Continuously Frequency-Tunable Horn Filtennas Based on Dual-Post Resonators

Figure 2

Dual-post resonator filter. (a) The dual-post resonators. (b) The DPR filter singlet schematic. (c) The DPR equivalent circuit. (d) The dual-post resonators and tuning screws variables.

(a)

(b)

(c)

(d)