FILTER TO SUPPRESS HARMONICS FOR AN ANTENNA
First Claim
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1. A hearing assistance device, comprising:
- a wireless radio frequency (RF) transceiver;
an antenna; and
a balanced low pass filter connected between the RF transceiver and the antenna, the filter configured to suppress harmonics for the antenna and configured to prevent inversion of impedance presented to the RF transceiver from the antenna.
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Accused Products
Abstract
Disclosed herein, among other things, are systems and methods for filtering to suppress harmonics for a hearing assistance device antenna. One aspect of the present subject matter includes a hearing assistance system for a wearer including a wireless radio frequency (RF) transceiver, an antenna and a filter connected between the RF transceiver and the antenna. According to various embodiments, the filter is configured to suppress harmonics for the antenna, and configured to maintain impedance and prevent inversion of impedance presented to the RF transceiver from the antenna.
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Citations
20 Claims
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1. A hearing assistance device, comprising:
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a wireless radio frequency (RF) transceiver; an antenna; and a balanced low pass filter connected between the RF transceiver and the antenna, the filter configured to suppress harmonics for the antenna and configured to prevent inversion of impedance presented to the RF transceiver from the antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method, comprising:
providing a balanced low pass filter connected between an RF transceiver and an antenna of a hearing assistance device, the filter configured to suppress harmonics for the antenna and configured to prevent inversion of impedance presented to the RF transceiver from the antenna. - View Dependent Claims (16, 17, 18, 19, 20)
Specification