EP0978729A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
High-frequency transmitter-receiving apparatus for such an application as vehicle-onboard radar system
Assignee: Hitachi Ltd
•
Filing: 1999-08-05
•
Granted: —
•
Expires: 2019-08-05
Abstract
Abstract A high-frequency transmitter-receiver apparatus includes a transceiver circuit (10) realized in a planar structure by a dielectric substrate (3) and a semiconductor chip (4) and a planar antenna (7) formed on a dielectric substrate (2) are provided on front and rear surfaces, respectively, of a single electrically conductive base plate (1). Signal lines of the planar circuit and the planar antenna are electrically interconnected by a coaxial line (106-1, 106-2).
Inventors
- 👤 Kenji Sekine
- 👤 Hiroshi Kondoh
- 👤 Keigo Kamozaki
- 👤 Hideyuki Nagaishi
- 👤 Kazuo Matsuura
- 👤 Terumi Nakazawa
- 👤 Michio Tanimoto
- 👤 Hideaki Sasaki
- 👤 Yuzo Taniguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 15:42
CPC Classifications
H; H10; H10W; H10W44/00; H10W44/20; G; G01; G01S; G01S7/00; G01S7/02; G01S7/03; G01S7/032; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/32; H01Q1/3208; H01Q1/3233; H01Q21/00; H01Q21/0087; H01Q23/00; G01S13/00; G01S13/88; G01S13/93; G01S13/931; G01S2013/9325; H10W44/203; H10W44/216; H10W44/241; H10W44/248; H10W70/00; H10W70/60; H10W70/67; H10W70/68; H10W70/682; H10W70/685; H10W72/00; H10W72/071; H10W72/075; H10W72/90; H10W72/951
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
77 words
A transmitter-receiver apparatus, comprising: a base plate (1); a transceiver circuit (3; 4; 10) provided on a
first surface of said base plate (1); and an antenna (2; 7) provided on a second surface
of said base plate (1) opposite to said first surface on
which said transceiver circuit is provided, wherein said transceiver circuit and said
antenna are electrically connected to each other through
a coaxial line (6; 14) which extends through said base
plate (1).
Claim 2
Dependent Claim
56 words
A transmitter-receiver apparatus according to
claim 1, wherein said transceiver circuit (3; 4; 10)
includes a metal circuit pattern (10) provided on a
first dielectric substrate (3) and a semiconductor chip
(4) connected to said metal circuit pattern (10), and wherein said antenna includes an metal antenna
pattern (7) provided on a second dielectric substrate
(2).
Claim 3
Dependent Claim
105 words
A transmitter-receiver apparatus according to
claim 2, wherein said coaxial line includes a center
conductor (6) which extends through a through-hole (106)
formed so as to extend through said base plate (1),
said first dielectric substrate (3) and said second
dielectric substrate (2) and which is electrically
connected to said metal circuit pattern (10) and said
metal antenna pattern (7), respectively, and wherein lateral surfaces of said through-hole
(106) formed in said first dielectric substrate (3) and
said second dielectric substrate (2), respectively, are
provided with electrically conductive layers (23) which
extend from said metal circuit pattern (10) and said
metal antenna pattern (7), respectively.
Claim 4
Dependent Claim
166 words
A high-frequency transmitter-receiver
apparatus comprising a high-frequency transceiver
circuit including an oscillator (127), an amplifier
(133) and a mixer circuit (123) and an antenna for
transmitting and receiving a high-frequency signal, wherein high-frequency circuits including the
oscillator (127), the amplifier (133) and the mixer
circuit (123) are each implemented in a planar circuit
structure by using an dielectric substrate (103) and
a semiconductor chip (4), while said antenna is
implemented in a planar antenna structure by using a
dielectric substrate (103), wherein said dielectric substrate (3; 103)
constituting a part of said planar circuit structure and
said dielectric substrate (2; 102) constituting a part
of said planar antenna structure are directly bonded on
first and second surfaces, respectively, of a single
electrically conductive base plate (1), said first and
second surfaces being opposite to each other, and wherein high-frequency signal lines of said
planar circuit and said planar antenna, respectively,
are interconnected by an coaxial line (6, 14; 106-1,
106-2) extending through said base plate (1).
