Ultra wideband antenna having frequency selectivity

An electromagnetic antenna apparatus;

• the apparatus exhibiting a generally continuous signal response between a first frequency and a second frequency;
• the apparatus exhibiting a deviation from said signal response in a frequency region centered substantially at a selected frequency between said first frequency and said second frequency;
• the apparatus comprising:
• (a) at least one substantially planar substantially plate-like antenna transceiving element having a periphery;
• (b) a feed structure for each respective antenna transceiving element of said at least one antenna transceiving element;
• transceiving signals being communicated with each said respective antenna transceiving element via a respective said feed structure;
• (c) a discontinuity structure in said periphery of at least one selected antenna transceiving element of said at least one antenna transceiving element;
• said discontinuity structure being connected with said respective feed structure for said at least one selected selected antenna transceiving element;
• said discontinuity structure being configured for effecting return of selected said transceiving signals to said respective feed structure as return signals;
• said return signals effecting said deviation.

An antenna apparatus for transceiving electromagnetic signals;

• the apparatus exhibiting a generally continuous signal response between a first frequency and a second frequency;
• the apparatus exhibiting a deviation from said signal response in at least one frequency region;
• each respective frequency region of said at least one frequency region being centered substantially at a respective selected frequency between said first frequency and said second frequency;
• the apparatus comprising:
• (a) at least one substantially planar substantially plate-like transceiving element having a periphery;
• (b) at least one feed structure;
• each respective said at least one transceiving element transferring said electromagnetic signals via a respective feed structure of said at least one feed structure;
• (c) at least one selected transceiving element of said at least one transceiving element including a discontinuity structure in said periphery;
• said discontinuity structure being connected with said respective feed structure for effecting return of selected said transceiving signals to said respective feed structure as return signals;
• said return signals effecting said deviation.

An electromagnetic antenna apparatus;

• the apparatus exhibiting a generally continuous signal response between a first frequency and a second frequency;
• the apparatus exhibiting a deviation from said signal response in a frequency region centered substantially at a selected frequency between said first frequency and said second frequency;
• the apparatus comprising:
• (a) a substantially planar antenna transceiving element;
• (b) a feed structure;
• said feed structure being coupled with said antenna transceiving element for communicating transceiving signals with said antenna transceiving element;
• and
• (c) a discontinuity structure in said antenna transceiving element;
• said discontinuity structure being connected with said feed structure;
• said discontinuity structure being configured for effecting return of selected said transceiving signals to said feed structure as return signals;
• said return signals effecting said deviation;
• said antenna transceiving element having a polygonal shape defined by a periphery;
• said discontinuity structure including a first deviation structure interrupting said periphery at a first deviation locus displaced a first peripheral distance in a first direction along said periphery from said feed structure;
• said first deviation structure extending to a first return distance from said first deviation locus toward said feed structure;
• said first return distance being sufficient to establish signal coupling between said first deviation structure and said feed structure;
• said first peripheral distance plus said first return distance substantially approximating one-half said selected wavelength.

An electromagnetic antenna apparatus;

• the apparatus exhibiting a generally continuous signal response between a first frequency and a second frequency;
• the apparatus exhibiting a deviation from said signal response in a frequency region centered substantially at a selected frequency between said first frequency and said second frequency;
• the apparatus comprising:
• (a) at least one substantially planar antenna transceiving element;
• (b) a feed structure for each respective antenna transceiving element of said at least one antenna transceiving element;
• transceiving signals being communicated with each said respective antenna transceiving element via a respective said feed structure;
• (c) a discontinuity structure in at least one selected antenna transceiving element of said respective antenna transceiving element;
• said discontinuity structure being connected with said respective feed structure for said at least one selected antenna transceiving element;
• said discontinuity structure being configured for effecting return of selected said transceiving signals to said respective feed structure as return signals;
• said return signals effecting said deviation;
• said at least one selected antenna transceiving element having a polygonal shape defined by a periphery;
• said discontinuity structure including a first deviation structure interrupting said periphery at a first deviation locus displaced a first peripheral distance in a first direction along said periphery from said respective feed structure;
• said first deviation structure extending to a first return distance from said first deviation locus toward said respective feed structure;
• said first return distance being sufficient to establish signal coupling between said first deviation structure and said respective feed structure;
• said selected frequency having a selected wavelength;
• said first peripheral distance plus said first return distance substantially approximating one-half said selected wavelength.

An antenna apparatus for transceiving electromagnetic signals;

• the apparatus exhibiting a generally continuous signal response between a first frequency and a second frequency;
• the apparatus exhibiting a deviation from said signal response in at least one frequency region;
• each respective frequency region of said at least one frequency region being centered substantially at a respective selected frequency between said first frequency and said second frequency;
• the apparatus comprising:
• (a) at least one substantially planar transceiving element;
• (b) at least one feed structure;
• each respective said at least one transceiving element transferring said electromagnetic signals via a respective feed structure of said at least one feed structure;
• (c) at least one selected transceiving element of said at least one transceiving element including a discontinuity structure;
• said discontinuity structure being connected with said respective feed structure for effecting return of selected said transceiving signals to said respective feed structure as return signals;
• said return signals effecting said deviation;
• said at least one selected transceiving element having a polygonal shape defined by a periphery;
• said polygonal shape being generally symmetric about an axis;
• said axis intersecting said respective feed structure;
• said discontinuity structure comprising a plurality of material free zones in said polygonal shape;
• said plurality of material free zones being arranged substantially symmetrically with respect to said axis;
• each respective material free zone interrupting said periphery at a respective deviation locus displaced a respective deviation distance along said periphery from said respective feed structure;
• each said respective material free zone extending a respective return distance from said respective deviation locus toward said respective feed structure;
• said respective return distance being sufficient to establish signal coupling between said respective deviation structure and said respective feed structure;
• each said respective selected frequency having a respective selected wavelength;
• said respective peripheral distance plus said respective return distance substantially approximating one-half of a respective selected wavelength.