A new circuital model for the longitudinal-transverse waveguide slot coupler

✍ Scribed by G. Andrea Casula; Giuseppe Mazzarella; Giorgio Montisci

• Book ID: 102517275
• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 216 KB
• Volume: 44
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.20621

✦ Synopsis

and the output power is 37.5 to 38.3 dBm from 2.9 to 4 GHz. For the completed power amplifier, the measured small-signal gain is about 22 dB with better than 12-dB input/output return loss from 3 to 4 GHz, as shown in Figure 3. The total noise figure of the completed amplifier is as low as 3.9 dB at 3.3 GHz. The 1-dB gain-compression output power of 38.11 dBm with an associated gain of 21.33 dB and 25.6% PAE at 3.5 GHz is shown in Figure 4. The intermodulation distortion is 41.46 dBc at 3.5 GHz when one-tone output power is 28 dBm, as shown in Figure 5. After simple calculation, IP3 of 48.73 dBm shows high linearity for such a high-power amplifier.

5. CONCLUSION

In summary, a low-cost and high-performance S-band power amplifier fabricated on FR-4 PCB has been developed. Very excellent performance with 38-dBm output power, 25.6% PAE, 22-dB small-signal gain, better than 12-dB input/output return loss, 3.9-dB noise figure, and 48.7-dBm 3 rd -order intercept point have been achieved.