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US 5,966,059 AGranted
Phase shifting power coupler with three signals of equal amplitude
AssigneeMotorola, Inc.
InventorBernard Eugene Sigmon
Life of this patent
Estimating the term…
Abstract
A three-way phase shifting power coupler (20) processes a primary signal (26) to provide first, second, and third secondary signals (32, 38, and 44) of substantially equal amplitudes. The first and second secondary signals (32 and 38) are phase shifted to be in-phase relative to the primary signal (26). The third secondary signal (44) is phase shifted to produce a quarter-wavelength difference between third secondary signal (44) and the first and second secondary signals (32 and 38). First, second, and third secondary signals (32, 38, and 44) are provided for distribution into a multi-stage amplifier (22). The power coupler (20) is preferably implemented in microstrip.
Claims20
A three-way phase shifting power coupler comprising:
- a primary port for receiving said primary signal, said primary signal exhibiting a primary phase;
- a first secondary port for providing a first secondary signal of said primary signal, said first secondary signal exhibiting a first phase relative to said primary phase;
- a second secondary port for providing a second secondary signal of said primary signal, said second secondary signal exhibiting a second phase relative to said primary phase;
- and
- a third secondary port for providing a third secondary signal of said primary signal, said third secondary signal exhibiting a third phase relative to said primary phase,
- wherein said first and second phases are substantially in-phase with said primary phase, said first and second secondary signals exhibiting substantially the same phase delay through the power coupler relative to the primary phase of said primary signal, and wherein said third phase lags said said primary phase by approximately ninety degrees,
- and wherein said first secondary signal exhibits a first amplitude;
- said second secondary signal exhibits a second amplitude;
- and
- said third secondary signal exhibits a third amplitude, said first, second, and third amplitudes being substantially equal.
7 more elements
A three-way phase shifting power coupler comprising:
- a primary port for receiving said primary signal, said primary signal exhibiting a primary phase;
- a first secondary port for providing a first secondary signal of said primary signal, said first secondary signal exhibiting a first phase relative to said primary phase;
- a second secondary port for providing a second secondary signal of said primary signal, said second secondary signal exhibiting a second phase relative to said primary phase;
- and
- a third secondary port for providing a third secondary signal of said primary signal, said third secondary signal exhibiting a third phase relative to said primary phase,
- wherein said first and second phases are substantially in-phase, and wherein said third phase lags said first and second phases by approximately ninety degrees,
- and wherein:
- said primary signal has a primary signal amplitude;
- said first secondary signal exhibits a first amplitude;
- said second secondary signal exhibits a second amplitude;
- and
- said third secondary signal exhibits a third amplitude, said first, second, and third amplitudes being substantially equal and approximately one-third of said primary signal amplitude.
9 more elements
A three-way phase shifting power coupler for processing a primary signal, said power coupler comprising:
- a primary port for coupling said primary signal with first, second, and third secondary signals;
- a first circuit having a first primary end coupled to said primary port and a first secondary end, said first circuit being configured to phase shift said first secondary signal by a first phase delay;
- a second circuit having a second primary end coupled to said primary port and a second secondary end, said second circuit being configured to phase shift said second secondary signal of said primary signal by substantially said first phase delay, and said second circuit being symmetrical relative to said first circuit;
- and
- a third circuit having a third primary end coupled to said primary port and a third secondary end, said third circuit being configured to phase shift said third secondary signal of said primary signal by a second phase delay, said second phase delay lagging said first phase delay by approximately ninety degrees,
- wherein the first phase delay is substantially one-wavelength, and wherein said first, second and third secondary signals are substantially equal in amplitude.
3 more elements
A three-way phase shifting power coupler for processing a primary signal, said primary signal exhibiting a primary phase, and said power coupler comprising:
- a primary port for receiving said primary signal;
- a first secondary port for providing a first secondary signal of said primary signal, said first secondary signal exhibiting a first phase relative to said primary phase;
- a second secondary port for providing a second secondary signal of said primary signal, said second secondary signal exhibiting a second phase relative to said primary phase;
- a third secondary port for providing a third secondary signal of said primary signal, said third secondary signal exhibiting a third phase relative to said primary phase, said third phase being unequal to said first and second phases;
- a first circuit having a first primary end coupled to said primary port and a first secondary end coupled to said first secondary port;
- a second circuit having a second primary end coupled to said primary port and a second secondary end coupled to said second secondary port;
- a third circuit having a third primary end coupled to said primary port and a third secondary end coupled to said third secondary port;
- a first capacitor coupled to said first primary end and having a first terminal end;
- a first port located at said first terminal end;
- a first inductor element coupled between said first terminal end and said first secondary end;
- and
- a second capacitor coupled between said first secondary end and said third secondary end.