Claim 5
Dependent Claim
43 words
A high-frequency transmitter-receiver
apparatus according to claim 4, wherein a mid portion (1-2) of said base plate
(1) where said transceiver circuit is provided and other
portion (1-1) of said base plate (1) are divided so as
to be separable from each other.
Claim 6
Dependent Claim
77 words
A high-frequency transmitter-receiver
apparatus according to claim 4, wherein those portions of said coaxial line
(6; 14) at which said coaxial line is to be connected,
respectively, to the dielectric substrate (3; 103)
constituting a part of said planar circuit structure and
the dielectric substrate (2; 102) constituting a part
of said planar antenna structure are realized in an
airtight structure by using a dielectric including glass
or ceramic which constitutes a part of said coaxial
line.
Claim 7
Dependent Claim
93 words
A high-frequency transmitter-receiver
apparatus according to claim 4, wherein at those portions of said coaxial line
where said coaxial line is connected to said planar
circuit structure and said planar antenna structure,
respectively, lateral surfaces of through-hole portions
through which a center conductor (6) of said coaxial
line extends and which are formed in the dielectric
substrate (3; 103) constituting a part of said planar
circuit structure and the dielectric substrate (2; 102)
constituting a part of said planar antenna structure,
respectively, are coated with an electrically conductive
layer including a plated layer.
Claim 8
Dependent Claim
192 words
An antenna unit incorporating a high-frequency
transmitter-receiver device including high-frequency
circuits having an oscillator (127), an amplifier (133)
and a mixer circuit (123) and implemented in a planar
circuit structure by using a dielectric substrate (2;
102) and a semiconductor chip (4; 104) and an antenna
(107) implemented in a planar antenna structure by using
a dielectric substrate (2; 102), said dielectric
substrate (103) constituting a part of said planar
circuit structure and said dielectric substrate (2; 102)
constituting a part of said planar antenna structure
being directly bonded on first and second surfaces,
respectively, of a single electrically conductive base
plate (1), said first and second surfaces being opposite
to each other, wherein high-frequency signal lines of
said planar circuit and said planar antenna, respectively,
are interconnected by an coaxial line (6; 14)
extending through said base plate (1; 101), wherein said high-frequency circuits are
enclosed by an electrically conductive cover (5; 105)
mounted directly on said base plate (1; 101), and wherein terminals for D.C. bias supply and for
intermediate-frequency signal are provided in said
electrically conductive cover in a portion thereof,
said terminals being electrically insulated from said
cover.
Claim 9
Dependent Claim
40 words
An antenna unit according to claim 8, wherein a portion of a circuit for processing
the intermediate-frequency signal outputted from said
high frequency transceiver circuit is accommodated
within said electrically conductive cover (105) in
addition to said high-frequency transceiver circuit.
Claim 10
Dependent Claim
79 words
An antenna unit according to claim 8, wherein a cover (16) made of a dielectric for
enclosing the antenna as a whole is provided at a side
where said antenna is provided, said cover (16) being
mounted directly on the base plate (1), while an
electrically conductive cover (15) enclosing the
transceiver circuit (3; 4; 10), a D.C. bias supply
circuitry, an intermediate-frequency circuit and other
circuitries is mounted directly on the base plate (1) at
the other side.
Claim 11
Dependent Claim
174 words
A high-frequency transmitter-receiver
apparatus, comprising: a base plate (1); an antenna (2; 7) provided on a first surface
of said base plate (1); a transceiver circuit (3; 4; 10) provided on a
second surface of said base plate (1) opposite to said
first surface and electrically connected to said
antenna; and a terminal (12; 12') for external connection
provided on said second surface of said base plate (1)
for supplying a source current to said transceiver
circuit or outputting a signal; wherein said base plate (1) being provided
with a concave portion in said first surface and covered
with said antenna and a through-hole (108) extending
through said concave portion and said second surface, wherein a connecting terminal for supplying a
source current to said transceiver circuit or outputting
a signal extends through said through-hole (108) and
electrically connected to said external terminal in said
concave portion, and wherein said connecting terminal is implemented
in a line structure having a metal conductor
(108-1) electrically insulated from said base plate (1)
in said through-hole (108).
