Table 1 Performance comparison of the presented PRGW 3 dB hybrid coupler with other proposed couplers in the literature.
From: Analysis and design of ultra-wideband PRGW hybrid coupler using PEC/PMC waveguide model
Ref | Technology | Center frequency (GHz) | Bandwidth (S11 < − 10 dB) | Amplitude balance BW (dB) | Phase impedance BW % | Size (λg × λg) |
|---|---|---|---|---|---|---|
PRGW | 30 | 6% | − 3.6 ± 1 BW = 6% | 90° ± 10 BW = 6% | 1.1 × 1.1 | |
PRGW | 30 | 26.5% | − 3.7 ± 0.75 BW = 6% | 90° ± 5 BW = 6% | 1.3 × 1.3 | |
PRGW | 30 | 26.6% | − 3.6 ± 0.75 BW = 13% | 90° ± 5 BW = 26.5% | 1.2 × 1.2 | |
PRGW | 30 | 13% | − 3.6 ± 0.5 BW = 6.7% | 90° ± 10 BW = 14% | 1.2 × 1.2 | |
Microstrip | 30 | 11% | − 4 ± 1 BW = 11% | 90° ± 1 BW = 11% | 1.3 × 1.1 | |
SIW | 24 | 18% | − 4.7 ± 0.5 BW = 10% | 92 ± 2 BW = 18% | 1.4 × 1.5 | |
RGW | 15 | 14% | − 3.5 ± 0.75 BW = 7% | – | 1.58 × 1.58 | |
PRGW | 60 | 11% | − 3.7 ± 0.5 BW = 11% | 90° ± 5 BW = 11% | 1.9 × 1.1 | |
SIGW | 26 | 26.4% | − 3.7 ± 1 – | 90° ± 10 – | 1 × 1 | |
This work | PRGW | 30 | 46% | − 3.5 ± 0.5 BW = 41% | 90° ± 5 BW = 43.75 | 1.1 × 0.75 |
