Schwenson, Lauri MaximilianLauri MaximilianSchwensonNellen, SimonSimonNellenLauck, SebastianSebastianLauckDeumer, MilanMilanDeumerWenzel, KonstantinKonstantinWenzelKohlhaas, RobertRobertKohlhaasLiebermeister, LarsLarsLiebermeisterBreuer, SteffenSteffenBreuerSchell, MartinMartinSchellGlobisch, BjörnBjörnGlobisch2023-06-272023-06-272022https://publica.fraunhofer.de/handle/publica/44482210.23919/EuMC54642.2022.99244232-s2.0-85142250444Photoconductive antennas (PCAs) are well established as optoelectronic terahertz receivers. Size-reduction of emitter and receiver is key to address future applications like wireless communication, imaging and radar with optoelectronic continuous-wave (cw) terahertz systems. At the same time, directivity optimization and detailed knowledge of the radiation pattern is required. In this paper, we present a miniaturized PCA receiver and compare it to a state-of-the-art receiver. In a free-space scenario, where no additional terahertz optics are used, the miniaturized receivers perform up to + 10 dB beyond state-of-the-art. Radiation pattern measurements of both receivers are carried out between 100GHz and 1 THz, showing a 300 GHz extended main lobe with the miniaturized device.encontinuous-wave terahertzdirectivitymicrowave photonicsminiaturizationphotoconductive antennaradiation patternterahertz receiverconference paper