Claim 12
Dependent Claim
42 words
A high-frequency transmitter-receiver
apparatus according to claim 11, wherein said connecting terminal is
implemented in an airtight structure by using a
dielectric (106-1) including glass or ceramic for
electrically insulating the core conductor of said
connecting terminal from said base plate (1).
Claim 13
Dependent Claim
55 words
A high-frequency transmitter-receiver
apparatus according to claim 11, wherein a connecting line constituted by a
cylindrical metallic sleeve (113) as an outer electrical
conductor, a dielectric provided internally of said
sleeve and a metal conductor provided internally of
said sleeve is employed for interconnection of said
connecting terminal or said antenna and said transceiver
circuit.
Claim 14
Dependent Claim
163 words
A high-frequency transmitter-receiver
apparatus, comprising: a base plate (1); an antenna (2; 7) provided on a first surface
of said base plate (1); a transceiver circuit (3; 4; 10) provided on a
second surface of said base plate (1) opposite to said
first surface and electrically connected to said
antenna; a first terminal array (131) for external
connection provided on said second surface of said base
plate (1) for supplying a source current to said
transceiver circuit; and a second terminal array (124) for external
connection provided on said second surface of said base
plate (1) for outputting an electric signal, wherein a first connecting terminal interconnecting
said transceiver circuit and said first
terminal (12) for the external connection on one hand
and a second connecting terminal for interconnecting
said transceiver circuit and said terminal (12) for the
external connection on the other hand are provided,
respectively, at different locations close to sides of a
substrate on which said transceiver circuit is formed.
Claim 15
Dependent Claim
176 words
A high-frequency transmitter-receiver
apparatus, comprising: a base plate (1); an antenna (2; 7) provided on a first surface
of said base plate (1); a transceiver circuit (3; 4; 10) provided on a
second surface of said base plate (1) opposite to said
first surface and electrically connected to said
antenna; a first terminal array (131) for external
connection provided on said second surface of said base
plate (1) for supplying a source current to said
transceiver circuit; and a second terminal array (124) for external
connection provided on said second surface of said base
plate (1) for outputting an electric signal, wherein said high-frequency transmitter-receiver
apparatus further comprises: first lines (125; 128) for interconnecting
first connecting terminals connected to said first
terminal array (131) and circuit components (127; 122,
123) of said transceiver circuit; and second lines (129) for interconnecting second
connecting terminals connected to said second terminal
array (124) and circuit components (127) of said
transceiver circuit, wherein said first and second lines are so
provided as not to extend in parallel with each other.
Claim 16
Dependent Claim
165 words
A high-frequency transmitter-receiver
apparatus, comprising: a base plate (1); an antenna (2; 7) provided on a first surface
of said base plate (1); a transceiver circuit (3; 4; 10) provided on a
second surface of said base plate (1) opposite to said
first surface and electrically connected to said
antenna; a first terminal array (131) for external
connection provided on said second surface of said base
plate (1) for supplying a source current to said
transceiver circuit; and a second terminal array (124) for external
connection provided on said second surface of said base
plate (1) for outputting an electric signal, wherein said high-frequency transmitter-receiver
apparatus further comprises: first lines (125; 128) for interconnecting
first connecting terminals connected to said first
terminal array (131) and circuit components of said
transceiver circuit; second lines for interconnecting second
connecting terminals connected to said second terminal
array (124) and circuit components of said transceiver
circuit, and a ground conductor provided between said first
lines and said second lines.
