Research Article
Performance Driven Six-Port Receiver and Its Advantages over Low-IF Receiver Architecture
Table 2
Architectural comparison between SPR and low-IF receiver.
| Architecture | Six-port based receiver | Low-IF receiver |
| Key components | 4 Diode detectors + 3 quadrature hybrids + 1 power divider | 2 4 transistors Gilbert cell mixer + 1 phase shifter + 1 power divider + 2 low pass filters | Bias requirement | No | Yes | Receiver LO Frequency Planning | No, same as carrier frequency | Yes | Input RF bandwidth | 2–18 GHz | 0.7–2.7 GHz | 3 dB demodulation bandwidth | ~29 MHz | ~185 MHz |
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