EP0183443A1 — Automobile antenna system

Claim 1

Independent Claim 76 words

A diversity type automobile antenna system comprising a pair of high-frequency pickups mounted on the vehicle body at its locations wherein surface high-frequency currents will be induced with higher densities by radio or other waves, said high-frequency pickups being arranged such that one of them can complement the other high-frequency pickup with respect to sensitivity, and one of said high-frequency pickups.which can receive the radio or other waves more sensitively at that time being automatically selected.

Claim 2

Dependent Claim 76 words

A diversity type automobile antenna system comprising a pair of high-frequency pickups mounted on the vehicle body at its locations wherein surface high-frequency currents will be induced with higher densities by radio or other waves, said high-frequency pickups being arranged such that one of them can complement the other high-frequency pickup with respect to sensitivity, and one of said high-frequency pickups.which can receive the radio or other waves more sensitively at that time being automatically selected.

Claim 3

Dependent Claim 127 words

A diversity type automobile antenna system comprising a first high-frequency pickup mounted on the rearward edge of the rear roof at the rightward or leftward side of the vehicle body and extending parallel to the marginal edge of said rear roof and a second high-frequency pickup mounted on a front pillar of the vehicle body on the same side as said first high-frequency pickup and extending parallel to the length of said front pillar, one of said high-frequency pickups being adapted to be selected such that it can more sensitively receive radio or other waves from surface high-frequency currents which are induced on the vehicle body by the radio or other waves and flow concentrically on the marginal edge of said rear roof and said front pillar.

Claim 4

Dependent Claim 127 words

A diversity type automobile antenna system comprising a first high-frequency pickup mounted on the rearward edge of the rear roof at the rightward or leftward side of the vehicle body and extending parallel to the marginal edge of said rear roof and a second high-frequency pickup mounted on a front pillar of the vehicle body on the same side as said first high-frequency pickup and extending parallel to the length of said front pillar, one of said high-frequency pickups being adapted to be selected such that it can more sensitively receive radio or other waves from surface high-frequency currents which are induced on the vehicle body by the radio or other waves and flow concentrically on the marginal edge of said rear roof and said front pillar.

Claim 5

Dependent Claim 86 words

A diversity type automobile antenna system as defined in claim 2 wherein said first high-frequency pickup is mounted on-the roof panel of the vehicle body and separated from a rear window frame on said roof panel and wherein said first high-frequency pickup includes a loop antenna located in close proximity to the marginal edge of an edge molding mounting retainer and extending parallel to the length thereof, said retainer having a longitudinal dimension substantially equal to the wavelength of radio or other waves to be received.

Claim 6

Dependent Claim 54 words

- . A diversity type automobile antenna system as defined in claim 2 wherein said second high-frequency pickup includes a loop antenna mounted on the pillar and extending parallel to the length thereof, said loop antenna being adapted to electromagnetically detect a magnetic flux formed by the surface high-frequency currents flowing on said pillar.

Claim 7

Dependent Claim 53 words

A diversity type automobile antenna system as defined in claim 2 wherein said second high-frequency pickup includes a detecting electrode disposed in close proximity to said pillar and extending parallel to the length thereof,. said pillar and detecting electrode defining an electrostatic coupling for detecting the surface high-frequency currents flowing on said pillar.

Claim 8

Dependent Claim 115 words

A diversity type automobile antenna system comprising a first high-frequency pickup mounted on the inner edge of the trunk lid of the vehicle body at the center thereof and extending parallel to said inner edge of said trunk lid and a second high-frequency pickup mounted on a front pillar of thevvehicle body and extending parallel to the length of said front pillar, one of said high-frequency pickups being adapted to be selected such that it can more sensitively receive radio or other waves from surface high-frequency currents which are induced on the vehicle body by the radio or other waves and flow concentrically on the marginal edge of said trunk lid and said front pillar.

Claim 9

Dependent Claim 115 words

A diversity type automobile antenna system comprising a first high-frequency pickup mounted on the inner edge of the trunk lid of the vehicle body at the center thereof and extending parallel to said inner edge of said trunk lid and a second high-frequency pickup mounted on a front pillar of thevvehicle body and extending parallel to the length of said front pillar, one of said high-frequency pickups being adapted to be selected such that it can more sensitively receive radio or other waves from surface high-frequency currents which are induced on the vehicle body by the radio or other waves and flow concentrically on the marginal edge of said trunk lid and said front pillar.

Claim 10

Dependent Claim 59 words

A diversity type automobile antenna system as defined in claim 6 wherein said first high-frequency pickup is spaced from the marginal edge of said trunk lid inwardly within a range represented by the following formula: 12 x 10 -.3 c/f (meter) where c is the velocity of light and f is the carrier frequency of radio or other waves.

Claim 11

Dependent Claim 47 words

A diversity type automobile antenna system as defined in claim 6 wherein said second high-frequency pickup includes a loop antenna extending along said front pillar, said loop antenna being adapted to electromagnetically detect a magnetic flux formed by the surface high-frequency currents flowing on said front pillar.

