ANTENNA INTERFACE UNIT
First Claim
Patent Images
1. An antenna interface unit, comprising:
- a multi-band antenna for communicating a plurality of communication bands;
a band pass filter for separating at least one band from the plurality of communication bands;
an antenna matching circuit connected between the multi-band antenna and the band pass filter, comprising;
a first connection point connected to the multi-band antenna;
a first inductor connected between the first connection point and a ground;
a second inductor connected to the first connection point and a second connection point;
a first capacitor connected between the second connection point and the ground;
a second capacitor connected between the second connection point and the band pass filter;
wherein at least one of the first inductor, the second inductor, the first capacitor and the second capacitor is a first tunable ferroelectric (FE) component comprising;
an FE material; and
a control signal source electrically connected to the FE material for transmitting a control signal to the FE material to adjust one of a capacitance and an inductance of the first tunable FE component.
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Abstract
A ferro-electric (FE) tunable antenna matching circuit is provided for a multi-band antenna. The tunable matching circuit is integrated with a diplexer on one substrate. The tunable matching circuit has a first and second inductor coupled to the antenna. The second inductor is couple to a first capacitor and a second capacitor. One side of the second capacitor forms an input/output port for connection to a duplexer. One or more of the matching circuit elements is a ferro-electric (FE) tunable component.
56 Citations
19 Claims
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1. An antenna interface unit, comprising:
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a multi-band antenna for communicating a plurality of communication bands;
a band pass filter for separating at least one band from the plurality of communication bands;
an antenna matching circuit connected between the multi-band antenna and the band pass filter, comprising;
a first connection point connected to the multi-band antenna;
a first inductor connected between the first connection point and a ground;
a second inductor connected to the first connection point and a second connection point;
a first capacitor connected between the second connection point and the ground;
a second capacitor connected between the second connection point and the band pass filter;
wherein at least one of the first inductor, the second inductor, the first capacitor and the second capacitor is a first tunable ferroelectric (FE) component comprising;
an FE material; and
a control signal source electrically connected to the FE material for transmitting a control signal to the FE material to adjust one of a capacitance and an inductance of the first tunable FE component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An antenna interface unit, comprising:
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a multi-band antenna for communicating a plurality of communication bands;
a diplexer for separating at least one band from the plurality of communication bands, the diplexer deposited on a substrate;
an antenna matching circuit deposited on the substrate and connected between the multi-band antenna and the diplexer, the antenna matching circuit for matching an impedance of the antenna with a natural input impedance of the diplexer, the antenna matching circuit comprising;
a first connection point connected to the multi-band antenna;
a first inductor connected between the first connection point and a ground;
a second inductor connected to the first connection point and a second connection point;
a first capacitor connected between the second connection point and the ground;
a second capacitor connected between the second connection point and the diplexer;
wherein at least one of the first inductor, the second inductor, the first capacitor and the second capacitor is a first tunable ferroelectric (FE) component comprising;
an FE material; and
a control signal source electrically connected to the FE material for transmitting a control signal to the FE material to adjust one of a capacitance and an inductance of the first tunable FE component. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification