Patent US3976959A successfully refreshed from Google Patents.
US3976959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planar balun
Assignee: Individual
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Filing: 1975-07-21
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Granted: 1976-08-24
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Expires: 1995-07-21
Abstract
Abstract A balun block for microwave and higher frequencies comprising, in one embodiment, a microstrip balun having a planar dielectric member, a ground plane of conductive material centrally positioned within said member and conducting means passing around said member in space relationship to said plane comprising means to receive an incoming guided energy wave and to split said incoming wave into two components of equal or unequal phase depending upon the state of balance of the incoming wave and means to conduct and recombine said components in predetermined phase relationships into an outgoing guided energy wave. A second embodiment comprises a stripline balun.
Inventors
- 👤 Russell A. Gaspari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:46
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/08; H01P5/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
82 words
A balun block for microwave and higher frequencies comprising a planar dielectric member, a ground plane of conductive material centrally positioned within said member and conducting means passing around three sides of said member in spaced relationship to said plane, said conducting means comprising means to receive an incoming guided energy wave and to split said incoming wave into two components of equal phase and means to conduct and recombine said components in predetermined phase relationships into an outgoing guided energy wave.
Claim 2
Dependent Claim
82 words
A balun block for microwave and higher frequencies comprising a planar dielectric member, a ground plane of conductive material centrally positioned within said member and conducting means passing around three sides of said member in spaced relationship to said plane, said conducting means comprising means to receive an incoming guided energy wave and to split said incoming wave into two components of equal phase and means to conduct and recombine said components in predetermined phase relationships into an outgoing guided energy wave.
Claim 3
Dependent Claim
25 words
Balun block according to claim 1 wherein said incoming wave is unbalanced, said components are recombined in amplitude reinforcement and said outgoing wave is balanced.
Claim 4
Dependent Claim
26 words
Balun block according to claim 1 wherein said incoming wave is balanced, said components are recombined in equal phase relationships and said outgoing wave is unbalanced.
Claim 5
Dependent Claim
31 words
Balun block according to claim 1 wherein said conducting and recombining means comprises two opposed transmission portions having a difference in length equal to one-half wave length or odd multiples thereof.
Claim 6
Dependent Claim
16 words
Balun block according to claim 1 wherein said receiving and splitting means is a T junction.
Claim 7
Dependent Claim
17 words
Balun block according to claim 5 wherein said receiving and splitting means comprises a microstrip T junction.
Claim 8
Dependent Claim
17 words
Balun block according to claim 5 wherein said receiving and splitting means comprises a stripline T junction.
Claim 9
Dependent Claim
130 words
A planar microwave balun transformer comprising in combination: a. a planar dielectric member; b. a planar deposited thin metallic film forming a ground plane within the member; c. a planar metallic film strip deposited on three sides of said dielectric member and forming a transmission line conducting means in conjunction with the ground plane, said conducting means forming a power division network wherein an input energy wave may be split into two component parts and a reforming network wherein the two component parts of the wave are combined to form a properly phased single transmittable energy wave, said transmittable wave being a balanced wave when the phases of said input wave are unbalanced, said transmittable wave being an unbalanced wave when the phases of said input wave are in balance.
Claim 10
Dependent Claim
130 words
A planar microwave balun transformer comprising in combination: a. a planar dielectric member; b. a planar deposited thin metallic film forming a ground plane within the member; c. a planar metallic film strip deposited on three sides of said dielectric member and forming a transmission line conducting means in conjunction with the ground plane, said conducting means forming a power division network wherein an input energy wave may be split into two component parts and a reforming network wherein the two component parts of the wave are combined to form a properly phased single transmittable energy wave, said transmittable wave being a balanced wave when the phases of said input wave are unbalanced, said transmittable wave being an unbalanced wave when the phases of said input wave are in balance.
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) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |