This　paper　presents　a　single-polarized,　low-profile,　tightly　coupled　dipole　array　(TCDA)　with　a　7:1　bandwidth.　A　parasitic　patch,　positioned　parallel　to　the　dipole　arms,　functions　as　a　coupling　capacitor　to　enhance　ultra-wideband　performance.　A　Marchand　balun　is　employed　to　enable　ultra-wideband　balanced　feeding　and　impedance　matching.　To　suppress　undesired　resonances,　shorted　ridges　and　strips　are　incorporated,　effectively　shifting　them　outside　the　operating　band.　Additionally,　a　wide-angle　impedance　matching　(WAIM)　layer,　implemented　with　a　two-layer　split-ring　structure,　enhances　the　array＇s　scanning　performance.　Simulation　results　demonstrate　that　the　proposed　antenna　array　achieves　an　operational　bandwidth　exceeding　7:1　(2-14　GHz)　with　a　VSWR　below　3.2,　supporting　scanning　angles　of　±75°　and　±30°　in　the　E-　and　H-planes,　respectively.　The　overall　profile　remains　compact　at　just　10.1　mm　(0.067　λlow).　©　2025　IEEE.