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;
split an RF receive input signal into a first RF quadrature hybrid receive signal (QHRS) and a second RF QHRS; and
combine the first RF QHTS and the second RF QHTS into an RF transmission output signal when reflected back to the first hybrid coupler;
a second hybrid coupler configured to combine the first RF QHRS and the second RF QHRS into an RF receive output signal; and
an RF filter circuit that is tunable so as to pass the first RF QHRS and the second RF QHRS to the second hybrid coupler and to reflect the first RF QHTS and the second RF QHTS back to the first hybrid coupler.
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Accused Products
Abstract
A tunable radio frequency (RF) duplexer is 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 an RF receive input signal into first and second RF quadrature hybrid receive signals (QHRSs). The first hybrid coupler is also operable to split an RF transmission input signal into first and second RF quadrature hybrid transmission signals (QHTSs). The RF filter circuit is operable to pass the first and second RF QHRSs to the second hybrid coupler and to reflect the first and second RF QHTSs back to the first hybrid coupler. Additionally, the second hybrid coupler is configured to combine the first and second RF QHRSs into an RF receive output signal, while the first hybrid coupler is configured to combine the first and second RF QHTSs into an RF transmission output signal.
45 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; split an RF receive input signal into a first RF quadrature hybrid receive signal (QHRS) and a second RF QHRS; and combine the first RF QHTS and the second RF QHTS into an RF transmission output signal when reflected back to the first hybrid coupler; a second hybrid coupler configured to combine the first RF QHRS and the second RF QHRS into an RF receive output signal; and an RF filter circuit that is tunable so as to pass the first RF QHRS and the second RF QHRS to the second hybrid coupler and to reflect the first RF QHTS and the second RF QHTS back to the first hybrid coupler. - 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 radio frequency (RF) duplexing comprising:
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splitting an RF receive input signal into a first RF quadrature hybrid receive signal (QHRS) and a second RF QHRS; splitting an RF transmission input signal into a first RF quadrature hybrid transmission signal (QHTS) and a second RF QHTS; filtering the first RF QHRS and the second RF QHRS to pass the first RF QHRS and the second RF QHRS within a passband; filtering the first RF QHTS and the second RF QHTS to reflect the first RF QHTS and the second RF QHRS within a stopband; combining the first RF QHRS and the second RF QHRS within the passband into an RF receive output signal; and combining the first RF QHTS and the second RF QHTS within the stopband into an RF transmission output signal. - View Dependent Claims (24, 25)
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Specification