Radio-frequency apparatus with multi-band wideband balun and associated methods
AssigneeSilicon Laboratories Inc.
InventorsZoltan Vida, Attila L Zolomy
Life of this patent
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Abstract
An apparatus includes an RF apparatus, and a wideband multi-band matching balun. The wideband multi-band matching balun includes a multi-band balun, which includes at least one three-element frequency-dependent resonator (TEFDR). The wideband multi-band matching balun further includes a differential-to-differential matching circuit coupled to the RF apparatus. The differential-to-differential matching circuit includes at least one TEFDR.
Claims20
An apparatus, comprising:
- a radio-frequency (RF) apparatus;
- and
- a wideband multi-band matching balun using passive components to provide simultaneous balun and impedance matching functionality in multiple bands, the wideband multi-band matching balun comprising:
- a multi-band balun, the multi-band balun comprising at least one three-element frequency-dependent resonator (TEFDR);
- and
- a differential-to-differential matching circuit coupled to the RF apparatus that provides impedance matching between the RF apparatus and the multi-band balun, the differential-to-differential matching circuit comprising at least one TEFDR,
- wherein the at least one TEFDR in the multi-band balun, the differential-to-differential matching circuit, or both, provides functionality of an inductor having a frequency-dependent inductance or a capacitor having a capacitance having a frequency-dependent capacitance.
An apparatus, comprising:
- a radio-frequency (RF) apparatus;
- and
- a wideband multi-band matching balun using passive components to provide simultaneous balun and impedance matching functionality in multiple bands, the wideband multi-band matching balun comprising:
- a multi-band balun, the multi-band balun comprising four three-element frequency-dependent resonator (TEFDRs);
- and
- a differential-to-differential matching circuit coupled to the RF apparatus, the differential-to-differential matching circuit comprising:
- a series inductor-capacitor (LC) network;
- and
- a pair of TEFDRs, comprising all fixed-value components, coupled to a series LC network,
- wherein at least one TEFDR in the multi-band balun, the differential-to-differential matching circuit, or both, provides functionality of an inductor having a frequency-dependent inductance or a capacitor having a capacitance having a frequency-dependent capacitance.
A method of operating an apparatus that includes a radio-frequency (RF) apparatus, the method comprising using a wideband multi-band matching balun using passive components to provide simultaneous balun and impedance matching functionality in multiple bands, wherein the wideband multi-band matching balun includes a multi-band balun coupled to a differential-to-differential matching circuit, wherein the multi-band balun comprises at least one three-element frequency-dependent resonator (TEFDR), and wherein the differential-to-differential matching circuit comprises at least one TEFDR, wherein the at least one TEFDR in the multi-band balun, the differential-to-differential matching circuit, or both, provides functionality of an inductor having a frequency-dependent inductance or a capacitor having a capacitance having a frequency-dependent capacitance.
Dependencies are inferred from the claim text.