US 12,470,286 B2
Dual-band radio terminal and filter structure
Kennet Lejnell, Ekerö (SE); Anders Ellgardt, Sundbyberg (SE); Fredrik Wester, Älvsjö (SE); and Fredrik Holmberg, Uppsala (SE)
Assigned to OVZON SWEDEN AB, Solna (SE)
Appl. No. 18/271,504
Filed by OVZON SWEDEN AB, Solna (SE)
PCT Filed Jan. 29, 2021, PCT No. PCT/EP2021/052189
§ 371(c)(1), (2) Date Jul. 10, 2023,
PCT Pub. No. WO2022/161630, PCT Pub. Date Aug. 4, 2022.
Prior Publication US 2024/0313852 A1, Sep. 19, 2024
Int. Cl. H04B 7/185 (2006.01)
CPC H04B 7/18513 (2013.01) 12 Claims
OG exemplary drawing
 
1. A terminal for dual-band radio communication with spacecrafts, the terminal comprising:
an antenna unit configured to exchange radio-frequency signals (RFR; RFT) bidirectionally with the spacecrafts;
a first amplifying and frequency-mixing circuitry con-figured to up convert an outgoing modulated signal (Tx) to be fed through a first waveguide conduit connected to the antenna unit;
a second amplifying and frequency-mixing circuitry configured to down convert an incoming signal (RW) received through a second waveguide conduit connected to the antenna unit; and
a modulator-demodulator unit configured to transform an outgoing baseband signal (BBT) into the outgoing modulated signal (Tx) and transform the incoming signal (RW) into a received baseband signal (BBR),
wherein each of the first and second waveguide conduits is arranged to forward radio-frequency signals on at least two separate bands (F1H, F1L; F2H, F2L),
wherein the first and second waveguide conduits comprise a respective or a common filter compartment being rotatable a predetermined angle around a rotation axis (AV, AP) relative to a frame so as to either engage a first waveguide filter pair (F1H, F2H) or a second waveguide filter pair (F1L, F2L) in the first and second waveguide conduits, which first waveguide filter pair (F1H, F2H) is adapted for radio communication at a higher band than the second waveguide filter pair (F1L, F2L).