Claim 12

Dependent Claim 59 words

A diversity type automobile antenna system as defined in claim 6 wherein said second high-frequency pickup includes a detecting electrode disposed in close proximity to said front pillar and extending parallel to the length of the same and wherein an electrostatic coupling formed between said front pillar and said detecting electrode is adapted to detect said surface high-frequency currents.

Claim 13

Dependent Claim 96 words

A diversity type automobile antenna system comprising a pair of high-frequency pickups for efficiently detecting surface high-frequency currents induced on the vehicle body by radio or other waves and flowing concentrically on the marginal edge portion of the roof panel of the vehicle body, said high-frequency pickups being mounted on said roof panel adjacent to the marginal edge thereof at different locations and extending parallel to the marginal edge of said roof panel, one of said high-frequency pickups being adapted to be automatically selected such that it can receive the radio or other waves more sensitively.

Claim 14

Dependent Claim 96 words

A diversity type automobile antenna system comprising a pair of high-frequency pickups for efficiently detecting surface high-frequency currents induced on the vehicle body by radio or other waves and flowing concentrically on the marginal edge portion of the roof panel of the vehicle body, said high-frequency pickups being mounted on said roof panel adjacent to the marginal edge thereof at different locations and extending parallel to the marginal edge of said roof panel, one of said high-frequency pickups being adapted to be automatically selected such that it can receive the radio or other waves more sensitively.

Claim 15

Dependent Claim 44 words

A diversity type automobile antenna system as defined in claim 10 wherein-said pair of high-frequency pickups are mounted on the marginal edge of said roof panel adjacent to the rear window glass of the vehicle body and spaced from each other a predetermined distance.

Claim 16

Dependent Claim 57 words

A-diversity type automobile antenna system as defined in claim 10 wherein one of said pair of high-frequency pickups is mounted on the marginal edge of said roof panel adjacent to the rear window glass, the other high-frequency pickup being mounted on the marginal edge of said roof panel adjacent to a windshield glass of the vehicle body.

Claim 17

Dependent Claim 55 words

A diversity type automobile antenna system comprising a pair of high-frequency pickups for efficiently detecting surface high-frequency currents induced on the vehicle body by radio or other waves and flowing on the connections of the vehicle body, one of said high-frequency pickups being automatically selected such that it can receive radio or waves more sensitively.

Claim 18

Dependent Claim 55 words

A diversity type automobile antenna system comprising a pair of high-frequency pickups for efficiently detecting surface high-frequency currents induced on the vehicle body by radio or other waves and flowing on the connections of the vehicle body, one of said high-frequency pickups being automatically selected such that it can receive radio or waves more sensitively.

Claim 19

Dependent Claim 37 words

. A diversity type automobile antenna system as defined in claim 13 wherein said pair of high-frequency pickups are mounted in two front pillars which function as said connections of the vehicle body spaced from each other.

Claim 20

Dependent Claim 36 words

A diversity type automobile antenna system as defined in claim 13 wherein said pair of high-frequency pickups are mounted on two trunk hinges which function as said connections of the vehicle body spaced from each other.

Claim 21

Dependent Claim 100 words

A_diversity type automobile antenna system comprising a pair of high-frequency pickups for efficiently detecting surface high-frequency currents induced on the vehicle body and flowing concentrically on-the trunk lid and/or engine hood of the vehicle body, said high-frequency pickups being mounted on one of said trunk lid and engine hood at the marginal edge thereof with a predetermined spacing between said high-frequency pickups or alternatively mounted respectively on the marginal edges of said trunk lid and engine hood, one of said high-frequency pickups being adapted to be automatically selected such that it can receive the radio or other waves more sensitively.

Claim 22

Dependent Claim 100 words

A_diversity type automobile antenna system comprising a pair of high-frequency pickups for efficiently detecting surface high-frequency currents induced on the vehicle body and flowing concentrically on-the trunk lid and/or engine hood of the vehicle body, said high-frequency pickups being mounted on one of said trunk lid and engine hood at the marginal edge thereof with a predetermined spacing between said high-frequency pickups or alternatively mounted respectively on the marginal edges of said trunk lid and engine hood, one of said high-frequency pickups being adapted to be automatically selected such that it can receive the radio or other waves more sensitively.

Claim 23

Dependent Claim 86 words

A diversity type automobile antenna system comprising a pair of high-frequency pickups for efficiently detecting surface high-frequency currents induced on the - vehicle body by radio or other waves and flowing concentrically on the marginal edges of the vehicle body, said high-frequency pickups being mounted on the vehicle body at different margins thereof and extending parallel to said margins of the vehicle body, one of said high-frequency pickups being adapted to be automatically selected such that it can receive the radio or other waves more sensitively.

Claim 24

Dependent Claim 86 words

A diversity type automobile antenna system comprising a pair of high-frequency pickups for efficiently detecting surface high-frequency currents induced on the - vehicle body by radio or other waves and flowing concentrically on the marginal edges of the vehicle body, said high-frequency pickups being mounted on the vehicle body at different margins thereof and extending parallel to said margins of the vehicle body, one of said high-frequency pickups being adapted to be automatically selected such that it can receive the radio or other waves more sensitively.

Automobile antenna system

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