Claim 17
Dependent Claim
192 words
A high-frequency transmitter-receiver
apparatus of an integrated structure, comprising a high-frequency
transceiver circuit including an oscillator
(127), an amplifier (133) and a mixer circuit (123) and
an antenna (7) for sending/receiving a high-frequency
signal, wherein high-frequency circuits including the
oscillator (127), the amplifier (133) and the mixer
circuit (123) and said antenna (7) are provided on first
and second surfaces of a single electrically conductive
base plate (1), said first and second surfaces being
opposite to each other, wherein high-frequency signal lines of said
high-frequency circuit and said antenna (7) are
electrically interconnected by means of a coaxial line
(6; 14) which extends through said base plate, and
wherein a connecting terminal for connecting said high-frequency
circuit to an external circuit including a
power source circuit and a signal processing circuit is
implemented in a line structure having a metal conductor
electrically insulated from said base plate (1) and
disposed in such orientation as to extend partially
through said base plate (1) so that a lead-out portion
of a lead wire interconnecting said high-frequency
circuit and said external circuit is provided on said
second surface on which said antenna (7) is provided.
Claim 18
Dependent Claim
46 words
A high-frequency transmitter-receiver
apparatus according to claim 17, wherein said connecting terminal for said
external circuit is implemented in an airtight structure
by using a dielectric (106-1) including glass or ceramic
for electrically insulating the core conductor of said
connecting terminal from said base plate (1).
Claim 19
Dependent Claim
91 words
A high-frequency transmitter-receiver
apparatus according to claim 17, wherein outer conductors of said coaxial line
for interconnecting said high-frequency circuit and said
antenna (7) and said connecting terminal for connection
with the external circuit are each formed of a
cylindrical metal sleeve (113) of Kovar, iron or the
like with the core conductor and insulation material
being disposed within said sleeve (113), whereby each of
said coaxial line and said connecting terminal being
implemented as discrete parts, respectively, which are
mounted on said base plate (1) by a process including
welding.
Claim 20
Dependent Claim
46 words
A high-frequency transmitter-receiver
apparatus according to claim 17, wherein the core conductor of the line for
connection with the power source circuit or the signal
processing circuit is extended to be connected directly
to a terminal of said power source circuit or said
signal processing circuit.
Claim 21
Dependent Claim
86 words
A high-frequency transmitter-receiver
apparatus according to claim 17, wherein a lead wire which connects the metal
conductor of the line for connection with the power
source circuit or the signal processing circuit to a
terminal of said power source circuit or said signal
processing circuit is implemented in the form of flat
cable covered with an insulation coat and mounted by
welding or the like process so that the lead wire can be
led out in a direction along the surface of said base
plate (1).
Claim 22
Dependent Claim
154 words
A vehicle-onboard radar system mounted on a
motor vehicle for generating control information for
said motor vehicle, comprising: an antenna unit (151) for transmitting a radio
wave of a high frequency to receive an echo wave of said
high frequency for thereby detecting difference in
frequency between said radio wave transmitted and said
echo received; and a signal processing unit (152) for determining
environmental situation of said motor vehicle on the
basis of the detected frequency difference for
generating control information for said motor vehicle, wherein said antenna unit comprises an antenna
(7) for sending out said high-frequency radio wave and a
transceiver circuit for generating said high frequency
and detecting said frequency difference, said antenna
and said transceiver circuit being disposed on opposite
surfaces, respectively, of a base plate (1), and wherein said antenna and said transceiver
circuit is electrically interconnected by means of a
coaxial line extending through said base plate (1).
Claim 23
Dependent Claim
176 words
A vehicle-onboard radar system mounted on a
motor vehicle for generating control information for
said motor vehicle, comprising: an antenna unit (151) for transmitting a radio
wave of a high frequency to receive an echo wave of said
high frequency for thereby detecting difference in
frequency between said radio wave transmitted and said
echo received; and a signal processing unit (152) for determining
environmental situation of said motor vehicle on the
basis of the detected frequency difference for
generating control information for said motor vehicle, wherein said antenna unit comprises an antenna
(7) for sending out said high-frequency radio wave and a
transceiver circuit for generating said high frequency
and detecting said frequency difference, said antenna
and said transceiver circuit being disposed on opposite
surfaces, respectively, of a base plate (1), and wherein a first external terminal array (131)
for supplying a source current to said transceiver
circuit and a second external terminal array (124) for
outputting information indicating said frequency from
said transceiver circuit are disposed along different
sides, respectively, of said base plate (1).
References Cited (Backward Citations)
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