At least one of the following requirements is satisfied. A position of a curvature center of an arcuate portion in at least one of waveguide plates is selected between a connecting member and a power feeder, in accordance with a desired horizontal beam radiation characteristic. A curvature radius of the arcuate portion in at least one of the waveguide plates is selected in accordance with a desired vertical beam radiation characteristic. A slanted angle of a peripheral face of the arcuate portion, which connects a top face and a bottom face of each waveguide plate, in at least one of the waveguide plates is selected in accordance with a desired vertical beam radiation characteristic.

Claims

24 · 1 independent · depth 4

24 granted claims

›1.independentA semicircular radial antenna, comprising: a pair of semicircular waveguide plates, having a pair of linear edge portions, an arcuate edge portion def…+23

›2.↳ 1The semicircular radial antenna as set forth in claim 1 , wherein at least one of the waveguide plates is slidably fixed on the connecting member such…d2

›3.↳ 1The semicircular radial antenna as set forth in claim 1 , wherein at least one of the waveguide plates is detachably fixed on the connecting member.d2

›4.↳ 1The semicircular radial antenna as set forth in claim 1 , further comprising: a first plate member disposed on a top face of an upper waveguide plate …d2

›5.↳ 1The semicircular radial antenna as set forth in claim 1 , wherein the peripheral face of the arcuate portion is formed with at least one groove extend…d2+3

›9.↳ 1The semicircular radial antenna as set forth in claim 1 , further comprising a dielectric member formed along the peripheral face of the arcuate porti…d2+1

›11.↳ 1The semicircular radial antenna as set forth in claim 1 , further comprising a dielectric member formed along the peripheral face of the arcuate porti…d2+1

›13.↳ 1The semicircular radial antenna as set forth in claim 1 , further comprising a combiner through which the semicircular radial antenna is connected wit…d2+10

›14.↳ 13The semicircular radial antenna as set forth in claim 13 , further comprising a switch for selecting a signal outputted from the combiner or a signal …d3

›15.↳ 13The semicircular radial antenna as set forth in claim 13 , further comprising a phase shifter which shifts a phase of a signal obtained from the power…d3

›16.↳ 13The semicircular radial antenna as set forth in claim 13 , further comprising a phase shifter which shifts a phase of a signal obtained from the power…d3

›17.↳ 13The semicircular radial antenna as set forth in claim 13 , further comprising: a first combiner, through which the semicircular radial antenna is conn…d3+1

›19.↳ 13The semicircular radial antenna as set forth in claim 13 , further comprising: a first combiner, through which the semicircular radial antenna is conn…d3+1

›21.↳ 13The semicircular radial antenna as set forth in claim 13 , wherein the semicircular radial antenna is connected with at least two semicircular radial …d3

›22.↳ 13The semicircular radial antenna as set forth in claim 13 , further comprising at least one second antenna for receiving a wave signal having a frequen…d3

›23.↳ 13The semicircular radial antenna as set forth in claim 13 , further comprising at least two second semicircular antenna for receiving a wave signal hav…d3

›24.↳ 1The semicircular radial antenna as set forth in claim 1 , wherein the waveguide plates are provided as film substrates, and a flexible dielectric subs…d2

Classifications

3 codes

IPC · International Patent Classification

Section H — Electricity

H01Q1/300

USPC · US Patent Classification

343/772343/786

Claim changes

Soon

Coming soonHow the claims changed between publication and grant

See which claims were amended, added or cancelled during examination, with every added and removed word marked.

AmendedAddedCancelledUnchanged

The published claims of this patent are not paired with the granted ones in what we hold.

File wrapper

⤢ drag to zoom

USPTOApplicanthover for detail · click to open

Pendency

1.4 y

529 days filing → grant

Office actions

non-final + final

Responses

2 RCE

Examiner

Hoanganh Le

art unit —

Law firm

Law firm · Log in to unlock

Citations: 2 back · 0 forward

See the full prosecution history — every USPTO and applicant action on this file, in order.

Term & fees

See the term timeline — pendency span, in-force span, the maintenance fees paid and both computed expiry dates.

Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20020186173 A1	12 Dec 2002

Validity challenges

See the validity challenges on record — reexaminations, IPRs and PGRs, with their institution decisions and outcomes.

Citations

See every patent this one cites and every patent that cites it back — publication, assignee, and how each one was found.