tion (dB) + 2.0 + 2.2 (EIRP accuracy) + 3.4 (EIRP accuracy) + 2.0 (TRP accuracy) + 3.0 (TRP accuracy) New Radio Access RF and Transceiver Design Considerations Transmitter output power ON power level Transmitter ON period Uplink transmission GP or uplink transmission (downlink transmission) OFF power level Transmitter OFF Transmitter transient Transmitter OFF period period period Figure 5.8 Illustration of transmitter transient period [5]. channel bandwidth of up to 400 MHz and transmitter transient period 3 of 3 us, which reflects the ON/OFF switching time for a TDD system (see Fig. 5.8). The specifications fur- ther take into account the efficiency/performance degradation of gNB RF components in the mmWave bands, which are compensated by beamforming and high-gain antenna arrays, and by relaxing certain radio requirements such as adjacent channel leakage ratio (ACLR) in the transmitter side and noise figure (NF) in the receiver side. The transmit power fluctuation is controlled by TRP accuracy for per-carrier total power deviation and EIRP accuracy, accounting for the antenna performance. 5.2.2 Conducted and Radiated Base Station Transceiver Characteristics The radiated RF requirements for the NR devices and base stations are primarily derived from the corresponding conducted RF requirements. Unlike the conducted requirements, the radiated requirements are inclusive of the antennas, thus the emission levels such as BS output power and unwanted emissions are defined either by incorporating the antenna gain as a directional requirement using an effective isotropic radiated power (EIRP) or by defining lim- its using TRP. The directional requirement is a requirement which is applied to a specific direction within the OTA coverage range for the transmitter and when the AoA of the inci- dent wave of a received signal is within the OTA reference sensitivity range of angles of arrival (REFSENS RoAoA) (this is determined by the contour defined by the points at which the achieved EIS is 3 dB higher than the achieved EIS i