This paper puts forward a new bridged T-type photodetector array which is diffe rent from traveling-wave detector array (TWDA).This design uses the bridge T-type structure based on constant-R network instead of the traditional consta nt-K network in TWDA which is formed by artificial transmission line structure.Firstly,the coupled microstrip line p rovides the series inductance and the required mutual inductance,capacitance in parallel to one of the microstrip lin e.After that,a single photodiode is embedded into the artificial transmission line,which constitutes a single array cell.Then according to the array structure,these single array cells are cascaded to form a bridge T-type photod etector array.The simulation results show that the proposed bridge T-type photoelectric detector array can make mult iple photoelectric detectors composite power and improve working bandwidth at the same time.Although the synt hetic power of the bridge T-type photoelectric detector array has slightly reduced compared with that of the tr aditional TWDA.But the working bandwidth is improved by 2.A reduc ed amount of synthetic power can be replenished by increasing the number of casc ades.