Method and device for broadband high isolation coupling
AssigneeRohde & Schwarz GmbH & Co. KG
InventorsNenad Stojaković, Reiner Franke
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Abstract
An isolation coupler comprises a frequency splitter (36) for splitting an input signal (1) into a low frequency partial signal (2) and a high frequency partial signal (4) and a first isolating transformer (33) for transforming a signal derived from the high frequency partial signal (4) in a transformed high frequency partial signal (5). Moreover it may include a modulator (21) for modulating the low frequency partial signal (2) with a modulation signal (6) resulting in a modulated low frequency partial signal (7) and a second isolating transformer (34) for transforming a signal derived from the modulated low frequency partial signal (7) in a transformed low frequency partial signal (8).
Claims13
An isolation coupler comprising:
- a frequency splitter for splitting an input signal into a low frequency partial signal and a high frequency partial signal,
- a first isolating transformer for transforming a signal derived from the high frequency partial signal in a transformed high frequency partial signal,
- a modulator for modulating the low frequency partial signal with a modulation signal resulting in a modulated low frequency partial signal,
- a second isolating transformer for transforming a signal derived from the modulated low frequency partial signal in a transformed low frequency partial signal,
- a demodulator for demodulating the transformed low frequency partial signal using a demodulation signal resulting in a demodulated low frequency partial signal, and
- a combiner for combining the transformed high frequency partial signal and a signal derived from the demodulated low frequency partial signal resulting in an output signal.
A method for isolation coupling, comprising steps of:
- splitting an input signal into a low frequency partial signal and a high frequency partial signal,
- transforming a signal derived from the high frequency partial signal using a first isolating transformer in a transformed high frequency partial signal,
- modulating the low frequency partial signal with a modulation signal resulting in a modulated low frequency partial signal,
- transforming a signal derived from the modulated low frequency partial signal using a second isolating transformer in a transformed low frequency partial signal,
- demodulating the transformed low frequency partial signal using a demodulation signal resulting in a demodulated low frequency partial signal, and
- combining the transformed high frequency partial signal and a signal derived from the demodulated low frequency partial signal resulting in an output signal.
Dependencies are inferred from the claim text.