

Publication Number Publication Date
GB1100391A true GB1100391A (en) 1968-01-24

Family

ID=9721933

Family Applications (1)

Application Number Title Priority Date Filing Date
GB143265A Expired GB1100391A (en) 1965-01-12 1965-01-12 Receivers for directional waves

Country Status (1)

Country Link
GB (1) GB1100391A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084420A2 (en) * 1982-01-19 1983-07-27 P.A. Consulting Services Limited An antenna, particularly for the reception of satellite communications
GB2331185A (en) * 1983-03-05 1999-05-12 Emi Ltd Antenna arrangement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084420A2 (en) * 1982-01-19 1983-07-27 P.A. Consulting Services Limited An antenna, particularly for the reception of satellite communications
EP0084420A3 (en) * 1982-01-19 1983-08-03 P.A. Consulting Services Limited An antenna, particularly for the reception of satellite communications
GB2331185A (en) * 1983-03-05 1999-05-12 Emi Ltd Antenna arrangement
GB2331185B (en) * 1983-03-05 1999-09-22 Emi Ltd Antenna arrangement

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