US3928854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
V-type directional antenna
Assignee: Individual
•
Filing: 1974-05-17
•
Granted: 1975-12-23
•
Expires: 1994-05-17
Abstract
Abstract An antenna for highly directional radiation forming a narrow beam in a first plane and a wide beam in a second plane perpendicular to the first plane without back radiation and with minor lobes of low amplitude. The antenna is formed by at least two basic V-antennas of which the radiators are respectively connected to each other by resistive loads attached about a quarter wavelength from the open ends of the radiators. The antenna can be usefully employed for television reception and for intrusion detectors.
Inventors
- 👤 Maurice Tacussel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:09
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/44; H01Q11/00; H01Q11/02; H01Q11/06; H01Q9/06; H01Q9/065
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
83 words
A directional antenna comprising at least two longitudinally spaced dipoLe antennas each formed by a pair of radiators in V formation, the end of each radiator distant from the open end of the radiator being connected to the corresponding end of the radiator of the adjacent antenna and to one of the outputs of the antenna, wherein at least two adjacent antennas have a resistive load directly connected between their corresponding radiators in the region spaced from the open ends of the radiators.
Claim 2
Dependent Claim
83 words
A directional antenna comprising at least two longitudinally spaced dipoLe antennas each formed by a pair of radiators in V formation, the end of each radiator distant from the open end of the radiator being connected to the corresponding end of the radiator of the adjacent antenna and to one of the outputs of the antenna, wherein at least two adjacent antennas have a resistive load directly connected between their corresponding radiators in the region spaced from the open ends of the radiators.
Claim 3
Dependent Claim
13 words
An antenna as claimed in claim 1, wherein the said radiators are straight.
Claim 4
Dependent Claim
15 words
An antenna as claimed in claim 2, wherein the length of the radiators are identical.
Claim 5
Dependent Claim
21 words
An antenna as claimed in claim 1, wherein the vertex angles of the V of each of the antennas are identical.
Claim 6
Dependent Claim
26 words
An antenna as claimed in claim 1, wherein the longitudinal spacing between the two antennas is between 0.30 and 0.45 times the length of a radiator.
Claim 7
Dependent Claim
25 words
An antenna as claimed in claim 1, wherein the vertex angle of the V formed by the two radiators of the antenna is about 90*.
Claim 8
Dependent Claim
16 words
An antenna as claimed in claim 1, wherein the said radiators are made up of rods.
Claim 9
Dependent Claim
16 words
An antenna as claimed in claim 1, wherein the said radiators are made up of tubes.
Claim 10
Dependent Claim
18 words
An antenna as claimed in claim 1, wherein the antenna is formed by stamping from a metal plate.
Claim 11
Dependent Claim
22 words
An antenna as claimed in claim 1, wherein the antenna is formed by photo-etching of a metal sheet on an insulating substrate.
Claim 12
Dependent Claim
39 words
An antenna as claimed in claim 10, wherein located adjacent the base of the antenna, a conducting portion is formed from the metallic plate, the conducting portion being adapted to receive connections from electrical elements associated with the antenna.
Claim 13
Dependent Claim
101 words
A directional antenna comprising at least two longitudinally spaced dipole antennas each formed by a pair of radiators in V formation, the end of each radiator distant from the open end of the radiator being connected to the corresponding end of the radiator of the adjacent antenna and to one of the outputs of the antenna, wherein at least two adjacent antennas have a resistive load connected between their corresponding radiators, said load located on each of the said radiators at a distance from the open ends of the radiator of about 0.2 to 0.4 times the length of the radiator.
Claim 14
Dependent Claim
101 words
A directional antenna comprising at least two longitudinally spaced dipole antennas each formed by a pair of radiators in V formation, the end of each radiator distant from the open end of the radiator being connected to the corresponding end of the radiator of the adjacent antenna and to one of the outputs of the antenna, wherein at least two adjacent antennas have a resistive load connected between their corresponding radiators, said load located on each of the said radiators at a distance from the open ends of the radiator of about 0.2 to 0.4 times the length of the radiator.
Claim 15
Dependent Claim
65 words
An antenna as claimed in claim 1, wherein the length of each radiator is between 0.65 and 1.0 times the wavelength of the central frequency of the operating band of the antenna and wherein the connecting points of the said resistive load are located, in relation to the open end of the corresponding radiator at a distance of between 0.15 and 0.25 times said wavelength.
Claim 16
Dependent Claim
20 words
An antenna as claimed in claim 12, wherein the said resistive load has a value of several hundreds of ohms.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |