NOVELTY - An array of backward diodes has a cathode layer which is adjacent to a side of a non-uniform doping profile. An antimonide-based tunnel barrier layer adjacent to other side of the spacer layer has a monolithically integrated antenna that is bonded to each backward diode.    USE - Array of backward diodes used in imaging/detection device (claimed), terahertz (THz) imaging and diagnostics, cancer detection of breast, oral, skin, prostate and cervical, skin assessment, burn diagnostics and dermatology, cosmetic diagnostics and treatment orthopedic imaging of exposed bones, cancer treatment, cosmetic surgery, cosmetic therapeutics volatile organic compound detection and spectroscopy, identifying polymorphs and hydrides in drug compounds, counter detection of drugs and pharmaceutical, microchip inspection, corrosion identification, gaseous compound inspection and detection, pharmaceutical quality control, package inspection, wind blade inspection, jet-propulsion inspection, material integrity and structural analysis, fuel cell quality control and diagnostics, process monitoring, pollution monitoring, diagnostics of natural gas pipelines, detection of separation of laminated materials, systems for three dimensional inspection of fragile art products, molecular recognition and protein folding, checkpoint screening, concealed contraband detection, controlled substances detection, harmful compound identification, biometrics (gates, hand, walking behavior), imaging through fog, evaluation of agricultural products, imaging of fresh frozen samples, moisture differences, line of sight high-speed digital and analog communications, military applications for high speed, extensions of broadband fiber optics, high magnetic field application, sub-millimeter wave (mmW) and millimeter wave (mmW) astronomy, atmospheric observations/monitoring (such as ozone depletion), guidance and identification system, aircraft penetration of dust and fog for improved visibility, radio frequency/electro-optical/Optics imaging systems, radio frequency/electro-optical/Optics phased arrays, millimeter wave (mmW) imaging, millimeter wave (mmW) communications millimeter wave (mmW) adaptive arrays, millimeter wave (mmW) smart antennas, and UV communications/radios.    ADVANTAGE - The biopsy time and number follow up operations during medical operation of excised tissues are reduced. Smaller slot antenna topologies are highly beneficial for high-resolution focal plane THz imaging arrays. Thus the pattern tilting for the multiband antennas result in higher resolution without resorting to large and bulky lenses.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for imaging/detection device.    DESCRIPTION OF DRAWING(S) - The drawings show the explanatory views of the THz imaging system, image of the object, image of the digitally processed image of the object.    Object (10)    Uniform THz radiation (12)    Lens system (14)    Hemispherical lens (16)    Digital image (18)