@@ -10,4 +10,13 @@ Figure 1 - Photograph of an assembled 8-channel RFPA
The parallel transmission (pTx) RF amplifier is used to separately control the amplitude and phase of eight transmission channels for pTx experiments.
## System design
As a main component the broadband high power amplifier ZHL-20W-13SW+ (SN: RB81028153) was used to amplify the signals of the eight channels. The maximum input power for each channel is - 3 dBm (see also the data sheet [ZHL-20W-13SW+]()). A wiring diagram of the PTX amplifier can be found in the appendix of this documentation. Further components and operating elements can be found in the following Table 1 or in Figures 2 - 4.
As a main component the broadband high power amplifier ZHL-20W-13SW+ (SN: RB81028153) was used to amplify the signals of the eight channels. The maximum input power for each channel is - 3 dBm (see also the data sheet [ZHL-20W-13SW+](./datasheets/Amplifier_Datasheet_ZHL-20W-13SW+.pdf)). A wiring diagram of the PTX amplifier is displayed in Figure 2.
![8ch RFPA wiring diagram](./images/rfpa_wiring_diagram.png"Wiring diagram of 8-channel RFPA")
Figure 2 - Wiring diagram of the 8-channel amplifier. The components used can be found in Table 1.
| Item No. | Component | Function | Est. cost per Pc. [€] | Amount | Total cost [€] | Source 1
