Table 1 Polynomial roots of the four-order single-passband filter
From: Design of Micro-strip Symmetrical Dual-band Filter Based on Wireless Sensor Network Nodes
Functions | Transmission zeros, the roots of P(Ω) | Reflection zeros, the roots of F(Ω) | Transmitting or reflecting singularities, the roots of E(Ω) |
|---|---|---|---|
1 | − 1.5j | − 0.9424j | − 0.7964 + 1.020j |
2 | 1.5j | 0.9424j | − 1.2310 + 0.1914j |
3 | − ∞ | − 0.4299j | 0.7964 + 1.020j |
4 | ∞ | 0.4299j | 1.2310 + 0.1914j |