Tunable duplexer architecture
First Claim
1. A tunable radio frequency (RF) duplexer comprising:
- a first hybrid coupler operable to split an RF transmission input signal into a first RF quadrature hybrid transmission signal (QHTS) and a second RF QHTS;
a second hybrid coupler operable to split an RF receive input signal into a first RF quadrature hybrid receive signal (QHRS) and a second RF QHRS;
an RF filter circuit operable to pass the first RF QHTS and the second RF QHTS to the second hybrid coupler and to reflect the first RF QHRS and the second RF QHRS back to the second hybrid coupler; and
wherein the second hybrid coupler is configured to combine the first RF QHTS and the second RF QHTS into an RF transmission output signal and to combine the first RF QHRS and the second RF QHRS into an RF receive output signal.
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Accused Products
Abstract
A tunable radio frequency (RF) duplexer and duplexing methods are disclosed. The tunable RF duplexer includes a first hybrid coupler, a second hybrid coupler, and an RF filter circuit. The first hybrid coupler is operable to split the RF transmission input signal into first and second RF quadrature hybrid transmission signals (QHTSs). The second hybrid coupler is operable to split the RF receive input signal into first and second RF quadrature hybrid receive signals (QHRSs). The RF filter circuit is operable to pass the first and second RF QHTSs to the second hybrid coupler and to reflect the first and second RF QHRSs back to the second hybrid coupler. Additionally, the second hybrid coupler is configured to combine the first and second RF QHTSs into an RF transmission output signal and to combine the first and second RF QHRSs into an RF receive output signal.
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Citations
25 Claims
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1. A tunable radio frequency (RF) duplexer comprising:
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a first hybrid coupler operable to split an RF transmission input signal into a first RF quadrature hybrid transmission signal (QHTS) and a second RF QHTS; a second hybrid coupler operable to split an RF receive input signal into a first RF quadrature hybrid receive signal (QHRS) and a second RF QHRS; an RF filter circuit operable to pass the first RF QHTS and the second RF QHTS to the second hybrid coupler and to reflect the first RF QHRS and the second RF QHRS back to the second hybrid coupler; and wherein the second hybrid coupler is configured to combine the first RF QHTS and the second RF QHTS into an RF transmission output signal and to combine the first RF QHRS and the second RF QHRS into an RF receive output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of providing RF duplexing, comprising:
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splitting an RF transmission input signal into a first RF quadrature hybrid transmission signal (QHTS) and a second RF QHTS; splitting an RF receive input signal into a first RF quadrature hybrid receive signal (QHRS) and a second RF QHRS; filtering the first RF QHTS and the second RF QHTS to pass the first RF QHTS and the second RF QHTS within a passband; filtering the first RF QHRS and the second RF QHRS to reflect the first RF QHRS and the second RF QHTS within a stopband; combining the first RF QHTS and the second RF QHTS within the passband into an RF transmission output signal; and combining the first RF QHRS and the second RF QHRS within the stopband into an RF receive output signal. - View Dependent Claims (24, 25)
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Specification