9 more elements
A three-way phase shifting power coupler for processing a primary signal, said power coupler comprising:
- a primary port for coupling said primary signal with first, second, and third secondary signals;
- a first circuit having a first primary end coupled to said primary port and a first secondary end, said first circuit being configured to phase shift said first secondary signal by a first phase delay;
- a second circuit having a second primary end coupled to said primary port and a second secondary end, said second circuit being configured to phase shift said second secondary signal of said primary signal by substantially said first phase delay, and said second circuit being symmetrical relative to said first circuit;
- and
- a third circuit having a third primary end coupled to said primary port and a third secondary end, said third circuit being configured to phase shift said third secondary signal of said primary signal by a second phase delay, said second phase delay lagging said first phase delay by approximately ninety degrees, and
- wherein said second phase delay is configured to produce an approximately quarter-wavelength phase difference between said first secondary signal and said third secondary signal, and to produce said approximately quarter-wavelength phase difference between said second secondary signal and said third secondary signal, and wherein
- said first phase delay is in-phase with said primary signal at said primary port, and wherein
- said first, second and third secondary signals are substantially equal in amplitude and approximately one-third an amplitude of said primary signal at said primary port.
5 more elements
A three-way phase shifting power coupler for processing a primary signal, said power coupler comprising:
- a primary port for coupling said primary signal with first, second, and third secondary signals;
- a first circuit having a first primary end coupled to said primary port and a first secondary end, said first circuit being configured to phase shift said first secondary signal by a first phase delay;
- a second circuit having a second primary end coupled to said primary port and a second secondary end, said second circuit being configured to phase shift said second secondary signal of said primary signal by substantially said first phase delay, and said second circuit being symmetrical relative to said first circuit;
- a third circuit having a third primary end coupled to said primary port and a third secondary end, said third circuit being configured to phase shift said third secondary signal of said primary signal by a second phase delay, said second phase delay being unequal to said first phase delay;
- wherein said first circuit comprises:
- a first capacitor coupled to said first primary end and having a first terminal end, said first capacitor exhibiting a first capacitance;
- a first port coupled to said first terminal end;
- a first inductor element coupled between said first terminal end and said first secondary end, said first inductor element exhibiting an inductance;
- and
- a second capacitor coupled between said first secondary end and said third secondary end, said second capacitor exhibiting a second capacitance.
7 more elements
A three-way phase shifting power splitter for dividing a primary signal into first, second, and third secondary signals, each of said secondary signals being input into a multi-stage power amplifier;
- said power splitter comprising:
- a primary port for receiving said primary signal, said primary signal exhibiting a primary phase and a primary amplitude;
- a first circuit having a first primary end coupled to said primary port for receiving said first secondary signal, said first secondary signal exhibiting an amplitude that is approximately one third of said primary amplitude, and said first circuit being configured to cause said first secondary signal to be in-phase with said primary phase;
- a first secondary port coupled to said first circuit for providing said first secondary signal;
- a second circuit having a second primary end coupled to said primary port for receiving said second secondary signal, said second secondary signal exhibiting substantially said amplitude, and said second circuit being configured to cause said second secondary signal to be in-phase with said primary phase;
- a second secondary port coupled to said second circuit for providing said second secondary signal;
- a third circuit having a third primary end coupled to said primary port for receiving said third secondary signal, said third secondary signal exhibiting substantially said amplitude, and said third circuit being configured to cause said third secondary signal to lag a quarter-wavelength from said primary phase;
- and
- a third secondary port coupled to said third circuit for providing said third secondary signal;
- wherein
- said first secondary signal is input into a first carrier amplifier network of said multi-stage power amplifier;
- said second secondary signal is input into a second carrier amplifier network of said multi-stage power amplifier;
- and
- said third secondary signal is input into a peaking amplifier network of said multi-stage power amplifier.
11 more elements
Dependencies are inferred from the claim text.