Radio frequency noise and interference suppression in an integrated circuit

An integrated circuit comprising:

• at least one circuit unit on a single semiconductor chip, the at least one circuit unit being operable at a radio frequency, wherein
• the chip includes a resonant decoupling element interconnecting supply lines on the chip and comprising a series combination of (i) a plurality of on-chip capacitors located side-by-side on the chip and connected in parallel with each other and (ii) an inductance formed by a conductive line on the chip.

An integrated circuit comprising:

• a plurality of circuit units on a single semiconductor chip, at least some of which units are operable at radio frequencies;
• a supply line for supplying power to the plurality of circuit units, wherein at least a first one of the circuit units is operated so as to emit radio frequency energy and is coupled to the supply line via a respective on-chip resistive element forming part of an RC network such that supply current drawn by the first one of the circuit units passes through the resistive element, and wherein
• the supply line itself, together with circuitry other than the first one of the circuit units coupled to the supply line, has an associated capacitance forming part of the RC network to define a low-pass filter having a cut-off frequency above the frequency at which the first one of the circuit units chiefly emits radio frequency energy so as to isolate the circuitry coupled to the supply line from the first one of the circuit units.

An integrated circuit comprising:

• a plurality of circuit units, on a single semiconductor chip, at least some of the plurality of circuit units being operative at at least one radio frequency and being coupled to a supply line, wherein
• the chip includes (i) coupled to the supply line, at least one resonant element comprising a series combination of an inductance and a capacitance having a series resonant frequency corresponding to a frequency of operation of at least one of the plurality of circuit units that operate at the at least one radio frequency, (ii) at least one RC network including a resistive element connected in series between the supply line and a respective said circuit unit, and (iii) a supply line voltage regulator.