Same-band combiner using dual-bandpass channel filters
View Patent ↗Various embodiments relate to an apparatus and related method for transmission and reception of a plurality of a carrier signals comprising one or more dual-band channels through a same-band combiner. A device such as a base station may include a same-band combiner that comprises a plurality of dual-bandpass filters and a combining element to transmit and receive the carrier signal. Each of the dual-bandpass filters may transmit and receive a channel, with each dual-bandpass filter including separate reception and transmission passbands for the separate frequencies in the dual-band channel. The combining element may separate and combine the one or more dual-band channels, with each of the dual-bandpass filters connected in parallel processing separate dual-band channels.
1. A wireless base station comprising:
a same-band combiner configured to receive and transmit a plurality of dual-band channels comprising:
an antenna configured to transmit and receive the plurality of dual-band channels;
a plurality of dual-bandpass filters, each dual-bandpass filter associated with a reception passband and a transmission passband separated by a defined guard band, wherein each of the plurality of dual-bandpass filters comprises a dual-mode resonator; and
a combining element connected to the antenna and the plurality of dual-bandpass filters that is configured to combine the plurality of dual-band channels associated with the plurality of dual-bandpass filters to produce a combined carrier signal, wherein the combining element comprises a resonator that connects the plurality of dual-bandpass filters in parallel.
2. The apparatus of claim 1 , wherein the reception passbands and the transmission passbands of the plurality of dual-bandpass filters are each separated by at least 3 kHz.
3. The apparatus of claim 1 , wherein the defined guard band is at least 30 kHz.
4. The apparatus of claim 1 , wherein the plurality of dual-bandpass filters comprises:
at least two dual-bandpass filters connected in parallel.
5. The apparatus of claim 1 , wherein each of the plurality of dual-band channels is configured to communicate with a distinct provider.
6. The apparatus of claim 1 , wherein widths of the reception passbands are substantially different from each other.
7. The apparatus of claim 1 , wherein at least one of the plurality of dual-bandpass filters is rated to handle a power above 100 W.
8. The apparatus of claim 1 , wherein widths of the reception passbands are substantially different from widths of the transmission passbands.
9. A method comprising:
receiving, by an antenna in a same-band combiner in a wireless base station, a receive carrier signal comprising a plurality of dual-band channels;
receiving, by a plurality of dual-bandpass filters, wherein each of the plurality of dual-bandpass filters comprises a dual-mode resonator, through a combining element connected to the antenna, the receive carrier signal, wherein each of the dual-bandpass filters is associated with a reception passband and a transmission passband separated by a defined guard band, wherein the combining element comprises a resonator that connects the plurality of dual-bandpass filters in parallel;
receiving, by a plurality of components in the wireless base station, a plurality of filtered receive signals from the plurality of dual-bandpass filters;
transmitting, by the plurality of components in the wireless base station, a plurality of transmit signals to the plurality of dual-bandpass filters;
transmitting, by the plurality of dual-bandpass filters through the combining element, a plurality of filtered transmit-band signals; and
transmitting, through the antenna, a transmit carrier signal comprising the plurality of filtered transmit-band signals received by the combining element.
10. The method of claim 9 , wherein each of the plurality of dual-band channels is configured to communicate with a distinct provider.
11. The method of claim 9 , wherein widths of each of the reception passbands are substantially different from each other.
12. The method of claim 9 , wherein widths of the reception passbands are substantially different from widths of the transmission passbands.
13. The method of claim 9 , wherein the reception passbands and the transmission passbands of the plurality of dual-bandpass filters are each separated by at least 3 kHz.
14. The method of claim 9 , wherein the defined guard band is at least 30 kHz.
15. The method of claim 9 , wherein the plurality of dual-bandpass filters comprises at least two dual-bandpass filters connected in parallel.
16. The method of claim 9 , wherein at least one of the plurality of dual-bandpass filters is rated to handle a power above 100 W.